®
Gears
A
IP
T
S
H
M E DA
Y
S
Couplings
Universal Joints
Shaft Collars
Washers
Bushings
Pulleys
Timing Belts
ME
N
d
e
e
t
n
a
r
a
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t
n
e
m
p
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We Never Miss!
Our Guarantee –
Boston Gear will ship any in stock product the same day
it’s ordered, with no additional charge, up to 8p.m. EST.
WE NEVER MISS…but if we do, we’ll pay the freight!
Call your local Boston Gear distributor
and request your
“GUARANTEED SAME DAY SHIPMENT”
order today!
For the name and number of your
nearest distributor, please call
A
M E DA
Y
S
1-800-225-5280
In Canada: 1-800-221-5079
Please see page 157 for the terms and conditions
of this program.
IP
T
S
H
M
EN
UPC INDUSTRIAL CODE NUMBER — 781711
Bost
TM
TM
.DWG FILES
FOR DESIGN
®
A U T H O R I Z E D D ATA P R O V I D E R
TABLE OF CONTENTS
Table of Contents ....................................................................................................................................... 1
Product Selection and Reference Guide............................................................................................ 2 – 3
Shaft Accessories Selection Reference Guide ..................................................................................... 3A
Product Descriptions ...................................................................................................................... 3B – 3E
The Boston Gear Story ................................................................................................................... 4A – 4B
SPUR GEARS ...................................................................................................................................... 5 – 50
Section Contents ............................................................................................................................... 5
Pinions and Gears ....................................................................................................... 6 – 15, 25 – 34
Change Gears........................................................................................................................... 16 – 20
Stem Pinions .................................................................................................................................... 21
Drawn Pinion Wire ........................................................................................................................... 22
Rack .......................................................................................................................................... 23 & 35
Internals.................................................................................................................................... 24 & 36
Gear Gauge Sets .............................................................................................................................. 50
Stock Altered and Custom Spur Gears ................................................................................. 87 – 89
HELICAL GEARS .............................................................................................................................. 51 – 56
Section Contents ............................................................................................................................. 51
Helical Gears ............................................................................................................................ 52 – 53
Stock Altered and Custom Helical Gears.............................................................................. 87 – 89
MITER AND BEVEL GEARS............................................................................................................. 57 – 71
Section Contents ............................................................................................................................. 57
Miter Gears ............................................................................................................................... 58 – 61
Bevel Gears .............................................................................................................................. 62 – 66
Stock Altered and Custom Miter & Bevel Gears................................................................... 87 – 89
WORMS AND WORM GEARS.......................................................................................................... 73 – 86
Section Contents ............................................................................................................................. 73
Worms and Worm Gears......................................................................................................... 74 – 86
Stock Altered and Custom Worm and Worm Gears ............................................................ 87 – 89
SHAFT ACCESSORIES .................................................................................................................. 90 – 135
Couplings ............................................................................................................................... 90 – 101
Universal Joints ................................................................................................................... 102 – 109
Shaft Collars, Set Screw and Clamping ............................................................................ 110 – 116
Washers and Bushings ....................................................................................................... 117 – 119
Pulleys, Round Belt ....................................................................................................................... 120
Miniature Timing Belt & Pulley Selection.......................................................................... 121 – 135
ENGINEERING INFORMATION.................................................................................................... 136 – 156
Terms and Conditions......................................................................................................... 157 – 158
Index to Catalog Numbers .................................................................................................. 159 – 161
Gear Catalog
1
Gear Selection
Stock Gears
Description
Spur
Gears
Miter
and
Bevel
Gears
Worms
and
Worm
Gears
2
Gear Catalog
Pressure
Angle (PA)
Material
Pinions
and
Gears
Parallel
Shafts
14-1/2°
20°
14-1/2°
20°
Brass
Brass
Steel
Delrin
Pinions
and
Gears
Parallel
Shafts
14-1/2°
14-1/2°
20°
Non-Metallic
Steel, Iron
Steel, Iron
Change
Gears
Parallel
Shafts
14-1/2°
Steel, Iron
Stem
Pinions
Parallel
Shafts
14-1/2°
Steel
Drawn
Pinion
Wire
Parallel
Shafts
14-1/2°
Brass
Steel
Use with
Spur Gears
14-1/2°
14-1/2°
14-1/2°
20°
20°
Nylon
Brass
Steel
Brass
Steel
Internal
Gears
Parallel
Shafts
14-1/2°
20°
Brass
Brass
Helical
Gears
Parallel
and 90°
Non-Intersecting
Shafts
14-1/2°
Steel
Bronze
Straight
Miter
Gears
90°
Intersecting
Shafts
20°
Nylon
Brass
Steel
Iron
Spiral
Miter
Gears
90°
Intersecting
Shafts
20°
Steel
Straight
Bevel
Gears
90°
Intersecting
Shafts
20°
Brass
Steel
Iron
Spiral
Bevel
Gears
90°
Intersecting
Shafts
20°
Steel
Rack
Helical
Gears
Application
Worm
Gear
Single
Acetal
Nylon
Acetal
Minlon
Bronze
14-1/2°
20°
25°
Single
Double
Quad
Steel
Bronze
14-1/2°
20°
25°
Single
Double
Quad
Steel
Iron
(PA)
Worms/
Worm Gears
90°
Non-Intersecting
Shafts
14-1/2°
Worms/
Worm Gears
90°
Non-Intersecting
Shafts
Worms/
Worm Gears
90°
Non-Intersecting
Shafts
Thread
Reference Guide
Gear Catalog Reference Pages
Horsepower
Catalog
Selection
and Torque
Number
Procedure
Ratings
Selection
Diametrical
Pitch
Pitch
Diameter
Face Width
48DP – 16DP
64DP – 24DP
32DP – 24DP
48DP – 24DP
.208" – 5.000"
.250" – 6.000"
.500" – 6.000"
.375" – 2.500"
.062" – .313"
.125" – .250"
.187" – .250"
.125" – .250"
37
37
37
37
38 – 40
–
38
–
6–9
25 – 30
7–8
25 – 30
16DP – 8DP
20DP – 3DP
20DP – 5DP
1.000" – 3.500"
.750" – 36.000"
.600" – 36.000"
.500" – 1.250"
.500" – 3.000"
.500" – 2.500"
37
37
37
40 – 43
39 – 45
46 – 50
10 – 12
8 – 15
30 – 34
20DP – 8DP
1.000" – 12.500"
.375" – 1.250"
37
39 – 43
16 – 20
20DP – 6DP
.287" – 1.750"
1.125" – 3.000"
37
39 – 44
21
48DP – 24DP
48DP – 24DP
.125" – .667"
.125" – .667"
48" Lengths
48" Lengths
37
37
38
38
22
22
48DP – 24DP
48DP – 16DP
48DP – 3DP
64DP – 24DP
20DP – 4DP
.104" – .208"
.104" – .438"
.104" – 1.167"
.109" – .208"
.450" – 1.750"
.125" – .250"
.125" – .312"
.125" – 3.000"
.125" – .250"
.500" – 3.500"
37
37
37
37
37
38
38 – 40
38 – 45
–
46 – 50
23
23
23
35
35
48DP – 16DP
64DP – 24DP
1.000" – 6.000"
1.000" – 6.000"
.125" – .312"
.125" – .250"
37
37
38
–
24
36
24TDP – 6TDP
8TDP – 6TDP
.333" – 6.000"
1.000" – 6.000"
.250" – 1.250"
.750" – 1.250"
54
54
55 – 56
56
52 – 53
53
48DP – 16DP
48DP – 24DP
48DP – 4DP
8DP – 4DP
.312" – 2.000"
.312" – 1.500"
.375" – 7.000"
3.500" – 8.000"
.070" – .390"
.080" – .230"
.080" – 1.430"
.750" – 1.333"
67
67
67
67
68
68
68 – 69
68 – 69
58 – 59
58
58 – 60
60
18DP – 5DP
1.000" – 5.000"
.220" – 1.150"
67
71
61
48DP – 24DP
20DP – 6DP
16DP – 4DP
.250" – 2.000"
.500" – 6.000"
1.000" – 9.000"
.090" – .260"
.180" – 1.070"
.420" – 1.400"
67
67
67
70
70
70
62
62 – 65
63 – 65
30DP – 8DP
.430" – 4.250"
.140" –.710"
67
71
66
84
–
74 – 76
Worm
Gear
Worm
Gear
.333"
to
1.500"
.417"
to
4.167"
.562"
to
.812"
.156"
to
.219"
48DP – 4DP
.333"
to
3.000"
.417"
to
6.000"
.562"
to
5.250"
.156"
to
1.500"
84
85 – 86
74 – 82
16DP – 3DP
.625"
to
4.000"
1.250"
to
18.000"
1.000"
to
5.250"
.312"
to
2.000"
84
85 – 86
77 – 83
48DP – 32DP
24DP – 32DP
48DP – 24DP
Gear Catalog
Tooth Gauge
3
SHAFT ACCESSORIES SELECTION/REFERENCE GUIDE
COUPLINGS
INSERT (3 JAW)
SPIDER RING
SHEAR
FC Type – Pg. 91–92
BF Type – Pg. 93
CLAMP
MULTI-JAW
BG Type – Pg. 94 SCC Type – Pg. 95 FA Type – Pg. 96
RIGID
SLEEVE
COMPLETE COUPLING
HALF COUPLING
CR Type – Page 96
FCP Type – Page 97
GC Type – Page 98
GH Type – Page 98
PIN & BLOCK
FORGED
MOLDED
MOLDED WITH
SLIDE EXTENSION
UNIVERSAL
JOINTS
J Type – Pages 103 – 104 UJN Type – Pages 105 – 107 JP Type – Page 108 JPE Type – Page 109
COLLARS
SETSCREW
WASHDOWN DUTY
CLAMPING-THREADED
SC Type – Page 111
NSC Type – Page 112
CSC Type – Page 113
CLAMPING – 1 PIECE
CLAMPING – 2 PIECE
WASHDOWN DUTY
CS Type – Page 114
2SC Type – Page 115
2NSC Type – Page 116
HARDENED STEEL WASHERS
WASHERS
SOFT STEEL BUSHINGS
BUSHINGS
Page 118
Page 119
GROOVED
PULLEYS
Pages 125 & 131
Pages 126 – 130
& 132 – 135
MINIATURE
TIMING BELTS
& PULLEYS
PULLEYS
Page 120
3A
TIMING BELTS
Gear Catalog
SPUR GEARS
■
■
■
■
■
Parallel Shaft Applications
Reliability from Steel, Cast Iron
and Brass
More Cost Effective, Quieter Running and
Corrosion-Resistant Operation from NonMetallic Options
Higher Load Carrying Capacity with
20° PA (Pressure Angle)
Higher Contact Ratio for a Smoother,
Quieter Operation with
14-1/2° PA
Selections From Stock
• Pinions and Gears (Steel, Cast
Iron, Brass, Non-Metallic)
• Change Gears (Steel or Cast Iron)
• Stem Pinions (Steel)
• Drawn Pinion Wire (Brass, Steel)
• Rack (Brass, Steel, Nylon)
• Internal (Brass)
• Diametral Pitch 64 DP to 3 DP
• Pitch Diameter .208" to 36.000"
• Diametral Pitch System
Standardized on Stock Gears
• 14-1/2° and 20° Pressure Angles
Boston spur gears are designed to transmit motion and power between
parallel shafts. Configurations include spur, rack, pinion wire, stem pinions and internal gears; most with a selection of bores, keyways and set
screws. Fine-pitch gears are available in plastic, brass, stainless steel and
steel. Heavier pitch spurs are available in steel and cast iron. Styles
include plain, web, web with lightening holes or spoked. Change gears
have consecutive numbers of teeth for a variety of ratios.
Boston Gear manufactures both 14-1/2° and 20°PA, involute, full depth
system gears. While 20°PA is generally recognized as having higher load
carrying capacity, 14-1/2°PA gears have extensive use. The lower pressure
angle results in less change in backlash due to center distance variation
and concentricity errors. It also provides a higher contact ratio and consequent smoother, quieter operation provided that the undercut of the teeth
is not present.
Gear Catalog
3B
THE COMPLETE SOURCE FOR OPEN GEARS . . .
HELICAL GEARS
■
■
■
■
■
Parallel and 90° Non-Intersecting Shaft
Applications
Improved Tooth Strength
Greater Load Carrying Capacity
Increased Contact Ratio
Smoother Operating Characteristics
Selections From Stock
• Helicals, 45° Helix Angle
• Transverse Diametral Pitch (TDP)
System
• Hardened Steel (24 TDP – 6 TDP)
• Bronze (8 TDP – 6 TDP)
• Pitch Diameter .333" to 6.000"
• 14-1/2° Pressure Angle
Boston helical gears are stocked both right and left hand, made with a 45°
helix angle. They are designed to transmit motion and power between nonintersecting shafts which are positioned either parallel (opposing hand) or
at 90° to each other (same hand). Because these gears are top-hobbed, there
is extremely close concentricity between the pitch diameter and the outside
diameter.
Helical gears offer additional benefits relative to Spur Gears, those being:
– Improved tooth strength due to the elongated helical wrap-around.
– Increased contact ratio due to the axial tooth overlap.
– Helical Gears tend to have greater load carrying capacity than Spur Gears
of similar size.
– Because of the above, smoother operating characteristics are apparent.
All Boston Helicals are cut to the Transverse Diametral Pitch System, resulting
in a higher Normal Diametral Pitch Number.
3C
Gear Catalog
IS YOUR BEST SOURCE . . .
MITER AND BEVEL GEARS
■
■
■
■
■
■
90° Intersecting Shaft Applications
Coniflex® Tooth Form for Increased Life and
Smoother, Quieter Operation
Spiral Miter and Bevel for Higher Speed, Greater
Torque Load, and Quieter Operating Applications
Miter Gears for 1:1 Ratio Applications
Bevel Gears for 1.5:1 to 6:1 Ratio Applications
Soft Bores for Customized Alterations
Selections from Stock
• Straight Miter Gears
– Nylon (48 DP – 16 DP)
– Brass (48 DP – 24 DP)
– Steel (48 DP – 4 DP)
– Iron (8 DP – 4 DP)
• Spiral Miter Gears (35° Spiral Angle)
– Steel (18 DP – 5 DP)
• Straight Bevel Gears
– Brass (48 DP – 24 DP)
– Steel (20 DP – 6 DP)
– Iron (16 DP – 4 DP)
• Spiral Bevel Gears (35° Spiral Angle)
– Steel (30 DP – 8 DP)
• Diametral Pitch – 48 DP to 4 DP
• Pitch Diameter – 0.250" to 9.000"
• 20° Pressure Angle
• Hardened or Unhardened Teeth (Steel)
• Made in Accordance with AGMA
Specifications for the Basic Tooth Form
Boston miter and bevel gears are designed for transmission of motion and
power between intersecting shafts positioned at a right angle. Straight tooth
miter and bevel gears are cut with a generated tooth form having a localized
lengthwise tooth bearing known as the “Coniflex”® tooth form. The superiority
of these gears over straight bevels with full length tooth bearing lies in the control of tooth contact. The localization of contact permits minor adjustment of
the gears in assembly and allows for some displacement due to deflection
under operating loads, without concentration of the load on the end of the
tooth. This results in increased life and quieter operation.
Spiral tooth form miter and bevel gears are suited for higher speed and larger
torque applications.
®Registered
trademark of The Gleason Works.
Gear Catalog
3D
WORMS AND WORM GEARS
■
■
■
■
■
■
90° Non-Intersecting Shaft Applications
Smoothest, Quietest Form of Gearing
High Ratio Speed Reduction
Minimal Space Requirements
Resistance to Back Driving with
Some Ratios
Increased Efficiency with Lower Ratios
Selections from Stock
• Worms
– Acetal (48 DP – 24 DP)
– Steel (48 DP – 3 DP)
• Worm Gears
– Acetal (48 DP – 24 DP)
– Bronze (48 DP – 4 DP)
– Cast Iron (16 DP – 3 DP)
• Pressure Angle
– 14-1/2°, 20°, 25°
• Thread
– Single, Double, Quadruple
• Diametral Pitch – 48 DP to 3 DP
• Center Distances – 0.375" to 11.000"
Boston Gear worms and worm gears provide an effective answer for such
power transmission applications as high-ratio speed reduction, limited space,
right-angle shafts and non-intersecting shafts. When properly applied, they are
the smoothest and quietest form of gearing. Steel worms and cast iron or
bronze worm gears having throated teeth are available in single or multiple
threads, 48 to 3 diametral pitch or up to 85" pitch diameter. Acetal worms
and worm gears are available in 48, 32 and 24 diametral pitches.
The efficiency of a worm gear drive depends on the lead angle and number of
starts on the worm. The angle generally decreases with increasing ratio and
worm pitch diameter. For increased efficiency the ratio should be kept low.
3E
Gear Catalog
The Boston Gear Story
21st Century Innovation
Built on Our Second
Century of Quality, Service,
Value, and Performance
In addition, Boston Gear provides the widest
range of integrated motion control products
from one source.
Started in 1877 as a machine shop making
gear cutting machines, Boston Gear has led
the growth of the power transmission industry
for more than a century. In its early years,
Boston Gear introduced the concepts of gear
standardization and stock gears—innovations
of enormous benefit to power transmission
system designers, specifiers and users.
Engineering Services
The Boston Gear Engineering Group can satisfy your technical needs through skillful
application of standard products or development of custom designs. Creating specials if
we are unable to satisfy your needs from our
stock catalog items or stock altered items is
an important aspect of customer service.
Support is provided by R&D personnel who
use microprocessor-controlled equipment to
collect and monitor data on materials and
product performance. In-house heat treating
facilities enable us to harden gear teeth while
maintaining a soft bore for future correct sizing as determined by the specific application.
The convenience of this single-source capability is yours when you buy Boston Gear.
Manufacturing Excellence
Today, Boston Gear manufactures open gearing in our modern state-of-the-art manufacturing facility in Charlotte, North Carolina.
We continue to improve product quality and
manufacturing efficiencies with implementation
of programs including Gear Cell Manufacturing,
CAD/CAM Design and Manufacturing, CNC/DNC
Programming, and Computer Aided Production
and Inventory Control.
Boston Gear manufactures more than
20,000 products in-house at facilities in
Louisburg and Charlotte, North Carolina;
Florence, Kentucky; and York, Pennsylvania.
We utilize cell technology, efficient plant and
work center layouts, and operator teams.
This approach optimizes production flow,
encourages a sense of responsibility and
pride of workmanship, and enables consistently high-quality output.
Computerized production control provides
close supervision over scheduling and
resource planning, allowing the flexibility
to fit your requirements smoothly into the
master schedule. Other dedicated computer
controls within the production department
govern the ordering and delivery functions
to keep operations lean and efficient.
Computer-Aided-Design (CAD) systems help
Boston Gear engineers create new approaches to broad industrial challenges or specific
customer needs. Computer simulation and
testing at critical stages ensure that their
designs are practical.
Via our participation in
BostSpec® by Autodesk,
Boston Gear offers over Bost
80,000 product drawings digitized in industry
standard AutoCAD .DWG
and .DXF format. This CD-ROM provides
seamless interface with current versions of
AutoCAD, AutoCAD LT, and other CAD programs saving hours of valuable computer
drawing, selection and engineering specification time.
TM
TM
.DWG FILES
FOR DESIGN
®
A U T H O R I Z E D D ATA P R O V I D E R
Gear Catalog
4A
Customer Service
Stock Product Alterations
Service is our first priority at Boston Gear.
We provide service and support through a
network of the finest authorized distributors
backed by Boston Gear field sales and customer service inside sales personnel.
Boston Gear provides customization services
for open gears and rack with 24-hour turnaround. Our machine shop operations in our
Florence facility for product rework and
modification include:
•
•
•
•
•
•
Quality Assurance
Our Quality Policy
That the people
of Boston Gear
will provide all
products and services
at a quality level
that meets or exceeds
the expectations
and the requirements
of our customers.
National Service Centers and distributors
are linked by a sophisticated computer communication system which provides product
availability, and product customization to
meet your motion control needs.
You get up-to-the-minute information on
product availability, order entry, delivery
dates and prices. You’ll save time and
be assured that your order is filled and
on its way.
Boston Gear products are subject to an inhouse Total Quality Awareness System to
ensure that quality requirements are met
while productivity is improved. The objective:
make the product correctly the first time – all
the time. In operation, our people audit production processes, isolate problem causes,
then implement corrective action to maintain
and improve quality throughout the production run. Our Quality Policy is your assurance
that Total Quality Awareness is working.
Boston Gear utilizes our Florence, Kentucky
Central Distribution Center to inventory and
ship all catalog products. This facility is
supplemented by satellite warehouses in
Norwalk, California; Mississauga, Ontario;
and Mexico City, Mexico. In keeping with our
intent to be the most responsive supplier in
the power transmission industry, Boston Gear
will ship any in stock product the same day
it’s ordered, up to 8p.m. EST.
4B
Gear Catalog
Q
PROUDLY
MADE IN THE
UA
LIT Y
USA
– VA LU E – T R A D
• FACE WIDTH REDUCED
• HUB PROJECTION REDUCED
• HUB DIAMETER REDUCED
• BORES ENLARGED
• KEYWAY(S) ADDED
• TAPPED HOLES ADDED
FOR SET SCREWS
Keyways and bores available in
common metric sizes.
Why It Pays To Buy
Boston Gear
With over a century of experience, Boston
Gear has built an unmatched store of knowledge and expertise in the design, manufacture and improvement of power transmission
products. This unique capability has been
made more accessible and cost-effective
with the thoughtful application of the latest
in state-of-the-art computer technology.
Choose from a vast array of stock products
described in the Boston Gear Product
Catalogs, or work with Boston Gear engineers
to find an economical solution to your special
requirements. Either way, you’re assured of
efficient, on-time order fulfillment to meet
your productivity demands.
â
Stock Availability
Reduce faces and OD’s
Rebore, shorten or remove hubs
Add keyways and set screws
Machine to special tolerances
Drill and tap
Stamp parts with customer’s P/N
ITI O
N
INDUSTRI L
DISTRIBU ORS
For the best in quality, service, value and performance, it pays to buy Boston Gear – The
Market Leader and Innovator in Selected
Motion Control Products and Information
Related Services!
SPUR GEARS
SECTION CONTENTS
14-1/2° PRESSURE ANGLE – CATALOG NUMBER / DIMENSIONS
Spur Gears................................................................................................................................. 6 – 15
Change Gears........................................................................................................................... 16 – 20
Stem Pinions .................................................................................................................................... 21
Drawn Pinion Wire ........................................................................................................................... 22
Rack................................................................................................................................................... 23
Internals ............................................................................................................................................ 24
20° PRESSURE ANGLE – CATALOG NUMBER / DIMENSIONS
Spur Gears................................................................................................................................ 25 – 34
Rack................................................................................................................................................... 35
Internals ............................................................................................................................................ 36
Selection Procedure ................................................................................................................................. 37
Horsepower & Torque Ratings........................................................................................................ 38 – 50
Gear Gauges ............................................................................................................................................. 50
Stock Altered/Custom Spur Gears.................................................................................................. 87 – 89
Spur Gear Engineering Information ........................................................................................... 137 – 142
Gear Catalog
5
SPUR GEARS
141/2° PRESSURE ANGLE
48 AND 32 DIAMETRAL PITCH
BRASS
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
Proj.
DIAMETRAL PITCH
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
.208
.250
.292
.312
.333
.375
.417
.458
.500
.542
.667
.750
.833
.917
1.000
1.125
1.250
1.375
1.500
1.750
2.000
2.083
2.500
3.000
4.000
.0935
–
BRASS
–
.125
–
–
.1875
–
–
.250
.50
.25
.3125
.62
.31
32
STANDARD TOLERANCES
48 D.P.
TOLERANCE
±.0005
±1/32
32 D.P.
A
D
G127
G129
G130
G131
G132
G133
G134
G135
G136
G137
G138
G139
G140
G141
G142
G143
G144
G145
G146
G147
G148
G154
G149
G150
G151
09322
09324
09326
09328
09330
09332
09334
09336
09338
09340
09342
09344
09346
09348
09350
09352
09354
09356
09358
09360
09362
09364
09366
09368
09370
Face = .062"
Outside Dia. = Pitch Dia. + .062"
DIAMETRAL PITCH
DIMENSION
BORE
All
HUB DIA.
All
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
10
12
14
15
16
18
20
22
24
26
32
36
40
44
48
54
60
66
72
84
96
100
120
144
192
Style
See
Page
153
Hub
BRASS
10
14
16
20
24
28
32
40
48
64
80
96
112
128
.312
.438
.500
.625
.750
.875
1.000
1.250
1.500
2.000
2.500
3.000
3.500
4.000
8
10
12
14
15
16
18
20
22
24
26
28
30
32
36
40
44
48
52
56
.250
.312
.375
.438
.469
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.125
1.250
1.375
1.500
1.625
1.750
.125
–
–
.1875
–
–
.250
–
–
.3125
–
–
.375
–
–
A
G96
G98
G99
G101
G102
G103
G104
G105
G106
G110
G111
G112
G113
G114
09234
09238
09240
09244
09246
09248
09250
09252
09254
09256
09258
09260
09262
09264
G159
G161
G163
G165
G166
G167
G168
G169
G170
G171
G172
G173
G174
G175
G176
G177
G178
G179
G180
G181
09266
09268
09270
09272
09274
09276
09278
09280
09282
09284
09286
09288
09290
09292
09294
09296
09298
09300
09302
09304
Face = .188"
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
.125
–
–
.1875
–
–
.250
–
–
–
–
.3125
(continued next page)
6
Gear Catalog
A
SPUR GEARS
141/2° PRESSURE ANGLE
32 AND 24 DIAMETRAL PITCH
BRASS AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Style Without Keyway
or Setscrew
See
Page Catalog Item
153 Number Code
Face = .188"
Outside Dia. = Pitch Dia. + .062"
Overall Length = .187" + Hub Proj.
32
DIAMETRAL PITCH
64
72
80
96
112
128
2.000
2.250
2.500
3.000
3.500
4.000
16
20
22
24
28
32
40
48
56
64
80
96
16
18
20
22
24
26
28
30
32
40
48
56
64
80
96
128
160
192
.500
.625
.688
.750
.875
1.000
1.250
1.500
1.750
2.000
2.500
3.000
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.250
1.500
1.750
2.000
2.500
3.000
4.000
5.000
6.000
.25
.3125
With
Setscrew
Catalog Item
Number Code
BRASS
B
C
.62
.31
D
.75
G182
G183
G184
G185
G186
G187
09306
09308
09310
09312
09314
09316
–
–
–
–
–
–
–
–
–
–
–
–
STEEL
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
32 D.P.
TOLERANCE
±.0005
±1/32
24 D.P.
.1875
–
–
.250
–
–
.3125
.375
.3125
–
–
–
–
.375
–
–
.1875
.39
.45
.52
.58
.64
.70
.75
.75
.75
.250
.3125
.375
.31
.31
A
.312
.38
.88
.38
1.00
.38
1.12
1.25
1.88
2.12
2.12
.38
.50
.50
.50
.50
24
DIAMETRAL PITCH
S3216 09572
–
–
S3220 09574
–
–
S3222 09576
–
–
S3224 09578
–
–
S3228 09580
–
–
S3232 09582
–
–
S3240 09584
–
–
S3248 09586
–
–
S3256 09588
–
–
S3264 09590
–
–
S3280 09592
–
–
S3296 09594
–
–
–
–
H3216
09536
–
–
H3218
09538
–
–
H3220
09540
–
–
H3222
09542
–
–
H3224
09544
–
–
H3226
09546
–
–
H3228
09548
–
–
H3230
09550
–
–
H3232
09552
–
–
H3240
09554
–
–
H3248
09556
–
–
H3256
09558
–
–
H3264
09560
–
–
H3280
09562
–
–
H3296
09564
–
–
H32128 09566
–
–
H32160 09568
–
–
H32192 09570
Face = .250"
Outside Dia. = Pitch Dia. + .083"
Overall Length = .250" + Hub Proj.
BRASS
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 38
Lubrication — 152
Materials — 153
Selection Procedure — 37
12
16
18
24
30
36
42
48
54
60
66
72
84
96
120
144
.500
.667
.750
1.000
1.250
1.500
1.750
2.000
2.250
2.500
2.750
3.000
3.500
4.000
5.000
6.000
.1875
.38
.50
.50
.25
.250
.62
.25
.62
.25
B
.3125
.69
.31
C
.375
.75
.75
.75
.88
.88
.31
.31
.31
.38
.38
D
A
G254
G256
G257
G258
G259
G261
G263
G264
G265
G266
G267
G268
G269
G270
G272
G274
09202
09204
09206
09208
09210
09212
09214
09216
09218
09220
09222
09224
09226
09228
09230
09232
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(continued next page)
Gear Catalog
7
SPUR GEARS
141/2° PRESSURE ANGLE
24 AND 20 DIAMETRAL PITCH
STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
& Setscrew†
Catalog
Item
Number
Code
Face = .250"
Outside Dia. = Pitch Dia. + .083"
Overall Length = .250" + Hub Proj.
24
DIAMETRAL PITCH
STEEL
HUB
PROJ.
KEYWAY
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
24 D.P.
TOLERANCE
±.0005
±1/32
20 D.P.
12
15
16
18
21
24
30
36
42
48
60
72
12
14
15
16
18
20
21
24
30
36
42
48
60
72
96
120
144
.500
.625
.667
.750
.875
1.000
1.250
1.500
1.750
2.000
2.500
3.000
.500
.583
.625
.667
.750
.833
.875
1.000
1.250
1.500
1.750
2.000
2.500
3.000
4.000
5.000
6.000
.600*
.600
.650
.700
.750
.800
.900
Alterations — 152
Horsepower Ratings — 38, 39
Lubrication — 152
Materials — 153
Selection Procedure — 37
22
1.100
24
1.200
25
1.250
28
1.400
30
1.500
32
1.600
NA-5/16" bore has #35 (.110) drilled hole through one
wall, no keyway.
35
1.750
NA-3/8" and 1/2" bores have one setscrew, no keyway.
36
1.800
40
2.000
48
50
60
64
2.400
2.500
3.000
3.200
8
Gear Catalog
–
–
.3125
.250
.3125
.375
.500
.36
.46
.50
.54
.62
.70
.74
.87
1.00
1.12
1.12
1.25
1.25
1.38
2.00
2.25
2.25
.31
A
.31
.31
.38
.50
S2412
09630
–
–
S2415
09632
–
–
S2416
09634
–
–
S2418
09636
–
–
S2421
09638
–
–
S2424
09640
–
–
S2430
09642
–
–
S2436
09644
–
–
S2442
09646
–
–
S2448
09648
–
–
S2460
09650
–
–
S2472
09652
–
–
–
–
H2412
09596
–
–
H2414
09598
–
–
H2415
09600
–
–
H2416
09602
–
–
H2418
09604
–
–
H2420
09606
–
–
H2421
09608
–
–
H2424
09610
–
–
H2430
09612
–
–
H2436
09614
–
–
H2442
09616
–
–
H2448
09618
–
–
H2460
09620
–
–
H2472
09622
–
–
H2496
09624
–
–
H24120
09626
–
–
H24144
09628
Face = .375"
Outside Dia. = Pitch Dia. + .100"
Overall Length = .375" + Hub Proj.
STEEL
11
12
13
14
15
16
18
1.000
NA-5/8" & 3/4" bores have standard keyway at 90° to
setscrew. See Page 153.
.500
.250
DIAMETRAL PITCH
20
†H2412 & H2414 have #35 (.110) drilled hole through
one wall, no keyway.
H2415 has one setscrew, no keyway.
–
–
–
–
–
20
REFERENCE PAGES
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
.375
–
–
–
–
–
.3125
.375
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.625
.750
.375
.46
.46
.50
.56
.60
.66
.74
.38
.38
.84
.38
.82
.38
.92
.38
.97
.38
1.12
.38
1.22
.38
1.32
.50
1.47
.50
1.52
.50
1.72
.50
1.33
1.42
1.92
2.12
.50
B
NA11B
NA12B
NA13B
NA14B
NA15B
NA16B
NA18B
NA20B
–
NA22B
–
NA24
–
NA25B
–
NA28B
–
NA30B
–
NA32
–
NA35
–
NA36
–
NA40
–
–
–
NA48A
NA50A
NA60A
NA64A
09662
09664
09666
09668
09670
09672
09674
09676
–
09678
–
09680
–
09682
–
09684
–
09686
–
09688
–
09690
–
09692
–
09694
–
–
–
10208
10210
10212
10214
NA11B-5/16
NA12B-5/16
NA13B-5/16
NA14B-5/16
NA15B-3/8
NA16B-3/8
NA18B-3/8
NA20B-3/8
NA20B-1/2
NA22B-3/8
NA22B-1/2
NA24-3/8
NA24-1/2
NA25B-3/8
NA25B-1/2
NA28B-3/8
NA28B-1/2
NA30B-3/8
NA30B-1/2
NA32-3/8
NA32-1/2
NA35-3/8
NA35-1/2
NA36-3/8
NA36-1/2
NA40-3/8
NA40-1/2
NA40-5/8
NA40-3/4
–
–
–
–
46000
46001
46002
46003
46004
46005
46006
46007
46008
46009
46010
46011
46012
46013
46014
46015
46016
46017
46018
46019
46020
46021
46022
46023
46024
46025
46026
46027
46028
–
–
–
–
SPUR GEARS
141/2° PRESSURE ANGLE
20 AND 16 DIAMETRAL PITCH
CAST IRON, BRASS AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
DIAMETRAL PITCH
HUB
PROJ.
KEYWAY
FACE
PITCH
DIA.
HUB
DIA.
BORE
3.500
3.600
4.000
4.200
4.500
4.800
5.000
5.600
6.000
7.000
7.200
8.000
9.000
10.000
11
12
13
14
15
16
18
.750*
.750
.813
.875
.938
1.000
1.125
20
1.250
22
1.375
24
1.500
†3/8" and 1/2" bores have one setscrew, no keyway.
26
1.625
5/8" bore and larger have standard keyway at 90° to
setscrew. See Page 153.
28
1.750
30
1.875
DIMENSION
BORE
All
HUB DIA.
All
20 D.P.
TOLERANCE
±.0005
±1/32
16 D.P.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 39, 40
Lubrication — 152
Materials — 153
Selection Procedure — 37
1.25
.500
1.25
.500
1.50
1.75
DIAMETRAL PITCH
.500
.563
.625
.750
.875
1.000
1.125
1.250
1.500
1.750
2.000
2.500
3.000
3.500
4.000
5.000
STANDARD TOLERANCES
.375
16
8
9
10
12
14
16
18
20
24
28
32
40
48
56
64
80
OVERALL
LENGTH
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
.1875
–
.250
–
.3125
.75
.375
.88
1.00
1.00
.375
.500
.500
.625
.500
.625
.500
.625
.750
.500
.625
.750
.500
.625
.750
.875
.500
.625
.750
.875
1.000
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .375”
Outside Dia. = Pitch Dia. + .100”
Overall Length = .375” + Hub Proj.
20
70
72
80
84
90
96
100
112
120
140
144
160
180
200
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
.56
.56
.63
.69
.75
.81
.94
.96
1.08
1.20
1.33
1.45
1.58
CAST IRON
NA70
10216
–
–
.50
NA72
10218
–
–
B
NA80
10220
–
–
NA84
10222
–
–
.50
NA90
10224
–
–
C
NA96
10226
–
–
NA100
10228
–
–
NA112
10230
–
–
NA120
10232
–
–
.50
NA140
10234
–
–
D
NA144
10236
–
–
NA160
10238
–
–
.62
NA180
10240
–
–
NA200B 10242
–
–
Face = .313"
Outside Dia. = Pitch Dia. + .125"
Overall Length = Face + Hub Proj.
BRASS
G226
09168
–
–
–
G227
09170
–
–
G228
09172
–
–
G229
09174
–
–
A
G230
09176
–
–
–
G231
09178
–
–
G232
09180
–
–
G233
09182
–
–
G235
09184
–
–
G236
09186
–
–
.31
B
G237
09188
–
–
G238
09190
–
–
G239
09192
–
–
D
G240
09194
–
–
.38
G241
09196
–
–
G242
09198
–
–
STEEL
Face = .500"
NB11B 09704 NB11B-3/8 46029
NB12B 09706 NB12B-3/8 46030
.44
NB13B 09708 NB13B-3/8 46031
NB14B 09710 NB14B-3/8 46032
NB15B 09712 NB15B-1/2 46033
.44
NB16B 09714 NB16B-1/2 46034
NB18B 09716 NB18B-1/2 46035
NB20B 09718 NB20B-1/2 46036
.44
–
–
NB20B-5/8 46037
NB22B 09720 NB22B-1/2 46038
.44
–
–
NB22B-5/8 46039
NB24B 09722 NB24B-1/2 46040
.44
A
–
–
NB24B-5/8 46041
–
–
NB24B-3/4 46042
NB26B 09724 NB26B-1/2 46043
.44
–
–
NB26B-5/8 46044
–
–
NB26B-3/4 40645
NB28B 09726 NB28B-1/2 46046
–
–
NB28B-5/8 46047
.50
–
–
NB28B-3/4 46048
–
–
NB28B-7/8 46049
NB30B 09728 NB30B-1/2 46050
–
–
NB30B-5/8 46051
.50
–
–
NB30B-3/4 46052
–
–
NB30B-7/8 46053
–
–
NB30B-1
46054
(continued next page)
Gear Catalog
9
SPUR GEARS
141/2° PRESSURE ANGLE
16 AND 12 DIAMETRAL PITCH
STEEL, NON-METALLIC AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .500"
Outside Dia. = Pitch Dia. + .125"
Overall Length = .500" + Hub Proj.
16
DIAMETRAL PITCH
STEEL
HUB
PROJ.
KEYWAY
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
TOLERANCE
±.0005
±1/32
32
2.000
.500
.625
.750
.875
1.000
36
40
48
2.250
2.500
3.000
.500
16
20
24
32
40
48
64
1.000
1.250
1.500
2.000
2.500
3.000
4.000
54
56
60
64
72
80
84
96
112
120
128
144
160
192
3.375
3.500
3.750
4.000
4.500
5.000
5.250
6.000
7.000
7.500
8.000
9.000
10.000
12.000
.375
.500
.500
.625
.625
1.70
1.95
1.69
2.19
.81
1.06
1.31
1.81
–
–
–
1.25
1.25
1.38
1.38
1.38
1.50
1.50
1.50
1.50
1.50
1.50
1.75
1.75
2.00
12
DIAMETRAL PITCH
16 D.P.
12 D.P.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 40, 41
Lubrication — 152
Materials — 153
Selection Procedure — 37
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
11
12
13
14
15
16
18
1.000*
1.000
1.083
1.167
1.250
1.333
1.500
20
1.667
21
1.750
22
1.833
24
2.000
30
32
36
40
42
2.500
2.667
3.000
3.333
3.500
†1/2" bore has one setscrew, no keyway.
5/8" bore and larger have standard keyway at 90° to
setscrew. See Page 153.
10
Gear Catalog
.500
.625
.625
.750
.625
.750
.875
.625
.750
.875
1.000
.625
.750
.875
1.000
.625
.75
.75
.83
.92
1.00
.99
1.15
1.32
1.40
1.49
1.65
2.15
1.92
2.25
2.34
2.50
NB32
09730 NB32-1/2
46055
–
–
NB32-5/8
46056
.50
–
–
NB32-3/4
46057
A
–
–
NB32-7/8
46058
–
–
NB32-1
46059
NB36
09732
–
–
.50
NB40A 10244
–
–
NB48A 10246
–
–
NON-METALLIC
QBH16 09014
–
–
.50
QBH20 09018
–
–
.50
QBH24 09022
–
–
.50
A
QBH32 09024
–
–
–
QB40
09000
–
–
–
QB48
09002
–
–
–
QB64
09006
–
–
CAST IRON
.50
NB54
10248
–
–
.50
B
NB56
10250
–
–
.62
NB60
10252
–
–
NB64
10254
–
–
NB72
10256
–
–
C
NB80
10258
–
–
.62
NB84
10260
–
–
NB96
10262
–
–
NB112
10264
–
–
NB120
10266
–
–
D
NB128
10268
–
–
NB144
10270
–
–
.75
NB160B 10272
–
–
NB192B 10274
–
–
Face = .750"
Outside Dia. = Pitch Dia. + .167"
Overall Length = .750" + Hub Proj.
STEEL
ND11B 09744 ND11B-1/2 46060
ND12B 09746 ND12B-1/2 46061
.50
ND13B 09748 ND13B-1/2 46062
ND14B 09750 ND14B-1/2 46063
ND15B 09752 ND15B-5/8 46064
.50
ND16B 09754 ND16B-5/8 46065
ND18B 09756 ND18B-5/8 46066
ND20B 09758 ND20B-5/8 46067
.50
–
–
ND20B-3/4 46068
ND21B 09760 ND21B-5/8 46069
.50
–
–
ND21B-3/4 46070
A
–
–
ND21B-7/8 46071
ND22B 09762 ND22B-5/8 46072
–
–
ND22B-3/4 46073
.50
–
–
ND22B-7/8 46074
–
–
ND22B-1
46075
ND24B 09764 ND24B-5/8 46076
–
–
ND24B-3/4 46077
.50
–
–
ND24B-7/8 46078
–
–
ND24B-1
46079
ND30
09766
–
–
ND32A 10276
–
–
.62
ND36A 10278
–
–
ND40A 10280
–
–
ND42A 10282
–
–
SPUR GEARS
141/2° PRESSURE ANGLE
12 AND 10 DIAMETRAL PITCH
NON-METALLIC, CAST IRON, AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
12
DIAMETRAL PITCH
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
15
18
21
24
30
36
48
60
1.250
1.500
1.750
2.000
2.500
3.000
4.000
5.000
48
54
60
64
72
84
96
108
112
120
144
168
4.000
4.500
5.000
5.333
6.000
7.000
8.000
9.000
9.333
10.000
12.000
14.000
.750
1.00
1.25
1.50
1.75
2.25
–
–
–
.750
1.75
.750
2.00
.875
2.00
.500
.625
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .750"
Outside Dia. = Pitch Dia. + .167"
Overall Length = .750" + Hub Proj.
NON-METALLIC
QDH15 09038
–
–
.50
QDH18 09042
–
–
QDH21 09046
–
–
.50
QDH24 09050
–
–
A
.50
QDH30 09052
–
–
–
QD36
09026
–
–
–
QD48
09030
–
–
–
QD60
09034
–
–
CAST-IRON
ND48
10284
–
–
C
ND54
10286
–
–
ND60
10288
–
–
.75
ND64
10290
–
–
ND72
10292
–
–
ND84
10294
–
–
ND96
10296
–
–
D
ND108 10298
–
–
.75
ND112 10300
–
–
ND120 10302
–
–
ND144 10304
–
–
ND168 10306
–
–
Face = 1.000"
Outside Dia. = Pitch Dia. + .200"
Overall Length = 1.000" + Hub Proj.
1.00
10
DIAMETRAL PITCH
STEEL
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
12 D.P.
TOLERANCE
±.0005
±1/32
10 D.P.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 41, 42
Lubrication — 152
Materials — 153
Selection Procedure — 37
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
†All gears have standard keyway at 90° to setscrew.
See Page 153.
11
12
14
15
16
1.200*
1.200
1.400
1.500
1.600
18
1.800
20
2.000
24
2.400
25
28
30
32
35
36
2.500
2.800
3.000
3.200
3.500
3.600
15
18
20
25
30
1.500
1.800
2.000
2.500
3.000
.625
.750
.750
.875
.750
.875
1.000
.750
.875
1.000
.750
.750
.625
.750
.92
.92
1.02
1.12
1.22
1.42
1.62
2.02
2.12
1.81
2.02
2.22
2.52
2.61
1.20
1.50
1.70
2.20
2.70
NF11B
NF12B
NF14B
NF15B
.62
NF16B
NF18B
.62
–
NF20B
.62
–
A
–
NF24B
.62
–
–
.62
NF25
NF28A
NF30A
.88
NF32A
NF35A
NF36A
NON-METALLIC
QFH15
.62
QFH18
A
QFH20
.62
QFH25
QFH30
.62
09778
09780
09782
09784
09786
09788
–
09790
–
–
09792
–
–
09794
10310
10312
10314
10316
10318
NF11B-5/8
NF12B-5/8
NF14B-5/8
NF15B-3/4
NF16B-3/4
NF18B-3/4
NF18B-7/8
NF20B-3/4
NF20B-7/8
NF20B-1
NF24B-3/4
NF24B-7/8
NF24B-1
–
–
–
–
–
–
46080
46081
46082
46083
46084
46085
46086
46087
46088
46089
46090
46091
46092
–
–
–
–
–
–
09062
09066
09068
09070
09072
–
–
–
–
–
–
–
–
–
–
(continued next page)
Gear Catalog
11
SPUR GEARS
141/2° PRESSURE ANGLE
10 AND 8 DIAMETRAL PITCH
CAST IRON, STEEL AND NON-METALLIC
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
DIAMETRAL PITCH
HUB
PROJ.
KEYWAY
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
4.000
4.200
4.500
4.800
5.000
5.400
5.500
6.000
6.400
7.000
7.200
8.000
8.400
9.000
9.600
10.000
11.000
12.000
14.000
14.400
16.000
18.000
2.12
.875
2.25
2.25
1.00
2.50
2.75
8
DIAMETRAL PITCH
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
10 D.P.
TOLERANCE
±.0005
±1/32
1.500*
1.500
1.750
1.875
.875
1.12
1.12
1.31
1.43
16
2.000
.875
1.56
18
2.250
20
2.500
22
2.750
24
28
30
32
3.000
3.500
3.750
4.000
16
18
20
24
28
2.000
2.250
2.500
3.000
3.500
8 D.P.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 42, 43
Lubrication — 152
Materials — 153
Selection Procedure — 37
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
†All gears have standard keyway, at 90° to setscrew.
See Page 153.
12
11
12
14
15
Gear Catalog
.750
.875
1.000
1.125
.875
1.000
1.125
.875
1.000
1.125
2.06
.875
2.06
2.56
2.75
3.00
1.000
.750
.875
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 1.000"
Outside Dia. = Pitch Dia. + .200"
Overall Length = 1.000" + Hub Proj.
10
40
42
45
48
50
54
55
60
64
70
72
80
84
90
96
100
110
120
140
144
160
180
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
1.81
2.31
1.62
1.88
2.12
2.62
3.12
CAST IRON
NF40
10320
–
–
NF42
10322
–
–
B
NF45
10324
–
–
NF48
10326
–
–
NF50
10328
–
–
C
NF54
10330
–
–
.88
NF55
10332
–
–
NF60
10334
–
–
NF64
10336
–
–
NF70
10338
–
–
NF72
10340
–
–
NF80
10342
–
–
NF84
10344
–
–
D
NF90
10346
–
–
NF96
10348
–
–
.88
NF100
10350
–
–
NF110
10352
–
–
NF120
10356
–
–
NF140
10358
–
–
1.00
NF144
10360
–
–
NF160
10362
–
–
NF180
10364
–
–
Face = 1.250"
Outside Dia. = Pitch Dia. + .250"
Overall Length = 1.250" + Hub Proj.
STEEL
NH11B 09806 NH11B-3/4 46093
.75
NH12B 09808 NH12B-3/4 46094
NH14B 09810 NH14B-3/4 46095
.75
NH15B 09812 NH15B-7/8 46096
NH16B 09814 NH16B-7/8 46097
.75
–
–
NH16B-1
46098
NH18B 09816 NH18B-7/8 46099
.75
–
–
NH18B-1
46100
–
–
NH18B-1-1/8 46101
A
NH20B 09818 NH20B-7/8 46102
.75
–
–
NH20B-1
46103
–
–
NH20B-1-1/8 46104
NH22B 09820 NH22B-7/8 46105
.75
–
–
NH22B-1
46106
–
–
NH22B-1-1/8 46107
NH24A 10368
–
–
.88
NH28A 10370
–
–
NH30A 10372
–
–
.88
NH32A 10374
–
–
NON-METALLIC
QHH16 09082
–
–
.75
QHH18 09084
–
–
A
QHH20 09086
–
–
.75
QHH24 09088
–
–
QHH28 09090
–
–
SPUR GEARS
141/2° PRESSURE ANGLE
8 AND 6 DIAMETRAL PITCH
CAST IRON AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
DIAMETRAL PITCH
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
DIMENSION
BORE
All
HUB DIA.
All
TOLERANCE
±.0005
±1/32
14
15
18
6 D.P.
20
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 43, 44
Lubrication — 152
Materials — 153
Selection Procedure — 37
2.50
1.125
3.00
1.125
3.25
DIAMETRAL PITCH
16
8 D.P.
1.000
6
11
12
STANDARD TOLERANCES
4.500
5.000
5.250
5.500
6.000
6.750
7.000
7.500
8.000
9.000
10.000
10.500
11.000
12.000
14.000
15.000
16.000
18.000
20.000
21
24
27
30
2.000*
2.000 1.000
2.333 1.000
1.125
1.000
2.500 1.125
1.1875
1.250
1.000
2.667 1.125
1.1875
1.250
1.000
3.000 1.125
1.1875
1.250
1.000
3.333 1.125
1.1875
1.250
3.500 1.000
4.000
4.500 1.125
5.000
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 1.250"
Outside Dia. = Pitch Dia. + .250"
Overall Length = 1.250" + Hub Proj.
8
36
40
42
44
48
54
56
60
64
72
80
84
88
96
112
120
128
144
160
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
1.46
1.79
1.96
2.13
2.46
2.79
2.96
3.00
3.50
4.00
CAST IRON
NH36
10376
–
–
NH40
10378
–
–
B
NH42
10380
–
–
NH44
10382
–
–
NH48
10384
–
–
1.00
C
NH54
10386
–
–
NH56
10388
–
–
NH60
10390
–
–
NH64
10392
–
–
NH72
10394
–
–
NH80
10396
–
–
NH84
10398
–
–
D
NH88
10400
–
–
NH96
10402
–
–
1.12
NH112 10404
–
–
NH120 10406
–
–
NH128 10408
–
–
NH144 10410
–
–
1.25
NH160-B 10412
–
–
Face = 1.500"
Outside Dia. = Pitch Dia + .333"
Overall Length = 1.500" + Hub Proj.
STEEL
NJ11B
09830 NJ11B-1
46108
.88
NJ12B
09832 NJ12B-1
46109
NJ14B
09834 NJ14B-1
46110
.88
–
–
NJ14B-1-1/8 46111
NJ15B
09836 NJ15B-1
46112
–
–
NJ15B-1-1/8 46113
.88
–
–
NJ15B-1-3/16 46114
–
–
NJ15B-1-1/4 46115
NJ16B
09838 NJ16B-1
46116
–
–
NJ16B-1-1/8 46117
.88
A
–
–
NJ16B-1-3/16 46118
–
–
NJ16B-1-1/4 46119
NJ18B
09840 NJ18B-1
46120
–
–
NJ18B-1-1/8 46121
.88
–
–
NJ18B-1-3/16 46122
–
–
NJ18B-1-1/4 46123
NJ20
09842 NJ20-1
46124
–
–
NJ20-1-1/8
46125
.88
–
–
NJ20-1-3/16 46126
–
–
NJ20-1-1/4
46127
.88
NJ21B
09844
–
–
NJ24A
10414
–
–
.88
NJ27A
10416
–
–
NJ30A
10418
–
–
(continued next page)
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
†All gears have standard keyway, at 90° to setscrew.
See Page 153.
Gear Catalog
13
SPUR GEARS
141/2° PRESSURE ANGLE
6 AND 5 DIAMETRAL PITCH
CAST IRON AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Style
See
Page
153
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = 1.500˝
Outside Dia. = Pitch Dia + .333˝
Overall Length = 1.500˝ + Hub Proj.
6
DIAMETRAL PITCH
CAST IRON
32
33
36
40
42
48
54
60
64
66
72
84
96
108
120
144
HUB
PROJ.
FACE
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
5.333
5.500
6.000
6.667
7.000
8.000
9.000
10.000
10.667
11.000
12.000
14.000
16.000
18.000
20.000
24.000
B
1.125
2.50
1.00
C
1.25
D
3.00
1.250
3.25
3.50
3.75
1.50
DIAMETRAL PITCH
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
6 D.P.
TOLERANCE
±.0005
±1/32
5 D.P.
11
12
14
15
16
18
20
24
25
30
35
40
45
50
55
60
70
80
100
2.400*
2.400
2.800
3.000
3.200
3.600
4.000
4.800
5.000
6.000
7.000
8.000
9.000
10.000
11.000
12.000
14.000
16.000
20.000
1.0625
STEEL
1.78
1.78
2.18
2.38
.88
2.58
2.98
3.38
CAST IRON
1.0625
3.00
1.25
1.1875
3.00
1.25
1.1875
3.50
1.25
1.3125
3.75
1.50
A
A
B
D
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 44
Lubrication — 152
Materials — 153
Selection Procedure — 37
14
Gear Catalog
10420
10422
10424
10426
10428
10430
10432
10434
10436
10438
10440
10442
10444
10446
10448
10452
Face = 1.750"
Outside Dia. = Pitch Dia. + .400"
Overall Length = 1.750" + Hub Proj.
5
OVERALL
LENGTH
NJ32
NJ33
NJ36
NJ40
NJ42
NJ48
NJ54
NJ60
NJ64
NJ66
NJ72
NJ84
NJ96
NJ108
NJ120B
NJ144B
NK11B
NK12B
NK14B
NK15B
NK16B
NK18B
NK20B
09846
09848
09850
09852
09854
09856
09858
NK24B
NK25B
NK30B
NK35B
NK40B
NK45B
NK50B
NK55B
NK60B
NK70B
NK80B
NK100B
10454
10456
10458
10460
10462
10464
10466
10468
10470
10472
10474
10478
SPUR GEARS
141/2° PRESSURE ANGLE
4 AND 3 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
DIAMETRAL PITCH
HUB
PROJ.
KEYWAY
FACE
PITCH
DIA.
24
28
30
32
36
40
42
44
48
54
56
60
64
72
80
84
88
96
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
4 D.P.
TOLERANCE
±.0005
±1/32
3 D.P.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 44, 45
Lubrication — 152
Materials — 153
Selection Procedure — 37
3.000*
3.000
3.500
3.750
4.000
4.500
5.000
5.500
6.000
7.000
7.500
8.000
9.000
10.000
10.500
11.000
12.000
13.500
14.000
15.000
16.000
18.000
20.000
21.000
22.000
24.000
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = 2.000"
Outside Dia. = Pitch Dia. + .500"
Overall Length = 2.000" + Hub Proj.
4
11
12
14
15
16
18
20
22
Style
See
Page
153
1.125
STEEL
2.27
2.27
2.77
3.02
.88
3.27
3.77
4.27
4.77
CAST IRON
1.125
A
A
3.50
B
C
1.250
1.50
4.00
D
1.50
1.375
4.50
1.75
NL11B
NL12B
NL14B
NL15B
NL16B
NL18B
NL20B
NL22B
09860
09862
09864
09866
09868
09870
09872
09874
NL24B
NL28B
NL30
NL32B
NL36B
NL40B
NL42
NL44B
NL48B
NL54
NL56B
NL60
NL64B
NL72B
NL80B
NL84
NL88B
NL96B
10484
10486
10488
10490
10492
10494
10496
10498
10500
10502
10504
10506
10508
10510
10512
10514
10516
10518
Face = 3.000"
Outside Dia. = Pitch Dia. + .667"
Overall Length = Face + Hub Proj.
3
DIAMETRAL PITCH
STEEL
11
12
14
15
16
18
20
21
24
30
36
42
48
54
60
72
84
96
108
4.000*
4.000
4.667
5.000
5.333
6.000
6.667
7.000
8.000
10.000
12.000
14.000
16.000
18.000
20.000
24.000
28.000
32.000
36.000
1.3125
–
–
A
CAST IRON
4.50
1.25
1.4375
5.25
1.75
1.5625
5.25
1.75
1.6875
5.50
5.75
1.75
1.9375
5.75
1.75
B
C
D
NO11B†
NO12B†
NO14B
NO15B
NO16B
NO18B
NO20
NO21B
09876
09878
09880
09882
09884
09886
09888
09890
NO24B
NO30B
NO36B
NO42
NO48B
NO54
NO60B
NO72B
NO84B
NO96B
NO108B
10524
10526
10528
10530
10532
10534
10536
10538
10540
10542
10544
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
†NO11B and NO12B have 4" Face.
Gear Catalog
15
CHANGE GEARS
141/2° PRESSURE ANGLE
20 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
20
DIAMETRAL PITCH
.375 FACE
PITCH
DIA.
1
1
(2) 8 ´ 16 KEYWAYS
180° APART
HUB
DIA.
.625 BORE
REFERENCE PAGES
20 D.P.
Alterations — 152
Horsepower Ratings — 39
Lubrication — 152
Materials — 153
Selection Procedure — 37
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GA series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.4370
.4380
.125
.737
.733
.625
.750
ORDER BY CATALOG NUMBER
OR ITEM CODE
16
CATALOG NO.
ITEM CODE
GAB20A
18500
Gear Catalog
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
STEEL
1.000
GA20
1.050
GA21
1.100
GA22
1.150
GA23
1.200
GA24
1.250
GA25
1.300
GA26
1.350
GA27
1.400
GA28
1.450
GA29
1.500
GA30
1.550
GA31
1.600
GA32
1.650
GA33
1.700
–
GA34
1.750
GA35
1.800
GA36
1.850
GA37
1.900
GA38
1.950
GA39
2.000
GA40
2.050
GA41
2.100
GA42
2.150
GA43
2.200
GA44
2.250
GA45
2.300
GA46
2.350
GA47
2.400
GA48
2.450
GA49
2.500
GA50
CAST IRON
2.550
GA51B
2.600
GA52B
2.650
GA53B
2.700
GA54B
2.750
GA55B
2.800
GA56B
2.850
GA57B
2.900 1.38 GA58B
2.950
GA59B
3.000
GA60B
3.050
GA61B
3.100
GA62B
3.150
GA63B
3.200
GA64B
3.250
GA65B
3.300
GA66B
3.350 1.56 GA67B
3.400
GA68B
3.450
GA69B
3.500
GA70B
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.100"
10038
10040
10042
10044
10046
10048
10050
10052
10054
10056
10058
10060
10062
10064
10066
10068
10070
10072
10074
10076
10078
10080
10082
10084
10086
10088
10090
10092
10094
10096
10098
10802
10804
10806
10808
10810
10812
10814
10816
10818
10820
10822
10824
10826
10828
10830
10832
10834
10836
10838
10840
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CAST IRON
3.550
GA71B
3.600
GA72B
3.650
GA73B
3.700
GA74B
3.750 1.56 GA75B
3.800
GA76B
3.850
GA77B
3.900
GA78B
3.950
GA79B
4.000
GA80B
4.050
GA81B
4.100
GA82B
4.150
GA83B
4.200
GA84B
4.250
GA85B
4.300
GA86B
4.350
GA87B
4.400
GA88B
4.450
GA89B
4.500
GA90B
4.550
GA91B
4.600
GA92B
4.650
GA93B
4.700
GA94B
4.750
GA95B
4.800
GA96B
4.850
GA97B
4.900 1.69 GA98B
4.950
GA99B
5.000
GA100B
5.050
GA101B
5.100
GA102B
5.150
GA103B
5.200
GA104B
5.250
GA105B
5.300
GA106B
5.350
GA107B
5.400
GA108B
5.450
GA109B
5.500
GA110B
5.550
GA111B
5.600
GA112B
5.650
GA113B
5.700
GA114B
5.750
GA115B
5.800
GA116B
5.850
GA117B
5.900
GA118B
5.950
GA119B
6.000
GA120B
Style
See
Page
153
10842
10844
10846
10848
10850
10852
10854
10856
10858
10860
10862
10864
10866
10868
10870
10872
10874
10876
10878
10880
10882
10884
10886
10888
10890
10892
10894
10896
10898
10900
10902
10904
10906
10908
10910
10912
10914
10916
10918
10920
10922
10924
10926
10928
10930
10932
10934
10936
10938
10940
20 – 50 Teeth – A
51 – 78 Teeth – B
79 – 120 Teeth – C
CHANGE GEARS
141/2° PRESSURE ANGLE
16 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
16
DIAMETRAL PITCH
3
3
´
KEYWAYS
16 32
180° APART
.500 FACE
PITCH
DIA.
(2)
HUB
DIA.
.750 BORE
REFERENCE PAGES
16 D.P.
Alterations — 152
Horsepower Ratings — 40
Lubrication — 152
Materials — 153
Selection Procedure — 37
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GB series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.4995
.5005
.188
.914
.910
.750
1.000
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
STEEL
1.250
GB20
1.313
GB21
1.375
GB22
1.438
GB23
1.500
GB24
1.563
GB25
1.625
GB26
1.688
GB27
1.750
GB28
1.813
GB29
1.875
–
GB30
1.938
GB31
2.000
GB32
2.063
GB33
2.125
GB34
2.188
GB35
2.250
GB36
2.313
GB37
2.375
GB38
2.438
GB39
2.500
GB40
CAST IRON
2.563
GB41B
2.625
GB42B
2.688
GB43B
2.750
GB44B
2.913
GB45B
2.875
GB46B
2.938 1.56 GB47B
3.000
GB48B
3.063
GB49B
3.125
GB50B
3.188
GB51B
3.250
GB52B
3.313
GB53B
3.375
GB54B
3.438
GB55B
3.500
GB56B
3.563
GB57B
3.625
GB58B
3.688
GB59B
3.750
GB60B
3.813
GB61B
3.875
GB62B
3.938
GB63B
4.000 1.81 GB64B
4.063
GB65B
4.125
GB66B
4.188
GB67B
4.250
GB68B
4.313
GB69B
4.375
GB70B
4.438
GB71B
4.500
GB72B
4.563
GB73B
4.625
GB74B
4.688
GB75B
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.125"
10100
10102
10104
10106
10108
10110
10112
10114
10116
10118
10120
10122
10124
10126
10128
10130
10132
10134
10136
10138
10140
10942
10944
10946
10948
10950
10952
10954
10956
10958
10960
10962
10964
10966
10968
10970
10972
10974
10976
10978
10980
10982
10984
10986
10988
10990
10992
10994
10996
10998
11000
11002
11004
11006
11008
11010
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
CAST IRON
4.750
GB76B
4.813
GB77B
4.875
GB78B
4.938
GB79B
5.000
GB80B
5.063
GB81B
5.125
GB82A
5.188
GB83A
5.250
GB84A
5.313
GB85A
5.375
GB86A
5.438
GB87A
5.500
GB88A
5.563
GB89A
5.625
GB90A
5.688
GB91A
5.750
GB92A
5.813
GB93A
5.875
GB94A
5.938
GB95A
6.000
GB96A
6.063
GB97A
6.125
GB98A
6.188
GB99A
6.250
GB100A
6.313 1.81 GB101A
6.375
GB102A
6.438
GB103A
6.500
GB104A
6.563
GB105A
6.625
GB106A
6.688
GB107A
6.750
GB108A
6.913
GB109A
6.975
GB110A
6.938
GB111A
7.000
GB112A
7.063
GB113A
7.125
GB114A
7.188
GB115A
7.250
GB116A
7.313
GB117A
7.375
GB118A
7.438
GB119A
7.500
GB120A
7.563
GB121A
7.625
GB122A
7.688
GB123A
7.750
GB124A
7.813
GB125A
7.875
GB126A
7.938
GB127A
8.000
GB128A
Style
See
Page
153
11012
11014
11016
11018
11020
11022
11024
11026
11028
11030
11032
11034
11036
11038
11040
11042
11044
11046
11048
11050
11052
11054
11056
11058
11060
11062
11064
11066
11068
11070
11072
11074
11076
11078
11080
11082
11084
11086
11088
11090
11092
11094
11096
11098
11100
11102
11104
11106
11108
11110
11112
11114
11116
20 – 40 Teeth – A
41 – 79 Teeth – B
80 – 128 Teeth – C
ORDER BY CATALOG NUMBER
OR ITEM CODE
CATALOG NO.
ITEM CODE
GBB16A
18502
Gear Catalog
17
CHANGE GEARS
141/2° PRESSURE ANGLE
12 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
12
DIAMETRAL PITCH
1 1
(2) – ´ – KEYWAYS
4 8
180° APART
.750 FACE
PITCH
DIA.
HUB
DIA.
1.000 BORE
REFERENCE PAGES
12 D.P.
Alterations — 152
Horsepower Ratings — 41
Lubrication — 152
Materials — 153
Selection Procedure — 37
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GD series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.7495
.7505
.250
1.217
1.213
1.000
1.50
ORDER BY CATALOG NUMBER
OR ITEM CODE
18
CATALOG NO.
ITEM CODE
GDB12A
18504
Gear Catalog
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
STEEL
1.667
GD20
1.750
GD21
1.833
GD22
1.917
GD23
2.000
GD24
2.083
GD25
2.167
GD26
2.250
GD27
2.333
–
GD28
2.417
GD29
2.500
GD30
2.583
GD31
2.667
GD32
2.750
GD33
2.833
GD34
2.971
GD35
3.000
GD36
CAST IRON
3.083
GD37A
3.167
GD38A
3.250
GD39A
3.333
GD40A
3.417
GD41A
3.500 1.76 GD42A
3.583
GD43A
3.667
GD44A
3.750
GD45A
3.833
GD46A
3.917
GD47A
4.000
GD48A
4.083
GD49A
4.167
GD50A
4.250
GD51A
4.333
GD52A
4.417
GD53A
4.500
GD54A
4.583
GD55A
4.667
GD56A
4.750
GD57A
4.833
GD58A
4.917
GD59A
5.000
GD60A
5.083 2.19 GD61A
5.167
GD62A
5.250
GD63A
5.333
GD64A
5.417
GD65A
5.500
GD66A
5.583
GD67A
5.667
GD68A
5.750
GD69A
5.833
GD70A
5.917
GD71A
6.000
GD72A
6.083
GD73A
6.167
GD74A
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.167"
10142
10144
10146
10148
10150
10152
10154
10156
10158
10160
10162
10164
10166
10168
10170
10172
10174
11118
11120
11122
11124
11126
11128
11130
11132
11134
11136
11138
11140
11142
11144
11146
11148
11150
11152
11154
11156
11158
11160
11162
11164
11166
11168
11170
11172
11174
11176
11178
11180
11182
11184
11186
11188
11190
11192
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CAST IRON
6.250
GD75A
6.333
GD76A
6.417
GD77A
6.500
GD78A
6.583 2.19 GD79A
6.667
GD80A
6.750
GD81A
6.833
GD82A
6.917
GD83A
7.000
GD84A
7.083
GD85A
7.167
GD86A
7.250
GD87A
7.333
GD88A
7.417
GD89A
7.500
GD90A
7.583
GD91A
7.667
GD92A
7.750
GD93A
7.833
GD94A
7.917
GD95A
8.000
GD96A
8.083
GD97A
8.167
GD98A
8.250
GD99A
8.333 2.44 GD100A
8.417
GD101A
8.500
GD102A
8.583
GD103A
8.667
GD104A
8.750
GD105A
8.833
GD106A
8.917
GD107A
9.000
GD108A
9.083
GD109A
9.167
GD110A
9.250
GD111A
9.333
GD112A
9.417
GD113A
9.500
GD114A
9.583
GD115A
9.667
GD116A
9.750
GD117A
9.833
GD118A
9.917
GD119A
10.000
GD120A
Style
See
Page
153
11194
11196
11198
11200
11202
11204
11206
11208
11210
11212
11214
11216
11218
11220
11222
11224
11226
11228
11230
11232
11234
11236
11238
11240
11242
11244
11246
11248
11250
11252
11254
11256
11258
11260
11262
11264
11266
11268
11270
11272
11274
11276
11278
11280
11282
11284
20 – 36 Teeth – A
37 – 60 Teeth – B
61 – 120 Teeth – C
CHANGE GEARS
141/2° PRESSURE ANGLE
10 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
10
DIAMETRAL PITCH
5
5
´
KEYWAYS
16 32
180° APART
1.000" FACE
PITCH
DIA.
(2)
HUB
DIA.
1.250 BORE
REFERENCE PAGES
10 D.P.
Alterations — 152
Horsepower Ratings — 42
Lubrication — 152
Materials — 153
Selection Procedure — 37
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GF series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.9995
1.0005
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
STEEL
2.000
GF20
2.100
GF21
2.200
GF22
2.300
GF23
2.400
GF24
2.500
–
GF25
2.600
GF26
2.700
GF27
2.800
GF28
2.900
GF29
3.000
GF30
CAST IRON
3.100
GF31B
3.200
GF32B
3.300
GF33B
3.400
GF34B
3.500
GF35B
3.600 1.94 GF36B
3.700
GF37B
3.800
GF38B
3.900
GF39B
4.000
GF40B
4.100
GF41B
4.200
GF42B
4.300
GF43B
4.400
GF44B
4.500
GF45B
4.600
GF46B
4.700
GF47B
4.800 2.68 GF48B
4.900
GF49B
5.000
GF50B
5.100
GF51B
5.200
GF52A
5.300
GF53A
5.400
GF54A
5.500
GF55A
5.600
GF56A
5.700 3.12 GF57A
5.800
GF58A
5.900
GF59A
6.000
GF60A
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.200"
10176
10178
10180
10182
10184
10186
10188
10190
10192
10194
10196
11286
11288
11290
11292
11294
11296
11298
11300
11302
11304
11306
11308
11310
11312
11314
11316
11318
11320
11322
11324
11326
11328
11330
11332
11334
11336
11338
11340
11342
11344
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CAST IRON
6.100
GF61A
6.200
GF62A
6.300
GF63A
6.400
GF64A
6.500
GF65A
6.600
GF66A
6.700
GF67A
6.800
GF68A
6.900
GF69A
7.000
GF70A
7.100
GF71A
7.200
GF72A
7.300
GF73A
7.400
GF74A
7.500
GF75A
7.600
GF76A
7.700
GF77A
7.800
GF78A
7.900
GF79A
8.000
GF80A
3.12
8.100
GF81A
8.200
GF82A
8.300
GF83A
8.400
GF84A
8.500
GF85A
8.600
GF86A
8.700
GF87A
8.800
GF88A
8.900
GF89A
9.000
GF90A
9.100
GF91A
9.200
GF92A
9.300
GF93A
9.400
GF94A
9.500
GF95A
9.600
GF96A
9.700
GF97A
9.800
GF98A
9.900
GF99A
10.000
GF100A
Style
See
Page
153
11346
11348
11350
11352
11354
11356
11358
11360
11362
11364
11366
11368
11370
11372
11374
11376
11378
11380
11382
11384
11386
11388
11390
11392
11394
11396
11398
11400
11402
11404
11406
11408
11410
11412
11414
11416
11418
11420
11422
11424
20 – 30 Teeth – A
31 – 66 Teeth – B
67 – 100 Teeth – C
.313
1.523
1.519
1.250
2.000
ORDER BY CATALOG NUMBER
OR ITEM CODE
CATALOG NO.
ITEM CODE
GFB10A
18506
Gear Catalog
19
CHANGE GEARS
141/2° PRESSURE ANGLE
8 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
8
DIAMETRAL PITCH
20
21
22
23
24
3 3
(2) 8 ´ 16 KEYWAYS
180° APART
1.250 FACE
PITCH
DIA. HUB
DIA.
1.375 BORE
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 43
Lubrication — 152
Materials — 153
Selection Procedure — 37
8 D.P.
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GH series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
1.1245
1.1255
.375
1.698
1.694
1.375
2.50
ORDER BY CATALOG NUMBER
OR ITEM CODE
20
CATALOG NO.
ITEM CODE
GHB8A
18508
Gear Catalog
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
STEEL
2.500
–
GH20
2.625
–
GH21
2.750
–
GH22
2.875
–
GH23
3.000
–
GH24
CAST IRON
3.125
GH25B
3.250
GH26B
3.375
GH27B
3.500
GH28B
3.625
GH29B
3.750 2.06 GH30B
3.875
GH31B
4.000
GH32B
4.125
GH33B
4.250
GH34B
4.375
GH35B
4.500
GH36B
4.625
GH37B
4.750
GH38B
4.875
GH39B
5.000
GH40B
5.125 2.69 GH41A
5.250
GH42A
5.375
GH43A
5.500
GH44A
5.625
GH45A
5.750
GH46A
5.875
GH47A
6.000
GH48A
6.125
GH49A
6.250
GH50A
6.375
GH51A
6.500 3.12 GH52A
6.625
GH53A
6.750
GH54A
6.875
GH55A
7.000
GH56A
7.125
GH57A
7.250
GH58A
7.375 3.25 GH59A
7.500
GH60A
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.250"
10198
10200
10202
10204
10206
11426
11428
11430
11432
11434
11436
11438
11440
11442
11444
11446
11448
11450
11452
11454
11456
11458
11460
11462
11464
11466
11468
11470
11472
11474
11476
11478
11480
11482
11484
11486
11488
11490
11492
11494
11496
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CAST IRON
7.625
GH61A
7.750
GH62A
7.875
GH63A
8.000
GH64A
8.125
GH65A
8.250
GH66A
8.375
GH67A
8.500
GH68A
8.625
GH69A
8.750 3.25 GH70A
8.875
GH71A
9.000
GH72A
9.125
GH73A
9.250
GH74A
9.375
GH75A
9.500
GH76A
9.625
GH77A
9.750
GH78A
9.875
GH79A
10.000
GH80A
10.125
GH81A
10.250
GH82A
10.375
GH83A
10.500
GH84A
10.625
GH85A
10.750
GH86A
10.875
GH87A
11.000
GH88A
11.125 3.75 GH89A
11.250
GH90A
11.375
GH91A
11.500
GH92A
11.625
GH93A
11.750
GH94A
11.875
GH95A
12.000
GH96A
12.125
GH97A
12.250
GH98A
12.375
GH99A
12.500
GH100A
Style
See
Page
153
11498
11500
11502
11504
11506
11508
11510
11512
11514
11516
11518
11520
11522
11524
11526
11528
11530
11532
11534
11536
11538
11540
11542
11544
11546
11548
11550
11552
11554
11556
11558
11560
11562
11564
11566
11568
11570
11572
11574
11576
20 – 24 Teeth – A
25 – 57 Teeth – B
58 – 68 Teeth – C
69 – 100 Teeth – D
STEM PINIONS
141/2° PRESSURE ANGLE
20 THROUGH 6 DIAMETRAL PITCH
STEEL
(Will not operate with 20° spurs)
Boston Gear Stem Pinions feature small numbers of teeth cut integral on a steel
shaft. Undercutting of the teeth is minimized by the use of special enlarged Pitch
Diameters. When run with standard stock spur gears, they provide high ratios
not normally found in spur gear drives. They are not intended to be operated
with each other, with internal gears or with 11 tooth pinions, but will run satisfactorily with all other standard 141⁄2° Pressure Angle spur gears.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.*
Stem
Dia.
Stem
Length
Overall
Length
Catalog
Number
.375
.375
.500
.625
2.875
2.875
3.375
3.375
4.500
4.500
5.000
5.000
NAR5
NAR6
NAR8
NAR10
.4375
.500
.625
.750
3.125
3.125
3.375
3.375
5.000
5.000
5.250
5.250
NBR5
NBR6
NBR8
NBR10
.625
.625
.750
.875
1.000
4.375
4.375
4.375
4.375
4.375
7.250
7.250
7.250
7.250
7.250
NDR5
NDR6
NDR7
NDR8
NDR10
.750
.750
.875
1.000
1.125
4.375
4.375
4.375
4.375
4.375
7.500
7.500
7.500
7.500
7.500
NFR5
NFR6
NFR7
NFR8
NFR10
.875
1.000
1.125
1.125
1.500
4.375
4.375
4.375
4.375
4.375
7.750
7.750
7.750
7.750
7.750
NHR5
NHR6
NHR7
NHR8
NHR10
20
DIAMETRAL PITCH
PITCH
DIA
(SPL)
OVERALL LENGTH
FACE
5
6
8
10
STEM LENGTH
STEM
DIA
STANDARD TOLERANCES
DIMENSION
STEM DIA.
All
TOLERANCE
+.0000 – .0015
.287
.335
.430
.525
FACE = 1.125"
16
DIAMETRAL PITCH
5
6
8
10
.359
.419
.537
.656
DIAMETRAL PITCH
.479
.558
.637
.716
.875
DIAMETRAL PITCH
.575
.670
.765
.860
1.050
DIAMETRAL PITCH
.718
.837
.956
1.075
1.312
DIAMETRAL PITCH
.958
1.116
1.433
1.750
09768
09770
09772
09774
09776
FACE = 2.500"
6
5
6
8
10
09734
09736
09738
09740
09742
FACE = 2.250"
8
5
6
7
8
10
09696
09698
09700
09702
FACE = 2.000"
10
5
6
7
8
10
09654
09656
09658
09660
FACE = 1.375"
12
5
6
7
8
10
Item
Code
09796
09798
09800
09802
09804
FACE = 3.000"
1.250
1.375
1.625
2.000
4.375
4.375
5.000
5.375
8.500
8.500
9.000
9.500
NJR5
NJR6
NJR8
NJR10
09822
09824
09826
09828
*Used for calculating Center Distance, not ratio.
Gear Catalog
21
DRAWN PINION WIRE
141/2° PRESSURE ANGLE
48, 32 AND 24 DIAMETRAL PITCH
BRASS AND STEEL
(Will not operate with 20° spurs)
ORDER BY CATALOG NUMBER
OR ITEM CODE
No. of
Teeth
Pitch
Dia.
Catalog
Number
Item
Code
48
DIAMETRAL PITCH
Drawn Pinion Wire, teeth not generated.
All Pinion Wire is stocked in 4 foot
pieces. Other lengths can be furnished
on special order. Price on application.
6
8
9
10
12
14
15
16
18
.125
.167
.188
.208
.250
.292
.312
.333
.375
6
8
9
10
12
14
15
16
18
.125
.167
.188
.208
.250
.292
.312
.333
.375
BRASS
G24
G25
G26
G27
G29
G30
G31
G32
G33
STEEL
GS24
GS25
GS26
GS27
GS29
GS30
GS31
GS32
GS33
36900
36902
36904
36906
36908
36910
36912
36914
36916
36954
36956
36958
36960
36962
36964
36966
36968
36970
32
DIAMETRAL PITCH
6
8
9
10
11
12
14
15
16
.188
.250
.281
.312
.344
.375
.438
.469
.500
6
8
9
10
11
12
14
15
16
.188
.250
.281
.312
.344
.375
.438
.469
.500
BRASS
G39
G40
G41
G42
G43
G44
G45
G46
G47
STEEL
GS39
GS40
GS41
GS42
GS43
GS44
GS45
GS46
GS47
36918
36920
36922
36924
36926
36928
36930
36932
36934
36972
36974
36976
36978
36980
36982
36984
36986
36988
24
DIAMETRAL PITCH
22
Gear Catalog
6
9
10
12
14
15
16
.250
.375
.417
.500
.583
.625
.667
6
8
9
10
11
12
14
15
16
.250
.333
.375
.417
.458
.500
.583
.625
.667
BRASS
G54
G56
G57
G59
G60
G61
G62
STEEL
GS54
GS55
GS56
GS57
GS58
GS59
GS60
GS61
GS62
36936
36940
36942
36946
36948
36950
36952
36990
36992
36994
36996
36998
37000
37002
37004
37006
RACK
141/2° PRESSURE ANGLE
48 THROUGH 3 DIAMETRAL PITCH
NYLON, BRASS AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Pitch Nom- Mating
Nylon
Brass
Steel
Overall Line
inal
Spur
Thick- to Back Length Gear Catalog Item Catalog Item Catalog Item
ness
(B)
(Feet) Page # Number Code Number Code Number Code
48 DIAMETRAL PITCH
FACE WIDTH = .125"
1
2
32 DIAMETRAL PITCH
.125
1
2
7,8
4
20 DIAMETRAL PITCH
GP579-1 53901
–
–
–
–
–
–
G579-2 12716 L505-2 12732
–
–
G579-4 12718 L505-4 12734
FACE WIDTH = .375"
OVERALL
THICKNESS
STANDARD TOLERANCES‡
DIMENSION
LENGTH†
All
1/8 – 3/4
FACE
1 – 1-1/2
WIDTH
1-3/4 – 2
3
†Ends not machined. Tolerance allows for cutting and
matching. Nylon Rack is molded in proper lengths to
permit end to end butting without interruption of tooth
spacing.
‡Brass and steel only.
–
–
–
2
4
9,10
4
.500
.438
6
12 DIAMETRAL PITCH
–
–
–
–
–
–
–
–
4
6
10,11
.750
.667
4
6
10 DIAMETRAL PITCH
–
–
–
–
–
–
–
–
–
–
–
–
–
L514-4 12750
–
L514-6 12752
–
L515-4 12754
–
L515-6 12756
FACE WIDTH = 1.000"
4
6
11,12
4
1.000
.900
6
8 DIAMETRAL PITCH
–
–
–
–
–
–
–
–
–
–
–
–
–
L516-4 37324
–
L516-6 37326
–
L517-4 37328
–
L517-6 37330
FACE WIDTH = 1.250"
4
6
12,13
4
1.250 1.125
6
6 DIAMETRAL PITCH
–
–
–
–
–
–
–
–
–
–
–
–
–
L518-4 37332
–
L518-6 37334
–
L519-4 37336
–
L519-6 37338
FACE WIDTH = 1.500"
4
6
13,14
4
1.500 1.333
6
5 DIAMETRAL PITCH
–
–
–
–
–
–
–
–
–
–
–
–
–
L520-4 37340
–
L520-6 37342
–
L521-4 37344
–
L521-6 37346
FACE WIDTH = 1.750"
14
–
–
–
–
–
–
–
L522-4 37348
–
L522-6 37350
FACE WIDTH = 2.000"
15
–
–
–
–
–
–
–
L523-4 37352
–
L523-6 37354
FACE WIDTH = 3.000"
15
–
–
–
–
–
–
.312
.625
.750
1.000
PITCH DIA
OF GEAR
(D)
GEAR
CENTER LINE
TO BACK OF RACK
B+D
2
FACE
WIDTH
OVERALL
THICKNESS
LENGTH
PITCH LINE
TO BACK
(B)
4
3
Alterations — 152
Horsepower Ratings — 138
Lubrication — 152
Materials — 153
.325
.250
.417
.525
.625
.833
4
6
DIAMETRAL PITCH
1.250
1.050
4
6
DIAMETRAL PITCH
1.500
REFERENCE PAGES
.208
–
–
–
.500
TOLERANCE
+ 1.00 – .000
+ .000 – .002
+ .000 – .003
+ .000 – .004
+ .000 – .006
.156
2
4
8,9
6
16 DIAMETRAL PITCH
.375
LENGTH
GP586-1 53899
–
–
–
–
–
–
G586-2 12724 L501-2 12726
FACE WIDTH = .188"
GP583-1 53900
–
–
–
–
–
–
G583-2 12720 L503-2 12728
–
–
G583-4 12722 L503-4 12730
FACE WIDTH = .250"
.250
WIDTH
6
1
2
6,7
4
24 DIAMETRAL PITCH
.188
PITCH LINE
TO BACK
(B)
.104
1.500
1.250
1.167
4
6
–
–
–
–
L509-2 12736
–
L509-4 12738
–
L509-6 12740
*FACE WIDTH = .313"
G576-2 12712 L510-2 12742
G576-4 12714 L510-4 12744
–
–
L512-4 12746
–
–
L512-6 12748
FACE WIDTH = .750"
–
–
L524-4 37356
L524-6 37358
*Face Width of L512-4 and L512-6 = 1/2".
Gear Catalog
23
INTERNAL GEARS
141/2° PRESSURE ANGLE
48 THROUGH 16 DIAMETRAL PITCH
BRASS
(Will not operate with 20° spurs)
ORDER BY CATALOG NUMBER
OR ITEM CODE
No. of
Teeth
Pitch
Dia.
O.D.
I.D.
Catalog
Number
1.500
2.000
2.750
3.750
.986
1.486
1.986
2.986
G632
G633
G635
G637
2.000
2.750
3.750
4.750
6.750
1.480
1.980
2.980
3.980
5.980
G664
G666
G668
G669
G670
2.250
2.750
3.750
4.750
6.750
1.474
1.974
2.974
3.974
5.974
G675
G677
G679
G680
G681
2.750
3.750
4.750
6.750
1.962
2.962
3.962
5.962
G689
G691
G692
G693
Item
Code
48
DIAMETRAL PITCH
48
72
96
144
1.000
1.500
2.000
3.000
FACE = .125"
12066
12068
12070
12072
32
DIAMETRAL PITCH
48
64
96
128
192
FACE
1.500
2.000
3.000
4.000
6.000
FACE = .188"
12056
12058
12060
12062
12064
24
DIAMETRAL PITCH
PITCH
DIA.
OUTSIDE
DIA.
INSIDE
DIA.
36
48
72
96
144
1.500
2.000
3.000
4.000
6.000
FACE = .250"
12046
12048
12050
12052
12054
16
DIAMETRAL PITCH
STANDARD TOLERANCES
DIMENSION
48 Pitch
I.D.
32 Pitch
24 Pitch
16 Pitch
O.D.
All
All
All
All
All
TOLERANCE
+.004 – .000
+.005 – .000
+.006 – .000
+.008 – .000
+.001 + .003
32
48
64
96
2.000
3.000
4.000
6.000
FACE = .313"
PINION
PITCH DIA.
(d)
CENTER DISTANCE
GEAR
PITCH DIA.
(D)
CENTER = D – d
DISTANCE
2
NOTE: The difference in tooth numbers between Gear and Pinion
should not be less than 15.
24
Gear Catalog
12038
12040
12042
12044
SPUR GEARS
64 AND 48 DIAMETRAL PITCH
DELRIN AND BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
153
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .033"
Overall Length = .125" + Hub Proj.
64
DIAMETRAL PITCH
BRASS
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
16
18
20
24
28
32
36
40
44
48
52
56
60
64
72
80
88
96
112
128
144
160
192
.250
.281
.312
.375
.438
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.125
1.250
1.375
1.500
1.750
2.000
2.250
2.500
3.000
.125
.1875
.250
.3125
.19
.22
.25
.28
.34
.38
.44
.44
.50
.50
.56
.56
.62
.62
.69
.69
.75
.75
.81
.88
.75
.75
.88
.19
.25
A
.25
.31
C
Y6416
Y6418
Y6420
Y6424
Y6428
Y6432
Y6436
Y6440
Y6444
Y6448
Y6452
Y6456
Y6460
Y6464
Y6472
Y6480
Y6488
Y6496
Y64112
Y64128
Y64144
Y64160
Y64192
09482
09484
09486
09488
09490
09492
09494
09496
09498
09500
09502
09504
09506
09508
09510
09512
09514
09516
09518
09520
09522
09524
09526
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH
MOLDED DELRIN
48 D.P.
64 D.P.
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
TOLERANCE
±.0005
±1/32
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
42
.375
.396
.417
.438
.458
.479
.500
.521
.542
.562
.583
.604
.625
.646
.667
.688
.708
.729
.750
.771
.792
.813
.833
.875
.31
.34
.38
.1562
.41
.25
.45
.48
.50
.1875
.55
A
.25
YP4818
YP4819
YP4820
YP4821
YP4822
YP4823
YP4824
YP4825
YP4826
YP4827
YP4828
YP4829
YP4830
YP4831
YP4832
YP4833
YP4834
YP4835
YP4836
YP4837
YP4838
YP4839
YP4840
YP4842
53902
53903
53904
53905
53906
53907
53908
53909
53910
53911
53912
53913
53914
53915
53916
53917
53918
53919
53920
53921
53922
53923
53924
53925
(continued next page)
Gear Catalog
25
SPUR GEARS
48 DIAMETRAL PITCH
DELRIN
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
153
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew†
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH
MOLDED DELRIN
STANDARD TOLERANCES*
DIMENSION
BORE
TOLERANCE
All
+.001 – .000
*Gears with Brass Inserts only.
48 D.P.
REFERENCE PAGES
Alterations — 152
Materials — 153
†All YPB gears have setscrews.
44
45
48
52
54
56
60
64
66
72
80
84
96
100
108
120
.917
.938
1.000
1.083
1.125
1.168
1.250
1.333
1.375
1.500
1.667
1.750
2.000
2.083
2.250
2.500
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
42
44
45
48
52
54
56
60
64
66
72
80
84
96
100
108
120
.375
.396
.417
.438
.458
.479
.500
.521
.542
.562
.583
.604
.625
.646
.667
.688
.708
.729
.750
.771
.792
.813
.833
.875
.917
.938
1.000
1.083
1.125
1.168
1.250
1.333
1.375
1.500
1.667
1.750
2.000
2.083
2.250
2.500
YP4844
YP4845
YP4848
YP4852
YP4854
YP4856
YP4860
YP4864
.250
.61
.25
B
YP4866
YP4872
YP4880
YP4884
YP4896
YP48100
YP48108
YP48120
MOLDED DELRIN WITH BRASS INSERTS
.188
.55
.31
.34
.125
.38
.40
.45
.48
.50
A
.188
.55
.250
.25
.61
(continued next page)
26
Gear Catalog
B
YPB4818
YPB4819
YPB4820
YPB4821
YPB4822
YPB4823
YPB4824
YPB4825
YPB4826
YPB4827
YPB4828
YPB4829
YPB4830
YPB4831
YPB4832
YPB4833
YPB4834
YPB4835
YPB4836
YPB4837
YPB4838
YPB4839
YPB4840
YPB4842
YPB4844
YPB4845
YPB4848
YPB4852
YPB4854
YPB4856
YPB4860
YPB4864
YPB4866
YPB4872
YPB4880
YPB4884
YPB4896
YPB48100
YPB48108
YPB48120
53926
53927
53928
53929
53930
53931
53932
53933
53934
53935
53936
53937
53938
53939
53940
53941
53942
53943
53944
53945
53946
53947
53948
53949
53950
53951
53952
53953
53954
53955
53956
53957
53958
53959
53960
53961
53962
53963
53964
53965
53966
53967
53968
53969
53970
53971
53972
53973
53974
53975
53976
53977
53978
53979
53980
53981
SPUR GEARS
48 AND 32 DIAMETRAL PITCH
DELRIN AND BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
153
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH
BRASS
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
12
15
18
21
24
27
30
36
42
48
54
60
66
72
84
96
120
144
192
.250
.312
.375
.438
.500
.562
.625
.750
.875
1.000
1.125
1.250
1.375
1.500
1.750
2.000
2.500
3.000
4.000
.125
.1875
.250
.3125
.18
.22
.28
.35
.38
.44
.44
.50
.57
.63
.69
.69
.75
.75
.82
.88
.75
.88
1.00
.19
.25
A
.25
.31
C
Y4812
Y4815
Y4818
Y4821
Y4824
Y4827
Y4830
Y4836
Y4842
Y4848
Y4854
Y4860
Y4866
Y4872
Y4884
Y4896
Y48120
Y48144
Y48192
09444
09446
09448
09450
09452
09454
09456
09458
09460
09462
09464
09466
09468
09470
09472
09474
09476
09478
09480
Face = .188"
Outside Dia. = Pitch Dia. + .062"
Overall Length = .188" + Hub Proj.
32
DIAMETRAL PITCH
MOLDED DELRIN
STANDARD TOLERANCES*
DIMENSION
BORE
All
HUB DIA.
All
TOLERANCE
±.0005
±1/32
*Brass only.
48 D.P.
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
32 D.P.
12
14
15
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
48
52
56
64
72
80
96
.375
.438
.469
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.062
1.125
1.187
1.250
1.312
1.375
1.500
1.625
1.750
2.000
2.250
2.500
3.000
.1562
.28
.31
.31
.31
.34
.47
A
.50
.1875
.250
.56
.50
.56
.63
.61
.31
.31
.63
B
.67
.3125
.31
.81
YP3212
YP3214
YP3215
YP3216
YP3218
YP3220
YP3222
YP3224
YP3226
YP3228
YP3230
YP3232
YP3234
YP3236
YP3238
YP3240
YP3242
YP3244
YP3248
YP3252
YP3256
YP3264
YP3272
YP3280
YP3296
53982
53983
53984
53985
53986
53987
53988
53989
53990
53991
53992
53993
53994
53995
53996
53997
53998
53999
54000
54001
54002
54003
54004
54005
54006
(continued next page)
Gear Catalog
27
SPUR GEARS
32 DIAMETRAL PITCH
DELRIN AND BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew†
Catalog
Item
Number
Code
Style
See
Page
153
Face = .188"
Outside Dia. = Pitch Dia. + .062"
Overall Length = .188" + Hub Proj.
32
DIAMETRAL PITCH
MOLDED DELRIN with BRASS INSERTS
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
BORE
HUB
DIA.
OVERALL
LENGTH
32 D.P.
STANDARD TOLERANCES
DIMENSION
TOLERANCE
Brass
BORE
All
± .0005
HUB. DIA.
All
± 1/32
Delrin with Brass Inserts
BORE
All
+ .001 – .000
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
†All YPB gears have
setscrew and spot drill.
28
Gear Catalog
12
14
15
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
48
52
56
64
72
80
96
.375
.438
.469
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.062
1.125
1.187
1.250
1.312
1.375
1.500
1.625
1.750
2.000
2.250
2.500
3.000
12
14
16
18
20
24
28
32
36
40
48
56
64
72
80
96
112
128
160
.375
.438
.500
.562
.625
.750
.875
1.000
1.125
1.250
1.500
1.750
2.000
2.250
2.500
3.000
3.500
4.000
5.000
.125
.1875
.250
.3125
.125
.1875
.250
.3125
.28
.31
.31
.34
.34
.47
.50
.50
.56
.50
.56
.63
.31
.61
.61
.61
.61
.61
.61
.63
.67
.67
.67
.81
.81
.81
BRASS
.28
.34
.40
.43
.47
.53
.59
.66
.72
.72
.78
.84
.90
.88
.88
1.00
1.00
1.00
1.00
A
B
.25
.25
A
.25
.25
.31
C
YPB3212
YPB3214
YPB3215
YPB3216
YPB3218
YPB3220
YPB3222
YPB3224
YPB3226
YPB3228
YPB3230
YPB3232
YPB3234
YPB3236
YPB3238
YPB3240
YPB3242
YPB3244
YPB3248
YPB3252
YPB3256
YPB3264
YPB3272
YPB3280
YPB3296
54007
54008
54009
54010
54011
54012
54013
54014
54015
54016
54017
54018
54019
54020
54021
54022
54023
54024
54025
54026
54027
54028
54029
54030
54031
Y3212
Y3214
Y3216
Y3218
Y3220
Y3224
Y3228
Y3232
Y3236
Y3240
Y3248
Y3256
Y3264
Y3272
Y3280
Y3296
Y32112
Y32128
Y32160
09406
09408
09410
09412
09414
09416
09418
09420
09422
09424
09426
09428
09430
09432
09434
09436
09438
09440
09442
SPUR GEARS
24 DIAMETRAL PITCH
DELRIN
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
153
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew†
Catalog
Item
Number
Code
Face = .250"
Outside Dia. = Pitch Dia. + .083"
Overall Length = .250" + Hub Proj.
24
DIAMETRAL PITCH
MOLDED DELRIN
STANDARD TOLERANCES
DIMENSION
BORE
All
*Gears with Brass Inserts only.
24 D.P.
REFERENCE PAGES
Alterations — 152
Materials — 153
†All YPB gears have
setscrew and spot drill.
TOLERANCE
+.001 – .000
12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
30
32
33
34
36
39
40
42
44
45
48
50
52
54
56
60
.500
.583
.625
.667
.709
.750
.791
.833
.875
.917
.959
1.000
1.041
1.083
1.125
1.167
1.250
1.333
1.375
1.416
1.500
1.625
1.666
1.750
1.833
1.875
2.000
2.083
2.166
2.250
2.333
2.500
12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
30
32
33
34
36
39
40
42
.500
.583
.625
.667
.709
.750
.791
.833
.875
.917
.959
1.000
1.041
1.083
1.125
1.167
1.250
1.333
1.375
1.416
1.500
1.625
1.666
1.750
.38
.44
YP2412
YP2414
YP2415
.48
YP2416
YP2417
.188
A
YP2418
YP2419
.55
YP2420
YP2421
YP2422
YP2423
.63
YP2424
.61
YP2425
YP2426
YP2427
.63
.250
YP2428
.31
YP2430
YP2432
.61
YP2433
YP2434
.63
YP2436
B
YP2439
YP2440
YP2442
YP2444
YP2445
.313
.67
YP2448
YP2450
YP2452
YP2454
YP2456
YP2460
MOLDED DELRIN WITH BRASS INSERTS
.38
.44
.48
.188
A
.55
.31
.63
.61
.250
.63
B
.61
.63
.313
.67
YPB2412
YPB2414
YPB2415
YPB2416
YPB2417
YPB2418
YPB2419
YPB2420
YPB2421
YPB2422
YPB2423
YPB2424
YPB2425
YPB2426
YPB2427
YPB2428
YPB2430
YPB2432
YPB2433
YPB2434
YPB2436
YPB2439
YPB2440
YPB2442
54032
54033
54034
54035
54036
54037
54038
54039
54040
54041
54042
54043
54044
54045
54046
54047
54048
54049
54050
54051
54052
54053
54054
54055
54056
54057
54058
54059
54060
54061
54062
54063
54064
54065
54066
54067
54068
54069
54070
54071
54072
54073
54074
54075
54076
54077
54078
54079
54080
54081
54082
54083
54084
54085
54086
54087
(continued next page)
Gear Catalog
29
SPUR GEARS
24 AND 20 DIAMETRAL PITCH
DELRIN, BRASS, STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .250"
Outside Dia. = Pitch Dia. + .083"
DIAMETRAL PITCH
Overall Length = .250" + Hub Proj.
MOLDED DELRIN WITH BRASS INSERTS
44
1.833
YPB2444 54088
–
–
45
1.875
YPB2445 54089
–
–
48
2.000
YPB2448 54090
–
–
50
2.083
YPB2450 54091
–
–
.3125
.67
.31
B
52
2.166
YPB2452 54092
–
–
54
2.250
YPB2454 54093
–
–
56
2.333
YPB2456 54094
–
–
60
2.500
YPB2460 54095
–
–
BRASS
12
.500
.38
Y2412
09372
–
–
15
.625
.50
Y2415
09374
–
–
.1875
.25
18
.750
.54
Y2418
09376
–
–
21
.875
.60
Y2421
09378
–
–
A
24
1.000
.66
Y2424
09380
–
–
27
1.125
.73
Y2427
09382
–
–
.250
.25
30
1.250
.73
Y2430
09384
–
–
36
1.500
.79
Y2436
09386
–
–
42
1.750
.86
.25
Y2442
09388
–
–
48
2.000
.92
Y2448
09390
–
–
.3125
54
2.250
.88
.31
Y2454
09392
–
–
60
2.500
.88
Y2460
09394
–
–
72
3.000
Y2472
09396
–
–
84
3.500
.31
C Y2484
09398
–
–
96
4.000
.375
1.00
Y2496
09400
–
–
120
5.000
Y24120 09402
–
–
.38
144
6.000
Y24144 09404
–
–
24
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
TOLERANCE
Brass, Steel and Cast Iron
BORE
All
± .0005
HUB. DIA.
All
± 1/32
Delrin with Brass Inserts
BORE
All
+ .001 – .000
20 D.P.
24 D.P.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 46
Lubrication — 152
Materials — 153
Selection Procedure — 37
†YPB gears have one setscrew, no keyway.
*5/16" bore have #35 (.110) drilled hole
through one wall, no keyway.
3/8" bore have one setscrew.
No keyway.
1/2" bore and larger have standard
keyway at 90° to setscrew.
See Page 153.
30
Gear Catalog
Face = .500"
Outside Dia. = Pitch Dia. + .100"
Overall Length = .500" + Hub Proj.
20
DIAMETRAL PITCH
STEEL
12
14
15
16
18
20
24
25
30
35
.600
.700
.750
.800
.900
1.000
1.200
1.250
1.500
1.750
40
2.000
.500
.625
.750
1.72
45
50
60
70
2.250
2.500
3.000
3.500
.500
1.97
1.62
2.12
2.38
80
84
90
100
120
140
160
180
200
4.000
4.200
4.500
5.000
6.000
7.000
8.000
9.000
10.000
.625
1.38
.625
1.50
.625
1.75
.3125
.375
.500
.46
.56
.60
.66
.74
.84
.92
.97
1.22
1.47
YA12
YA14
YA15
.44
YA16
YA18
YA20
YA24
.44
A YA25
YA30
.50
YA35
YA40
.50
–
–
YA45
YA50A
.50
YA60A
YA70A
CAST IRON
C YA80
.62
B YA84
YA90
C YA100
YA120
.62
YA140
D YA160
YA180
.75
YA200
.44
09892
09894
09896
09898
09900
09902
09914
09904
09906
09908
09910
–
–
09912
10548
10550
10552
YA12-5/16*
YA14-5/16*
YA15-3/8*
YA16-3/8*
YA18-3/8*
YA20-1/2*
YA24-1/2*
YA25-1/2*
YA30-1/2*
YA35-1/2*
YA40-1/2*
YA40-5/8*
YA40-3/4*
–
–
–
–
46128
46129
46130
46131
46132
46133
46134
46135
46136
46137
46138
46139
46140
–
–
–
–
10554
10556
10558
10560
10562
10564
10566
10568
10570
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
SPUR GEARS
16 AND 12 DIAMETRAL PITCH
STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .750"
Outside Dia. = Pitch Dia. + .125"
Overall Length = .750" + Hub Proj.
16
DIAMETRAL PITCH
STEEL
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
12
14
.750
.875
.375
.56
.69
.50
15
.938
.375
.500
.75
.50
16
18
20
1.000
1.125
1.250
.500
.81
.94
1.05
.50
24
1.500
1.20
.50
28
1.750
1.45
.50
30
1.875
1.58
.50
32
2.000
36
40
48
56
60
64
72
80
2.250
2.500
3.000
3.500
3.750
4.000
4.500
5.000
96
128
144
160
192
6.000
8.000
9.000
10.000
12.000
.625
.625
.750
.625
.750
.625
.750
.875
.625
.750
.875
1.000
.625
.750
YB12
YB14
YB15
–
YB16
YB18
YB20
YB24
–
YB28
–
YB30
–
–
YB32
–
–
–
YB36
YB40
YB48A
YB56A
YB60A
YB64A
YB72A
YB80A
.50
A
1.70
.50
1.95
2.20
2.00
2.50
2.75
2.88
3.38
3.88
.50
.62
.75
09916
09918
09920
–
09922
09924
09926
09928
–
09930
–
09932
–
–
09934
–
–
–
09936
09938
10572
10574
10576
10578
10580
10582
YB12-3/8
YB14-3/8
YB15-3/8
YB15-1/2
YB16-1/2
YB18-1/2
YB20-5/8
YB24-5/8
YB24-3/4
YB28-5/8
YB28-3/4
YB30-5/8
YB30-3/4
YB30-7/8
YB32-5/8
YB32-3/4
YB32-7/8
YB32-1
–
–
–
–
–
–
–
–
46141
46142
45991
46143
46144
46145
46146
46147
46148
46149
46150
46151
46152
46153
46154
46155
46156
46157
–
–
–
–
–
–
–
–
CAST IRON
16 D.P.
12 D.P.
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
TOLERANCE
±.0005
±1/32
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 46, 47
Lubrication — 152
Materials — 153
Selection Procedure — 37
†3/8" bore have one setscrew.
No keyway.
YB15-1/2 and larger have standard
keyway at 90° to setscrew.
See page 153.
*YD12-1/2 has one setscrew.
No keyway.
‡YD13-5/8 has one setscrew.
No keyway.
YD14-5/8 bore and larger have standard
keyway at 90° to setscrew.
.750
1.75
2.00
2.00
.75
.875
2.00
.75
1.00
.75
.83
.92
.99
1.07
1.24
1.32
.62
1.40
.62
1.65
.62
1.99
.62
2.15
1.94
2.44
2.88
3.38
.62
.88
D
12
DIAMETRAL PITCH
YB96
10584
–
–
YB128 10588
–
–
YB144 10590
–
–
YB160 10592
–
–
YB192 10594
–
–
Face = 1.000"
Outside Dia. = Pitch Dia. + .167"
Overall Length = 1.000" + Hub Proj.
STEEL
12
13
14
15
16
18
20
1.000
1.083
1.167
1.250
1.333
1.500
1.667
.500
21
1.750
24
2.000
28
2.333
.750
.875
.750
.875
1.000
.750
.875
1.000
30
36
42
48
54
2.500
3.000
3.500
4.000
4.500
.625
.750
.750
.875
.62
.62
.88
A
YD12
YD13
YD14
YD15
YD16
YD18
YD20
YD21
–
YD24
–
–
YD28
–
–
YD30
YD36A
YD42A
YD48A
YD54A
09940
09942
09944
09946
09948
09950
09952
09954
–
09956
–
–
09958
–
–
09960
10596
10598
10600
10602
Gear Catalog
YD12-1/2*
YD13-5/8‡
YD14-5/8
YD15-5/8
YD16-5/8
YD18-3/4
YD20-3/4
YD21-3/4
YD21-7/8
YD24-3/4
YD24-7/8
YD24-1
YD28-3/4
YD28-7/8
YD28-1
–
–
–
–
–
46158
46159
46160
46161
46162
46163
46164
46165
46166
46167
46168
46169
46170
46171
46172
–
–
–
–
–
31
SPUR GEARS
12 AND 10 DIAMETRAL PITCH
CAST IRON AND STEEL
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
DIAMETRAL PITCH
FACE
HUB
PROJ.
KEYWAY
5.000
5.500
6.000
7.000
8.000
9.000
10.000
11.000
12.000
14.000
16.000
18.000
.875
2.12
2.25
2.25
1.000
2.50
2.75
10
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
12 D.P.
10 D.P.
DIAMETRAL PITCH
12
14
15
16
1.200
1.400
1.500
1.600
18
1.800
20
2.000
24
2.400
25
2.500
28
2.800
30
35
40
45
48
50
3.000
3.500
4.000
4.500
4.800
5.000
55
60
70
80
90
100
120
140
160
200
5.500
6.000
7.000
8.000
9.000
10.000
12.000
14.000
16.000
20.000
.625
.750
.92
1.12
1.22
1.32
.750
.875
.875
1.000
.875
1.000
.875
1.000
.875
1.000
1.42
.875
2.00
2.50
2.95
3.45
3.75
3.95
1.000
1.62
2.02
2.12
2.42
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
TOLERANCE
±.0005
±1/32
1.000
1.125
2.50
3.00
3.25
CAST IRON
B
YD60
10604
–
–
YD66
10606
–
–
.88
YD72
10608
–
–
YD84
10610
–
–
YD96
10612
–
–
YD108 10614
–
–
.88
D
YD120 10616
–
–
YD132 10618
–
–
YD144 10620
–
–
1.00
YD168 10622
–
–
YD192 10624
–
–
YD216 10626
–
–
Face = 1.250"
Outside Dia. = Pitch Dia. + .200"
Overall Length = 1.250" + Hub Proj.
STEEL
YF12
09962 YF12-5/8
46173
.62
YF14
09964 YF14-5/8
46174
YF15
09966 YF15-3/4
46175
.62
YF16
09968 YF16-3/4
46176
YF18
09970
YF18-3/4
46177
.62
–
–
YF18-7/8
46178
YF20
09972 YF20-7/8
46179
.62
–
–
YF20-1
46180
A
YF24
09974 YF24-7/8
46181
.62
–
–
YF24-1
46182
YF25
09976 YF25-7/8
46183
.62
–
–
YF25-1
46184
YF28
09978
YF28-7/8
46185
.62
–
–
YF28-1
46186
YF30A 10630
–
–
.88
YF35A 10632
–
–
YF40A 10634
–
–
YF45A 10636
–
–
.88
YF48A 10638
–
–
YF50A 10640
–
–
CAST IRON
YF55
10642
–
–
B
YF60
10644
–
–
1.00
YF70
10646
–
–
YF80
10648
–
–
YF90
10650
–
–
D
YF100 10652
–
–
YF120 10656
–
–
1.12
YF140 10658
–
–
YF160 10660
–
–
1.25
YF200B 10664
–
–
†All gears have standard keyway at 90° to setscrew. See Page 153.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 47, 48
Lubrication — 152
Materials — 153
Selection Procedure — 37
32
Gear Catalog
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 1.000"
Outside Dia. = Pitch Dia. + .166"
Overall Length = 1.000" + Hub Proj.
12
60
66
72
84
96
108
120
132
144
168
192
216
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
SPUR GEARS
8 AND 6 DIAMETRAL PITCH
STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 1.500"
Outside Dia. = Pitch Dia. + .250"
Overall Length = 1.500" + Hub Proj.
8
DIAMETRAL PITCH
STEEL
FACE
HUB
PROJ.
12
14
1.500
1.750
.750
1.12
1.31
15
1.875
1.43
16
2.000
18
2.250
20
2.500
22
2.750
24
3.000
28
32
36
3.500
4.000
4.500
.750
.875
.875
1.000
.875
1.000
1.125
.875
1.000
1.125
.875
1.000
1.125
.875
1.000
1.125
.875
40
44
48
56
60
64
72
80
88
96
112
120
128
5.000
5.500
6.000
7.000
7.500
8.000
9.000
10.000
11.000
12.000
14.000
15.000
16.000
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
8 D.P.
6 D.P.
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
TOLERANCE
±.0005
±1/32
1.56
1.81
2.06
2.31
2.56
1.000
3.06
3.00
3.50
1.000
2.50
3.00
1.125
3.25
6
DIAMETRAL PITCH
YH12
09980 YH12-3/4
46187
YH14
09982 YH14-3/4
46188
YH15
09984 YH15-3/4
46189
.75
–
–
YH15-7/8
46190
YH16
09986 YH16-7/8
46191
.88
–
–
YH16-1
46192
YH18
09988 YH18-7/8
46193
.88
A
–
–
YH18-1
46194
–
–
YH18-1-1/8 46195
YH20
09990 YH20-7/8
46196
.88
–
–
YH20-1
46197
–
–
YH20-1-1/8 46198
YH22
09992 YH22-7/8
46199
.88
–
–
YH22-1
46200
–
–
YH22-1-1/8 46201
YH24
09994 YH24-7/8
46202
.88
–
–
YH24-1
46203
–
–
YH24-1-1/8 46204
.88
YH28
09996
–
–
YH32C 10666
–
–
.88
YH36C 10668
–
–
CAST IRON
YH40B 10670
–
–
B
YH44B 10672
–
–
YH48B 10674
–
–
1.00
YH56B 10676
–
–
C
YH60
10678
–
–
YH64B 10680
–
–
YH72B 10682
–
–
YH80B 10684
–
–
D
YH88B 10686
–
–
YH96B 10688
–
–
1.25
YH112B 10690
–
–
YH120 10692
–
–
YH128B 10694
–
–
Face = 2.000"
Outside Dia. = Pitch Dia. + .333"
Overall Length = 2.000" + Hub Proj.
.75
STEEL
12
2.000
14
2.333
15
2.500
1.000
1.000
1.125
1.000
1.125
1.1875
1.250
1.46
.88
1.79
.88
1.96
.88
A
YJ12
YJ14
–
YJ15
–
–
–
09998
10000
–
10002
–
–
–
YJ12-1
YJ14-1
YJ14-1-1/8
YJ15-1
YJ15-1-1/8
YJ15-1-3/16
YJ15-1-1/4
46205
46206
46207
46208
46209
46210
46211
†All gears have standard keyway at 90° to setscrew. See Page 153.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 48, 49
Lubrication — 152
Materials — 153
Selection Procedure — 37
Gear Catalog
33
SPUR GEARS
6 AND 5 DIAMETRAL PITCH
STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 153 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 2.000"
Outside Dia. = Pitch Dia. + .333"
Overall Length = 2.000" + Hub Proj.
6
DIAMETRAL PITCH
STEEL
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
6 D.P.
5 D.P.
16
2.667
18
3.000
21
3.500
24
27
30
4.000
4.500
5.000
33
36
42
48
54
60
66
72
84
96
108
120
5.500
6.000
7.000
8.000
9.000
10.000
11.000
12.000
14.000
16.000
18.000
20.000
1.000
1.125
1.1875
1.250
1.000
1.125
1.1875
1.250
1.000
1.125
1.1875
1.250
2.13
2.46
2.96
1.125
3.00
3.50
4.00
1.125
3.00
3.50
1.250
3.50
1.250
4.00
1.375
4.50
5
DIAMETRAL PITCH
YJ16
10004 YJ16-1
46212
–
–
YJ16-1-1/8 46213
–
–
YJ16-1-3/16 46214
–
–
YJ16-1-1/4 46215
YJ18
10006 YJ18-1
46216
–
–
YJ18-1-1/8 46217
.88
–
–
YJ18-1-3/16 46218
–
–
YJ18-1-1/4 46219
A
YJ21
10008 YJ21-1
46220
–
–
YJ21-1-1/8 46221
.88
–
–
YJ21-1-3/16 46222
–
–
YJ21-1-1/4 46223
YJ24A
10704
–
–
.88
YJ27A
10706
–
–
YJ30C
10708
–
–
CAST IRON
B
YJ33B
10710
–
–
1.50
A
YJ36B
10712
–
–
YJ42B
10714
–
–
1.50
B
YJ48B
10716
–
–
YJ54B
10718
–
–
YJ60B
10720
–
–
C
YJ66B
10722
–
–
YJ72B
10724
–
–
1.50
YJ84B
10726
–
–
D
YJ96B
10728
–
–
YJ108B 10730
–
–
1.50
YJ120B 10732
–
–
Face = 2.500"
Outside Dia. = Pitch Dia. + .400"
Overall Length = 2.500" + Hub Proj.
.88
STEEL
STANDARD TOLERANCES
DIMENSION
BORE
All
HUB DIA.
All
TOLERANCE
±.0005
±1/32
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 49, 50
Lubrication — 152
Materials — 153
Selection Procedure — 37
†All gears have standard keyway at 90° to setscrew.
See Page 153.
34
Gear Catalog
12
14
15
16
18
20
2.400
2.800
3.000
3.200
3.600
4.000
24
25
28
30
35
40
45
50
60
70
80
100
110
120
140
160
180
4.800
5.000
5.600
6.000
7.000
8.000
9.000
10.000
12.000
14.000
16.000
20.000
22.000
24.000
28.000
32.000
36.000
1.125
1.78
2.18
2.38
2.58
2.98
3.38
1.125
3.75
1.250
3.75
4.00
1.375
4.38
1.500
4.75
5.00
5.00
5.00
5.50
1.625
YK12
YK14
YK15
.88
A
YK16
YK18
YK20
CAST IRON
YK24
YK25B
1.25
A
YK28
YK30B
YK35B
B
YK40B
1.25
YK45B
C
YK50
YK60
1.50
YK70B
YK80B
YK100
1.75
D
YK110
YK120
YK140B
2.00
YK160B
YK180B
10010
10012
10014
10016
10018
10020
–
–
–
–
–
–
–
–
–
–
–
–
10738
10740
10742
10744
10746
10748
10750
10752
10754
10756
10758
10762
10764
10766
10768
10770
10772
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
RACK
64 THROUGH 4 DIAMETRAL PITCH
BRASS AND STEEL
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Overall
Thickness
Pitch Line Nominal
Mating
to Back
Length Spur Gear
(B)
(Feet)
Page No.
Steel
Catalog Item
Number Code
Brass
Catalog Item
Number Code
64
DIAMETRAL PITCH
.125
.109
FACE WIDTH - .125”
2
25
–
–
2
25 – 27
–
–
27 – 28
–
–
–
–
29 – 30
–
–
–
–
Y64-2
12710
48
DIAMETRAL PITCH
.125
.104
FACE WIDTH - .125”
Y48-2
12708
32
DIAMETRAL PITCH
.188
PITCH LINE
TO BACK
(B)
.156
FACE WIDTH - .188”
2
4
Y32-2
Y32-4
12704
12706
24
WIDTH
DIAMETRAL PITCH
.250
.208
FACE WIDTH - .250”
2
4
Y24-2
Y24-4
12700
12702
20
DIAMETRAL PITCH
OVERALL
THICKNESS
LENGTH
.500
.450
FACE WIDTH - .500”
4
6
30
L2020-4 12758
L2020-6 12760
31
L2016-4 12762
L2016-6 12764
31 – 32
L2012-4 37320
L2012-6 37322
32
L2010-4 37316
L2010-6 37318
33
L208-4
L208-6
37312
37314
33 – 34
L206-4
L206-6
37308
37310
34
L205-4
L205-6
37304
37306
–
L204-4
L204-6
37300
37302
–
–
–
–
16
DIAMETRAL PITCH
.750
–
–
–
–
12
STANDARD TOLERANCES
DIMENSION
LENGTH †
All
1/8 – 3/4
FACE
1 – 1-1/2
WIDTH
2 – 2-1/2
3-1/2
.688
FACE WIDTH - .750”
4
6
TOLERANCE
+1.000 – .000
+.000 – .002
+.000 – .003
+.000 – .004
+.000 – .006
†Ends not machined. Tolerance allows for cutting and
matching.
DIAMETRAL PITCH
1.000
.917
FACE WIDTH - 1.000”
4
6
–
–
–
–
10
DIAMETRAL PITCH
1.250
1.150
FACE WIDTH - 1.250”
4
6
–
–
–
–
8
DIAMETRAL PITCH
1.500
1.375
FACE WIDTH - 1.500”
4
6
–
–
–
–
6
DIAMETRAL PITCH
PITCH DIA
OF GEAR
(D)
GEAR
CENTER LINE
TO BACK OF RACK
B+D
2
1.500
FACE
WIDTH
OVERALL
THICKNESS
LENGTH
1.333
FACE WIDTH - 2.000”
4
6
–
–
–
–
5
DIAMETRAL PITCH
PITCH LINE
TO BACK
(B)
1.500
1.300
FACE WIDTH - 2.500”
4
6
–
–
–
–
4
DIAMETRAL PITCH
REFERENCE PAGES
2.000
1.750
FACE WIDTH - 3.500”
4
6
–
–
–
–
Alterations — 152
Horsepower Ratings — 138
Lubrication — 152
Materials — 153
Gear Catalog
35
INTERNAL GEARS
64 THROUGH 24 DIAMETRAL PITCH
BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No. of
Teeth
Pitch
Dia.
O.D.
I.D.
DIAMETRAL PITCH
64
1.000
96
1.500
128
2.000
192
3.000
1.500
2.000
2.750
3.750
.980
1.480
1.980
2.980
FACE WIDTH - .125”
YI6464
12030
YI6496
12032
YI64128
12034
YI64192
12036
1.500
2.000
2.750
3.750
4.750
.974
1.474
1.974
2.974
3.974
FACE WIDTH - .125”
YI4848
12020
YI4872
12022
YI4896
12024
YI48144
12026
YI48192
12028
2.000
2.750
3.750
4.750
6.750
1.461
1.961
2.961
3.961
5.961
FACE WIDTH - .188”
YI3248
12010
YI3264
12012
YI3296
12014
YI32128
12016
YI32192
12018
2.250
2.750
3.750
4.750
6.750
1.450
1.950
2.950
3.950
5.950
FACE WIDTH - .250”
YI2436
12000
YI2448
12002
YI2472
12004
YI2496
12006
YI24144
12008
64
48
DIAMETRAL PITCH
48
1.000
72
1.500
96
2.000
144
3.000
192
4.000
32
FACE
PITCH
DIA.
OUTSIDE
DIA.
INSIDE
DIA.
DIAMETRAL PITCH
48
1.500
64
2.000
96
3.000
128
4.000
192
6.000
24
DIAMETRAL PITCH
36
1.500
48
2.000
72
3.000
96
4.000
144
6.000
Catalog
Number
Item
Code
NOTE: The difference in tooth numbers between Gear and Pinion should not be less than 12.
STANDARD TOLERANCES
DIMENSION
64 Pitch
48 Pitch
I.D.
32 Pitch
24 Pitch
O.D.
All
All
All
All
All
TOLERANCE
+.004 – .000
+.005 – .000
+.006 – .000
+.008 – .000
+.001 + .003
PINION
PITCH DIA.
(d)
CENTER DISTANCE
GEAR
PITCH DIA.
(D)
CENTER = D – d
DISTANCE
2
36
Gear Catalog
SPUR GEARS
Boston spur gears are designed to transmit motion or power between parallel
shafts. Configurations include spur, rack, pinion wire, stem pinions and internal gears; most with a selection of bores, keyways and setscrews. Styles
include plain, web, web with lightening holes or spoked. Change gears have
consecutive numbers of teeth for reduction uses.
Boston fine-pitch spur gears are available in Delrin and Brass. Configurations
include spur, rack, pinion wire and internal gears; most with a selection of
bores, keyways, and setscrews. Styles include plain, web with lightening
holes or spoked.
SELECTION PROCEDURE
SELECTION HINTS
1. Determine service factor.
a. Using application Classification Chart, pages 155,
156, determine service factor or
b. With knowledge of operating conditions and load
classification, select service factor from Table 1
below.
A. Select pinion having pitch diameter at least twice the
shaft diameter.
B. Pinion number of teeth should be greater than 16 for
14 1⁄2°PA and 13 for 20°PA to avoid excessive undercutting.
C. For tooth numbers or RPMs not on Chart, interpolation of
horsepower is adequate.
Design HP = Application Load X Service Factor (Table 1)
3. Select spur gear pinion with horsepower capacity equal to
(or greater than) design horsepower determined in Step 2.
141⁄2° Pressure Angle Spur Gears—Page 38 to Page 45.
20° Pressure Angle Spur Gears— Page 46 to Page 50.
4. Select a driven spur gear with a catalog rating equal to or
greater than the horsepower determined in Step 2. All ratings are predicated on gears properly lubricated and
maintained.
D. Pitchline velocities above 1000 FPM are not recommended for metallic spur gears. The Selection Chart reflects
this in the lack of ratings for larger numbers of teeth at
higher RPM’s. Ratings to the right of heavy line are not
recommended, as suggested maximum velocity
is exceeded, and should be used for interpolation
purposes only.
TABLE 1
Service
Factor
.8
1.0
1.25
1.50
1.75
2.0
Operating Conditions
Uniform — not more than 15 minutes in 2 hours.
Moderate Shock — not more than 15 minutes in 2 hours.
Uniform — not more than 10 hours per day.
Moderate Shock — not more than 10 hours per day.
Uniform — more than 10 hours per day.
Heavy Shock — not more than 15 minutes in 2 hours.
Moderate Shock — more than 10 hours per day.
Heavy Shock — not more than 10 hours per day.
Heavy Shock — more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require
the use of higher service factors. Consultation with factory is
recommended in these applications.
Gear Catalog
37
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
32 DIAMETRAL PITCH STEEL
25 RPM
50 RPM
100 RPM
141⁄2° PRESSURE ANGLE
200 RPM
300 RPM
3/16" FACE
600 RPM
900 RPM
REFERENCE PAGE 7.
1200 RPM
1800 RPM
3600 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
16
18
20
22
24
26
28
30
32
40
48
56
64
80
96
128
160
192
.003
7.4
.003
8.9
.004 10.2
.005 11.7
.01
13.0
.01
14.5
.01
15.9
.01
17.3
.01
18.9
.01
24.5
.01
29.9
.01
35.7
.02
41.4
.02
52.4
.02
62.6
.03
83.9
.04 106
.05 126
.24
.27
.30
.32
.34
.37
.39
.40
.43
.48
.52
.55
.58
4.2
4.7
5.2
5.7
6.0
6.4
6.8
7.0
7.4
8.4
9.0
9.7
10.2
.01
7.3
.01
8.8
.01 10.2
.01 11.6
.01 12.9
.01 14.4
.01 15.1
.01 17.0
.01 18.7
.02 24.2
.02 29.4
.03 35
.03 40.6
.04 51
.05 60.6
.06 80.6
.08 101
.09 119
.01
7.3
.01
8.7
.02 10.1
.02 11.4
.02 12.7
.02 14.1
.02 15.5
.03 16.7
.03 18.3
.04 23.6
.05 28.5
.05 33.8
.06 38.9
.08 48.5
.09 57.1
.12 74.6
.15 92.1
.17 107
24 DIAMETRAL PITCH STEEL
25 RPM
50 RPM
100 RPM
.02
.03
.03
.04
.04
.04
.05
.05
.06
.07
.09
.10
.11
.14
.16
.21
.25
.28
7.1
8.5
9.8
11.1
12.3
13.7
14.9
16.1
17.6
22.4
26.8
31.5
36
44.2
51.2
64.9
78.2
88.4
.03
.04
.05
.05
.06
.06
.07
.07
.08
.10
.12
.14
.16
.19
.22
.27
.32
.36
7.0
8.3
9.6
10.8
11.9
13.3
14.5
15.5
16.9
21.3
25.4
29.6
33.5
40.6
46.4
57.5
67.8
75.4
.06
.07
.08
.09
.10
.12
.12
.13
.14
.18
.21
.24
.26
.31
.34
.41
.46
.50
6.6
7.8
8.9
9.9
10.9
12.0
13.1
13.9
15.2
18.7
21.8
24.9
27.8
32.5
36.2
42.7
48.6
52.4
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
.09
.10
.12
.13
.14
.16
.17
.18
.20
.24
.27
.31
.34
.39
.42
.49
.54
.57
6.3
7.3
8.3
9.3
10.1
11.1
12.0
12.7
13.7
16.7
19.1
21.6
23.7
27.2
29.6
34
37.9
40.1
.11
.13
.15
.16
.18
.20
.21
.22
.24
.29
.32
.36
.39
.44
.48
.54
5.9
6.9
7.8
8.7
9.4
10.2
11.0
11.7
12.6
15
17
18.9
20.7
23.3
25.1
28.3
1/4" FACE
600 RPM
900 RPM
.15
.18
.20
.22
.24
.26
.27
.29
.31
.36
.40
.44
.47
.52
.55
5.4
6.1
6.9
7.6
8.3
8.9
9.5
10.0
10.7
12.5
13.9
15.3
16.5
18.2
19.2
REFERENCE PAGE 8.
1200 RPM
1800 RPM
3600 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P. Torque
H.P.
Torque
12
14
15
16
18
20
21
24
30
36
42
48
60
72
96
120
144
.004
.01
.01
.01
.01
.01
.01
.01
.02
.02
.02
.03
.04
.04
.06
.07
.09
.22
.28
.31
.33
.38
.42
.45
.50
.60
.68
.74
.80
.89
.96
.35
.43
.46
.49
.55
.61
.63
.69
.80
.89
.94
.99
6.1
7.5
8.0
8.6
9.7
10.6
11.0
12.0
13.9
15.5
16.5
17.4
10.9
14.2
15.8
17.5
20.9
24.3
26.1
30.7
40.7
51.2
60.7
70.4
90
109
147
185
219
.01
.01
.01
.01
.02
.02
.02
.02
.03
.04
.05
.05
.07
.08
.11
.14
.16
10.8
14.1
15.7
17.4
20.7
24.1
25.8
30.4
40.2
50.4
59.6
68.9
87.7
106
141
175
207
.02
10.7
.02
13.9
.02
15.5
.03
17.2
.03
20.4
.04
23.7
.04
25.4
.05
29.7
.06
39.2
.08
48.8
.09
59.5
.11
66.2
.13
83.3
.16
99.8
.21 130
.25 159
.29 185
.03
10.5
.04
13.6
.05
15.1
.05
16.7
.06
19.8
.07
22.9
.08
24.5
.09
28.5
.12
37.2
.15
46
.17
53.6
.19
61.3
.24
75.9
.28
89.5
.36 113
.43 135
.49 153
.05
.06
.07
.08
.09
.11
.11
.13
.17
.21
.24
.27
.33
.39
.48
.56
.62
10.3
13.3
14.7
16.2
19.2
22.1
23.6
27.5
35.5
43.5
50.3
57
69.6
81
100
118
131
.09
.12
.13
.14
.17
.19
.20
.23
.30
.36
.40
.45
.53
.60
.71
.80
.86
9.7
12.4
13.7
15
17.6
20.1
21.4
24.6
31.1
37.3
42.4
47.2
55.9
63.2
74.7
84.3
90.8
.13
.17
.18
.20
.23
.26
.28
.32
.40
.47
.52
.58
.67
.74
.85
.94
.99
9.2
11.6
12.8
14
16.3
18.5
19.6
22.3
27.7
32.7
36.6
40.3
46.6
51.8
59.5
65.7
69.6
.17
.21
.23
.25
.29
.33
.34
.39
.48
.55
.61
.67
.76
.84
.94
1.07
8.7
10.9
12
13.1
15.1
17.1
18.1
20.4
24.9
29.1
32.3
35.1
40
43.9
49.5
56.4
7.9
9.8
10.7
11.6
13.3
14.8
15.6
17.4
20.8
23.9
26
28
31.2
33.6
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
38
Gear Catalog
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
20 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
13
14
15
16
18
20
22
24
25
28
30
32
35
36
40
48
50
60
64
25 RPM
50 RPM
141⁄2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
3/8" FACE
600 RPM
900 RPM
REFERENCE PAGE 8.
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.01
.01
.01
.01
.01
.02
.02
.02
.02
.03
.03
.03
.03
.04
.04
.04
.05
.06
.06
.08
.08
.66
.70
.77
.84
.90
.97
1.08
1.18
1.26
1.33
1.38
1.47
1.52
1.59
1.66
1.68
1.75
11.6
12.2
13.4
14.7
15.8
16.9
18.9
20.6
22.1
23.3
24.0
25.7
26.6
27.8
29.1
29.3
30.7
21.6
23.5
26.9
30.7
34.2
37.8
45.1
52.4
59.5
66.3
70.5
81.2
87.8
96.3
107
110
124
151
158
193
209
.02
.02
.02
.02
.03
.03
.04
.04
.05
.05
.06
.06
.07
.08
.08
.09
.10
.12
.12
.15
.16
21.4
23.4
26.8
30.5
33.9
37.5
44.7
51.9
58.8
65.4
69.5
80
86.4
94.7
105
108
122
148
154
187
203
.03
.04
.04
.05
.05
.06
.07
.08
.09
.10
.11
.12
.13
.15
.16
.17
.19
.22
.23
.28
.30
21.2
23
26.4
30
33.4
36.8
43.8
50.8
57.5
63.8
67.7
77.7
83.7
91.6
101
104
117
141
146
176
190
.07
.07
.08
.09
.10
.11
.13
.15
.17
.19
.20
.23
.25
.27
.30
.31
.34
.41
.42
.50
.54
20 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
20.7
22.5
25.7
29.1
32.3
35.7
42.3
48.7
54.9
60.8
64.4
73.4
78.9
86
94.7
97.1
108
128
133
158
169
.10
.10
.12
.13
.15
.16
.19
.22
.25
.28
.29
.33
.36
.39
.42
.43
.48
.56
.58
.68
.73
20.2 .18 18.9
21.9 .19 20.5
25
.22 23.2
28.3 .25 26.1
31.4 .27 28.8
34.5 .30 31.6
40.8 .35 36.9
46.9 .40 42
52.7 .45 46.8
58
.49 51.1
61.4 .51 53.8
69.7 .57 60.3
74.6 .61 64
81
.66 69.1
88.9 .71 74.9
91
.73 76.4
101
.79 83.5
118
.91 95.4
122
.93 98
143
1.06 112
153
1.12 118
.25
.27
.31
.35
.38
.41
.48
.54
.60
.65
.68
.76
.80
.86
.92
.94
1.02
1.14
1.17
1.31
1.37
141⁄2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
17.8
19.2
21.6
24.2
26.6
29
33.7
38
42
45.6
47.9
53.2
56.1
60.2
64.7
65.8
71.2
80
81.7
91.6
96
.32
.34
.39
.43
.47
.51
.59
.66
.73
.78
.82
.91
.95
1.02
1.09
1.10
1.18
1.31
1.34
1.48
1.54
16.8
18
20.3
22.6
24.7
26.9
31
34.8
38.2
41.2
43.1
47.5
50
53.3
57
57.8
62.1
69.8
70.1
77.6
80.9
3/8" FACE
900 RPM
.43
.46
.51
.57
.62
.67
.76
.85
.92
.99
1.03
1.12
1.17
1.24
1.31
1.33
1.41
1.54
1.56
1.70
15.1
16.1
17.9
20
21.7
23.4
26.7
29.7
32.3
34.6
36
39.2
40.9
43.4
46
46.5
49.4
53.8
54.6
59.5
REFERENCE PAGE 9.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
70
72
80
84
90
96
100
112
120
140
144
160
180
200
.05
.06
.06
.07
.07
.07
.08
.09
.09
.11
.11
.13
.14
.15
137
140
158
166
177
189
196
222
237
273
281
317
353
388
.10
.11
.12
.13
.13
.14
.15
.17
.18
.20
.21
.23
.26
.28
132
136
152
159
169
180
186
210
223
255
262
294
324
354
.20
.20
.22
.23
.25
.26
.27
.30
.32
.36
.37
.41
.44
.48
123
126
141
147
155
164
170
189
200
225
230
256
278
300
.35
.35
.39
.40
.42
.44
.46
.50
.53
.58
.59
.64
.69
.73
109
111
123
127
133
140
144
158
166
183
186
203
217
230
.46
.47
.52
.53
.56
.58
.59
.65
.67
.73
.74
.80
.85
.89
97.5
99.4
108
112
117
122
125
136
141
153
156
168
178
187
.71
.72
.77
.79
.81
.84
.85
.91
.93
.99
1.00
1.06
1.10
1.13
74.2 .86
75.3 .87
80.7 .92
82.7 .94
85.4 .96
87.9 .98
89.5 1.00
95.5 1.05
98.1 1.07
104
105
111
115
119
60
60.6
64.3
65.5
67.2
68.8
69.7
73.6
75.1
.96
.97
1.02
1.03
3600 RPM
H.P. Torque
50.2
50.7
53.4
54.3
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
39
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
16 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
13
14
15
16
18
20
22
24
26
28
30
32
36
40
48
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 9 & 10.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.02
.02
.02
.03
.03
.03
.04
.04
.05
.05
.06
.07
.07
.08
.09
.10
.12
1.24
1.29
1.42
1.55
1.66
1.77
1.96
2.13
2.27
2.38
2.51
2.62
2.69
2.81
21.7
22.6
24.9
27.1
29.0
30.9
34.3
37.2
39.7
41.7
43.9
45.8
47.1
49.3
44.9
48.9
56.1
63.8
71.1
78.7
93.8
109
124
138
154
168
182
200
228
258
314
.04
.04
.04
.05
.06
.06
.07
.09
.10
.11
.12
.13
.14
.16
.18
.20
.24
44.5
48.5
55.6
63.2
70.3
77.8
99.6
107
122
135
151
165
179
196
223
251
304
.07
.08
.09
.10
.11
.12
.14
.17
.19
.21
.23
.25
.27
.30
.34
.38
.45
43.9
47.8
54.7
62
68.9
76.2
90.5
105
118
131
146
160
172
188
213
239
286
.14
.15
.17
.19
.21
.23
.27
.32
.36
.39
.43
.47
.51
.55
.62
.69
.81
16 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
42.7 .20
46.3 .21
52.9 .24
59.8 .28
66.4 .30
73.1 .33
86.5 .39
99
.45
112
.51
124
.56
137
.61
149
.66
160
.71
174
.77
196
.86
217
.95
257
1.11
41.5
44.9
51.2
57.8
63.9
70.3
82.8
94.9
106
117
129
140
149
162
181
200
232
.36
.39
.44
.50
.55
.60
.70
.79
.88
.96
1.04
1.12
1.19
1.28
1.40
1.52
1.73
38.3
41.2
46.7
52.4
57.6
63
73.4
83.2
92.3
100
110
118
125
134
147
160
181
.51
.54
.61
.68
.75
.82
.94
1.06
1.16
1.26
1.36
1.45
1.53
1.63
1.77
1.91
2.12
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
35.6
38.1
42.9
47.9
52.5
57.1
65.9
74.1
81.5
88
95.4
102
107
114
124
134
149
.63
33.2
.67
35.4
.76
39.7
.84
44.2
.92
48.1
.99
52.2
1.14 59.8
1.27 66.7
1.39 72.9
1.49 78.3
1.61 84.4
1.71 89.6
1.79 93.8
1.90 99.7
2.05 107
2.18 115
2.40 126
1/2" FACE
900 RPM
.84
.89
.99
1.09
1.18
1.27
1.44
1.59
1.72
1.83
1.96
2.06
2.15
2.27
2.42
2.55
2.76
29.4
31
34.6
38.2
41.3
44.5
50.4
55.7
60.3
64.2
68.6
72.3
75.1
79.4
84.6
89.4
96.5
REFERENCE PAGE 10.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
54
56
60
64
72
80
84
96
112
120
128
144
160
192
.09
.09
.10
.10
.12
.13
.14
.15
.18
.19
.20
.23
.26
.307
217
224
239
260
290
327
342
388
455
486
516
574
648
762
.17
.17
.18
.20
.22
.25
.26
.29
.34
.36
.38
.42
.47
.54
209
216
231
249
277
311
325
365
425
452
477
527
590
683
.31
.32
.34
.37
.40
.45
.47
.52
.60
.63
.66
.72
.79
.90
196
202
214
231
255
283
294
327
376
396
415
453
500
566
.55
.57
.60
.64
.69
.76
.79
.86
.97
1.01
1.05
1.12
1.22
1.34
16 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
3600 RPM
25 RPM
50 RPM
100 RPM
173
178
188
201
219
240
248
271
304
318
330
353
384
421
.74
.76
.80
.85
.91
.99
1.02
1.10
1.22
1.26
1.30
1.38
1.48
1.60
156
160
167
178
192
208
214
231
256
265
274
289
311
335
1.13
1.16
1.20
1.26
1.33
1.42
1.45
1.53
1.65
1.69
1.72
1.79
1.89
119
121
126
132
140
149
152
161
173
177
181
188
198
1.38
1.40
1.44
1.50
1.57
1.66
1.69
1.76
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
96.6
98.1
100
105
110
116
118
123
1.54
1.57
1.60
1.67
.06
.09
.11
.14
.18
.21
.26
19
28
34
44
57
63
82
.09
.12
.15
.19
.24
.28
.34
19
30
31
40
50
58
71
.15
.20
.24
.31
.38
.44
.54
16
21
25
32
40
46
57
.20
.26
.31
.40
.49
.60
.72
14
18
22
28
34
40
50
.25
.32
.38
.49
.62
.72
.88
Torque
REFERENCE PAGE 10.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
16
20
24
32
40
48
64
H.P.
81.1
82.2
84.2
87.5
1/2" FACE
900 RPM
3600 RPM
13
17
20
26
32
37
46
.32
.42
.50
.65
.82
.96
1.20
11
15
17
23
29
33
42
3600 RPM
H.P.
Torque
.56
.69
.82
1.12
1.41
1.65
9
12
14
20
25
29
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed
1000 FPM and are not subjected to shock loads.
*Torque Ratings (Lb. Ins.).
40
Gear Catalog
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
12 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
13
14
15
16
18
20
21
22
24
30
32
36
40
42
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
3/4" FACE
200 RPM
300 RPM
600 RPM
900 RPM
REFERENCE PAGE 10.
1200 RPM
1800 RPM
H.P. Torque
H.P. Torque H.P. Torque
H.P. Torque
H.P. Torque
H.P. Torque
H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.05
.05
.06
.07
.07
.08
.10
.11
.12
.13
.14
.19
.21
.24
.27
.28
.09
.10
.12
.13
.15
.16
.19
.23
.24
.26
.28
.37
.41
.46
.52
.55
.35
.38
.44
.49
.55
.60
.71
.82
.87
.92
1.01
1.29
1.40
1.57
1.74
1.80
.51
.55
.63
.71
.78
.86
1.01
1.15
1.22
1.28
1.41
1.78
1.92
2.13
2.34
2.42
.93
.99
1.12
1.25
1.37
1.50
1.73
1.95
2.06
2.15
2.33
2.85
3.05
3.33
3.59
3.69
1.27
1.35
1.51
1.68
1.83
1.99
2.28
2.54
2.67
2.78
2.98
3.57
3.80
4.09
4.37
4.46
2.82
2.92
3.19
3.46
3.69
3.91
4.31
4.65
4.81
4.93
5.14
49.4
51.1
55.9
60.6
64.6
68.5
75.4
81.4
84.3
86.2
90.0
119
130
149
169
189
209
249
289
310
328
365
483
529
605
682
715
118
129
147
167
186
206
245
284
304
322
357
470
514
586
659
689
.18
.20
.23
.26
.29
.32
.38
.44
.47
.49
.54
.71
.77
.88
.98
1.02
116
126
144
163
181
200
237
274
293
310
343
447
488
552
617
644
12 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
112
120
138
156
172
190
224
257
274
288
317
407
442
495
547
568
108
116
132
149
164
180
242
215
257
270
296
373
403
448
492
509
97
104
118
131
144
157
182
205
216
226
245
299
320
349
377
387
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
88.6
94.4
106
118
128
139
159
178
187
195
209
250
266
286
306
312
1.55
1.64
1.83
2.03
2.20
2.38
2.70
2.99
3.14
3.25
3.47
4.09
4.32
4.62
4.90
4.99
81.5
86.3
96.3
107
116
125
142
157
164
171
182
215
227
243
257
262
3/4" FACE
900 RPM
2.00
2.10
2.33
2.56
2.76
2.96
3.32
3.64
3.80
3.92
4.14
4.78
5.02
5.31
70
73.6
81.6
89.6
96.6
103
116
127
133
137
145
167
176
186
REFERENCE PAGE 11.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
48
54
60
64
72
84
96
108
112
120
144
168
.20
.23
.25
.27
.30
.36
.40
.46
.47
.50
.59
.69
497
571
631
683
762
896
1014
1148
1187
1264
1487
1745
.38
.43
.48
.51
.57
.66
.74
.84
.86
.91
1.06
1.22
477
545
600
647
718
837
938
1054
1087
1150
1333
1541
.70 441
.79 500
.87 546
.93 586
1.02 644
1.17 739
1.30 817
1.44 906
1.47 929
1.55 975
1.75 1103
1.98 1248
1.22
1.36
1.47
1.56
1.69
1.90
2.06
2.24
2.29
2.37
2.61
2.87
12 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
3600 RPM
25 RPM
50 RPM
100 RPM
384
430
463
493
533
598
649
706
720
748
821
905
1.62
1.79
1.91
2.02
2.17
2.40
2.56
2.76
2.80
2.89
3.11
3.38
340
377
402
425
455
503
538
579
588
607
654
710
2.41
2.62
2.74
2.87
3.01
3.24
3.39
3.58
3.62
3.69
3.86
253
275
288
301
316
340
356
376
379
387
406
2.88
3.09
3.21
3.33
3.46
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
201
216
224
233
242
3.19
3.40
REFERENCE PAGE 11.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
15
18
21
24
30
36
48
60
.13
.19
.23
.27
.34
.40
.51
.60
41
60
72
85
107
126
161
189
.20
.26
.31
.36
.44
.52
.66
.80
42
54
65
76
92
109
138
168
.34
.43
.50
.58
.73
.82
1.05
1.29
36
45
52
60
76
86
110
135
.45
.56
.66
.76
.95
1.13
1.39
1.72
31
39
46
53
66
79
97
120
.56
.68
.81
.92
1.14
1.36
1.70
2.13
Torque
167
178
3/4" FACE
900 RPM
3600 RPM
H.P.
29
36
42
48
60
71
89
112
.72
.90
1.06
1.22
1.56
1.83
2.33
2.95
25
31
37
42
54
64
81
103
3600 RPM
H.P.
Torque
1.15
1.44
1.80
2.07
2.64
3.18
20
25
31
36
46
56
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed
1000 FPM and are not subjected to shock loads.
*Torque Ratings (Lb. Ins.).
Gear Catalog
41
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
10 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
14
15
16
18
20
24
25
28
30
32
35
36
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
40
42
45
48
50
54
55
60
64
70
72
80
84
90
96
100
110
120
140
144
160
180
900 RPM
1200 RPM
1800 RPM
3600 RPM
H.P.
Torque
.09
.10
.13
.14
.16
.19
.22
.28
.29
.34
.37
.40
.45
.46
4.85
5.00
5.89
6.25
6.62
7.25
7.79
85
88
103
109
116
127
136
229
249
325
362
400
447
553
698
742
854
922
1010
1123
1153
.18
226
.20
246
.25
320
.28
356
.31
393
.37
468
.43
542
.54
681
.57
722
.66
829
.71
893
.78
977
.86 1083
.88 1111
.35
221 .67
.38
240 .73
.49
311 .93
.55
345 1.03
.60
381 1.13
.72
451 1.33
.83
520 1.53
1.03
648 1.88
1.09
687 1.98
1.24
784 2.24
1.34
842 2.39
1.46
917 2.59
1.60 1011 2.83
1.64 1036 2.89
25 RPM
50 RPM
100 RPM
211
229
294
325
357
420
481
592
625
707
754
817
893
912
.96
1.04
1.33
1.46
1.60
1.87
2.13
2.59
2.73
3.06
3.25
3.51
3.80
3.88
202
218
279
307
337
394
448
545
574
644
683
737
799
815
1.71
1.83
2.30
2.51
2.73
3.15
3.53
4.19
4.38
4.83
5.07
5.41
5.79
5.87
179
192
241
264
287
330
371
440
460
507
533
569
608
617
2.31
2.45
3.04
3.30
3.57
4.07
4.52
5.26
5.49
5.98
6.24
6.61
7.01
7.09
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
162
172
213
231
250
285
317
369
384
419
437
463
491
496
2.80
2.95
3.62
3.92
4.22
4.76
5.26
6.04
6.28
6.79
7.05
7.44
7.83
7.91
147
155
190
206
221
250
276
317
330
357
370
391
411
415
1" FACE
900 RPM
3.55
3.71
4.49
4.82
5.15
5.75
6.28
7.09
7.34
7.85
8.10
124
130
157
169
180
201
220
248
257
275
283
REFERENCE PAGE 12.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.31
.32
.35
.38
.39
.43
.44
.48
.51
.56
.57
.64
.67
.72
.76
.79
.87
.94
1.08
1.11
1.24
1.37
780
818
889
946
983
1083
1105
1199
1297
1410
1447
1623
1697
1807
1916
1988
2203
2380
2724
2791
3132
3459
.59
.62
.67
.71
.74
.82
.83
.90
.97
1.04
1.07
1.19
1.24
1.32
1.39
1.44
1.58
1.69
1.91
1.95
2.16
2.36
749
783
850
901
935
1029
1046
1130
1217
1316
1349
1502
1565
1659
1750
1810
1990
2133
2405
2457
2727
2971
1.10
1.15
1.24
1.31
1.35
1.48
1.50
1.61
1.72
1.84
1.88
2.07
2.15
2.26
2.37
2.44
2.64
2.80
3.09
3.15
3.44
3.68
693
722
780
823
851
931
945
1013
1084
1162
1187
1308
1355
1425
1492
1535
1667
1766
1949
1983
2166
2318
1.92
1.99
2.13
2.23
2.29
2.48
2.51
2.66
2.82
2.99
3.04
3.30
3.39
3.53
3.65
3.74
3.99
4.17
4.48
4.54
4.87
5.11
10 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
600 RPM
REFERENCE PAGE 11.
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
10 DIAMETRAL PITCH CAST IRON
No.
Teeth
300 RPM
1" FACE
25 RPM
50 RPM
100 RPM
603
626
670
701
722
782
791
839
890
942
958
1039
1069
1111
1152
1177
1258
1314
1413
1430
1535
1609
2.54
2.63
2.79
2.91
2.98
3.21
3.24
3.41
3.59
3.77
3.82
4.10
4.10
4.34
4.46
4.54
4.81
4.98
5.27
5.33
5.66
5.87
534
552
587
611
626
674
681
716
755
792
803
861
882
911
938
955
1011
1047
1108
1119
1188
1233
3.79
3.88
4.08
4.20
4.27
4.53
4.57
4.73
4.93
5.10
5.15
5.43
5.51
5.63
5.73
5.80
6.05
6.18
398
407
428
441
449
476
480
497
518
535
541
570
579
591
602
609
636
650
4.52
4.61
4.81
4.92
4.99
5.26
5.29
5.43
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
317
323
337
345
350
368
371
381
5.01
5.09
.27
.33
.40
.51
.62
85
104
126
161
195
.38
.47
.54
.67
.81
80
99
113
140
170
.63
.78
.88
1.09
1.29
66
82
92
114
135
.83
58
1.02
71
1.15
80
1.42
99
1.69 118
1.00
1.24
1.39
1.73
2.07
Torque
REFERENCE PAGE 11.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
15
18
20
25
30
H.P.
263
267
1" FACE
900 RPM
3600 RPM
52
65
73
90
109
1.31
1.63
1.85
2.32
2.80
46
57
65
81
98
3600 RPM
H.P.
Torque
2.08
2.60
3.12
4.00
4.89
36
45
55
70
86
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed
1000 FPM and are not subjected to shock loads.
*Torque Ratings (Lb. Ins.).
42
Gear Catalog
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
8 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
14
15
16
18
20
22
24
28
30
32
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1-1/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 12.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.18
.19
.25
.28
.31
.37
.43
.48
.54
.66
.71
.78
446
485
632
703
778
927
1075
1219
1355
1655
1786
1957
.35
.38
.49
.55
.60
.72
.83
.94
1.04
1.27
1.36
1.49
439
478
620
690
762
905
1047
1184
1313
1596
1718
1878
.68
.73
.95
1.05
1.16
1.37
1.58
1.78
1.96
2.37
2.53
2.76
427
463
599
664
731
865
996
1121
1237
1490
1598
1738
1.28
1.38
1.77
1.96
2.15
2.52
2.88
3.21
3.52
4.18
4.44
4.80
8 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
404
436
559
617
677
794
907
1012
1109
1316
1400
1513
1.82
1.96
2.49
2.74
3.00
3.49
3.96
4.39
4.78
5.61
5.93
6.38
383
412
524
576
630
734
832
923
1004
1178
1247
1340
3.16
3.37
4.21
4.58
4.97
5.69
6.35
6.95
7.46
8.53
8.93
9.49
332 4.19 294
5.00
354 4.43 310
5.26
442 5.45 382
6.40
481 5.90 413
6.89
522 6.36 445
7.39
598 7.20 504
8.30
667 7.96 557
9.10
730 8.62 603
9.79
783 9.17 642 10.36
896 10.33 723 11.54
938 10.73 752 11.94
997 11.34 794 12.56
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
263 6.21
276 6.47
336 7.75
362 8.29
388 8.83
436 9.80
478 10.64
514 11.34
544 11.90
606
627
660
1-1/4" FACE
900 RPM
1200 RPM
217 8.17
226 8.39
271 9.81
290 10.39
309 10.96
343
372
397
417
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
36
40
42
44
48
54
56
60
64
72
80
84
88
96
112
120
128
144
160
.53
.60
.63
.67
.72
.83
.86
.92
.99
1.10
1.23
1.29
1.34
1.45
1.69
1.79
1.89
2.09
2.33
1.01
1.14
1.19
1.26
1.36
1.55
1.60
1.70
1.83
2.02
2.24
2.34
2.42
2.60
2.98
3.14
3.30
3.59
3.95
1279
1434
1498
1591
1719
1958
2021
2145
2307
2548
2828
2943
3056
3277
3757
3960
4155
4528
4980
1.86
2.07
2.16
2.28
2.44
2.75
2.83
2.98
3.19
3.47
3.81
3.94
4.06
4.31
4.83
5.04
5.24
5.60
6.07
1174
1305
1358
1437
1540
1735
1784
1880
2008
2188
2398
2481
2561
2713
3045
3176
3300
3532
3828
3.20
3.51
3.63
3.82
4.05
4.48
4.59
4.79
5.06
5.42
5.84
5.99
6.13
6.41
7.01
7.22
7.42
7.78
8.28
8 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
25 RPM
50 RPM
100 RPM
884
961
989
1036
1088
1192
1215
1259
1323
1399
1492
1523
1553
1608
1731
1773
1811
6.14
6.55
6.69
6.95
7.19
7.72
7.83
8.01
8.33
8.64
9.06
9.18
9.30
9.50
645
688
703
730
756
811
822
842
875
908
952
965
976
998
7.25
7.66
7.78
8.05
8.27
300 RPM
600 RPM
25 RPM
50 RPM
176
192
233
283
334
.76
.88
.99
1.19
1.38
160
185
208
250
290
1.23
1.41
1.59
1.90
2.20
129
148
167
200
231
900 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1.61
1.84
2.08
2.50
2.91
1200 RPM
112
129
146
175
204
1.96
2.25
2.54
3.06
3.57
103
118
133
160
187
1-1/2" FACE
600 RPM
946
1030
1340
1491
1648
1962
2273
2436
2860
3335
3761
.74
.80
1.04
1.15
1.27
1.51
1.74
1.86
2.18
2.53
2.84
928
1008
1308
1452
1603
1902
2196
2349
2745
3186
3576
1.42
1.54
1.98
2.19
2.41
2.84
3.26
3.48
4.03
4.64
5.17
893
968
1247
1381
1519
1792
2057
2194
2541
2924
3255
2.64
2.84
3.62
3.99
4.37
5.10
5.79
6.15
7.02
7.97
8.76
832 3.70 778
896 3.97 834
1142 5.01 1053
1257 5.49 1154
1376 5.98 1257
1606 6.92 1455
1825 7.81 1640
1937 8.25 1734
2212 9.32 1958
2512 10.48 2201
2761 11.41 2396
6.20
6.57
8.12
8.81
9.51
10.80
11.97
12.56
13.87
15.29
16.35
652
691
853
925
999
1135
1258
1319
1457
1606
1717
900 RPM
8.01
8.41
10.24
11.03
11.83
13.28
14.57
15.20
16.57
18.05
19.10
H.P. Torque
REFERENCE PAGE 12.
1800 RPM
2.60
3.00
3.40
4.13
4.86
91
105
119
144
170
561
589
717
773
828
930
1020
1065
1160
1264
1338
9.37
9.78
11.77
12.62
13.47
15.00
16.33
16.99
18.35
3600 RPM
H.P. Torque
4.39
4.71
5.84
7.22
77
82
102
126
REFERENCE PAGE 13.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.38
.41
.53
.59
.65
.78
.90
.97
1.13
1.32
1.49
3600 RPM
507
536
545
564
579
141⁄ 2° PRESSURE ANGLE 1-1/4" FACE
200 RPM
.56
.61
.74
.90
1.06
6 DIAMETRAL PITCH STEEL
11
12
14
15
16
18
20
21
24
27
30
4.21
4.57
4.71
4.93
5.18
5.67
5.78
5.99
6.30
6.66
7.10
7.25
7.39
7.65
8.24
8.44
8.62
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
16
18
20
24
28
No.
Teeth
1009
1107
1145
1204
1275
1413
1446
1508
1595
1707
1839
1887
1933
2019
2207
2275
2339
2452
2610
143
147
172
182
192
REFERENCE PAGE 13.
No.
Teeth
1339
1508
1579
1681
1824
2092
2164
2307
2492
2775
3107
3246
3384
3656
4256
4517
4773
5272
5868
3600 RPM
H.P. Torque
492
514
618
663
708
788
858
892
964
11.29
11.69
13.85
14.75
15.65
17.23
3600 RPM
H.P. Torque
395 14.19 249
409 14.51 254
485
517
548
603
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
43
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
6 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
141⁄ 2° PRESSURE ANGLE
1-1/2" FACE
200 RPM
900 RPM
300 RPM
600 RPM
REFERENCE PAGE 14.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
32
33
36
40
42
48
54
60
64
66
72
84
96
108
120
144
.98 2470
1.01 2543
1.12 2813
1.25 3163
1.31 3310
1.51 3814
1.73 4364
1.90 4801
2.05 5177
2.11 5322
2.28 5750
2.66 6695
2.98 7510
3.35 8436
3.65 9205
4.23 10664
1.86
1.91
2.10
2.35
2.45
2.80
3.18
3.47
3.72
3.81
4.09
4.69
5.19
5.75
6.19
7.01
2341 3.36
2406 3.45
2650 3.77
2962 4.17
3090 4.33
3530 4.88
4005 5.46
4371 5.88
4688 6.26
4807 6.39
5153 6.77
5912 7.60
6538 8.24
7246 8.97
7806 9.50
8831 10.43
2120
2173
2375
2628
2728
3073
3440
3706
3944
4027
4267
4790
5193
5652
5987
6571
5 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
14
15
16
18
20
25 RPM
50 RPM
24
25
30
35
40
45
50
55
60
70
80
100
100 RPM
11
12
14
15
16
18
20
22
7.32
7.46
7.99
8.62
8.85
9.64
10.47
10.97
11.48
11.62
12.03
12.96
13.56
14.31
1539
1567
1678
1811
1858
2025
2199
2305
2411
2442
2528
2724
2849
3006
10.38
10.51
11.09
11.76
11.97
12.75
13.59
14.00
14.50
14.62
14.94
200 RPM
300 RPM
.63
.68
.89
.99
1.09
1.30
1.50
1583
1723
2241
2491
2754
3275
3793
1.23
1.33
1.73
1.92
2.11
2.50
2.89
1546
1680
2176
2415
2664
3156
3640
2.35
2.54
3.26
3.61
3.97
4.67
5.35
1479
1600
2057
2275
2501
2942
3370
25 RPM
50 RPM
100 RPM
4.31
4.64
5.89
6.47
7.07
8.22
9.31
1360 5.99 1258
1462 6.40 1345
1855 8.04 1689
2039 8.79 1847
2227 9.56 2008
2590 11.01 2313
2934 12.36 2597
1-3/4" FACE
600 RPM
9.79
10.33
12.68
13.71
14.76
16.68
18.40
900 RPM
REFERENCE PAGE 14.
1200 RPM
1028
1085
1332
1441
1550
1752
1933
12.41
12.99
15.70
16.86
18.03
20.13
21.98
869
910
1099
1181
1262
1410
1539
14.33
14.91
17.82
19.05
20.27
22.46
24.34
141⁄ 2° PRESSURE ANGLE
1-3/4" FACE
200 RPM
900 RPM
300 RPM
1800 RPM
600 RPM
753
783
936
1000
1065
1179
1279
16.96
17.49
20.60
21.88
REFERENCE PAGE 14.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.13
1.20
1.49
1.80
2.08
3.95
4.17
5.03
5.95
6.70
2.16
2.29
2.80
3.37
3.85
2.36 5947 4.33
2.60 6543 4.73
2.90 7321 5.25
3.14 7910 5.62
3.65 9213 6.45
4.17 10514 7.26
5.03 12671 8.52
2723
2885
3534
4246
4852
2487 6.73
2626 7.07
3168 8.32
3749 9.64
4224 10.65
5459 7.44 4689 11.60
5956 8.01 5051 12.29
6612 8.79 5539 13.27
7089 9.31 5870 13.86
8135 10.46 6592 15.16
9153 11.54 7270 16.35
10745 13.08 8241 17.84
25 RPM
50 RPM
2120 8.79 1847 12.69
2227 9.20 1933 13.19
2623 10.66 2238 14.80
3038 12.15 2554 16.44
3356 13.25 2783 17.53
1333 14.88 1042
1385 15.41 1079
1554 17.00 1191
1727
1841
3657
3874
4182
4368
4779
5152
5620
1945
2005
2112
2159
14.27
14.95
15.99
16.56
17.84
18.99
2997
3142
3359
3478
3748
3989
18.52
19.08
20.11
20.55
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
600 RPM
2" FACE
900 RPM
2810
3057
3971
4414
4876
5794
6703
7579
2.17
2.35
3.04
3.37
3.71
4.39
5.06
5.69
2730 4.10
2963 4.43
3831 5.67
4247 6.26
4680 6.87
5535 8.06
6373 9.21
7173 10.28
2584
2792
3577
3948
4332
5080
5802
6478
7.41
7.94
10.02
10.98
11.97
13.85
15.61
17.22
2334
2502
3158
3461
3772
4364
4920
5427
10.13
10.79
13.46
14.67
15.90
18.20
20.33
22.23
2128
2266
2827
3081
3339
3824
4271
4670
16.01
16.83
20.48
22.06
23.66
26.56
29.13
31.33
1682
1768
2151
2318
2485
2790
3060
3291
19.86
20.69
24.79
26.52
28.26
31.35
34.04
36.29
1391
1449
1736
1857
1979
2196
2384
2541
22.57
23.37
27.70
29.50
31.30
3600 RPM
H.P. Torque
REFERENCE PAGE 15.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.11
1.21
1.58
1.75
1.93
2.30
2.66
3.01
3600 RPM
H.P. Torque
594
613
721
766
H.P. Torque H.P. Torque
2859
3034
3752
4548
5242
H.P. Torque
1090 12.06 844
1104
1165
1235
1257
1339
1427
1471
1523
1536
1569
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
4 DIAMETRAL PITCH STEEL
No.
Teeth
1783
1821
1967
2144
2211
2441
2683
2842
2993
3040
3175
3473
3680
3924
4083
4347
141⁄ 2° PRESSURE ANGLE
5 DIAMETRAL PITCH CAST IRON
No.
Teeth
5.66
5.78
6.24
6.80
7.02
7.75
8.52
9.02
9.50
9.65
10.08
11.02
11.68
12.45
12.96
13.79
3600 RPM
3600 RPM
H.P.
1185 26.14 915
1228 26.85 940
1455
1550
1644
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
44
Gear Catalog
Torque
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
4 DIAMETRAL PITCH CAST IRON
No.
Teeth
24
28
30
32
36
40
42
44
48
54
56
60
64
72
80
84
88
96
25 RPM
50 RPM
100 RPM
11
12
14
15
16
18
20
21
200 RPM
5042
6129
6599
7211
8187
9177
9588
10181
10999
12530
12933
13727
14763
16305
18101
18838
19561
20970
3.77
4.54
4.87
5.30
5.96
6.63
6.90
7.29
7.82
8.81
9.06
9.55
10.20
11.11
12.18
12.60
13.00
13.78
4750
5723
6135
6675
7514
8354
8694
9195
9858
11104
11419
12034
12852
14005
15350
15877
16387
17365
6.75
8.02
8.53
9.22
10.24
11.24
11.63
12.22
12.95
14.35
14.68
15.32
16.20
17.33
18.68
19.17
19.63
20.50
4257
5053
5378
5811
6454
7085
7328
7703
8163
9045
9253
9652
10209
10923
11772
12079
12372
12922
24
30
36
42
48
54
60
72
84
96
108
600 RPM
25 RPM
50 RPM
11.19
12.99
13.69
14.65
15.98
17.24
17.69
18.46
19.28
20.94
21.29
21.94
22.95
24.07
25.48
25.93
26.35
27.13
3525
4094
4314
4616
5034
5433
5575
5816
6074
6598
6708
6915
7233
7585
8029
8170
8304
8548
14.32
16.38
17.14
18.22
19.64
20.97
21.42
22.24
23.02
24.72
25.04
25.65
26.66
27.65
3008
3441
3601
3829
4126
4406
4499
4672
4837
5193
5261
5388
5601
5810
19.88
22.16
22.92
24.11
25.49
26.77
27.12
27.97
28.58
2" FACE
900 RPM
1200 RPM
REFERENCE PAGE 15.
1800 RPM
100 RPM
200 RPM
300 RPM
3" FACE
7421 5.67 7146 10.56
8067 6.14 7743 11.37
10462 7.92 9979 14.49
11618 8.76 11046 15.96
12825 9.64 12156 17.47
15214 11.37 14333 20.38
17570 13.05 16454 23.16
18795 13.92 17549 24.59
6652
7167
9134
10056
11008
12845
14599
15495
25 RPM
50 RPM
100 RPM
18.55
19.80
24.79
27.06
29.38
33.75
37.80
39.84
5846
6239
7812
8528
9259
10637
11913
12556
24.82
26.30
32.48
35.24
38.03
43.20
47.89
50.24
5213
5524
6824
7403
7989
9076
10062
10554
600 RPM
37.47
39.14
47.09
50.49
53.89
60.00
65.33
67.96
3936
4111
4947
5304
5661
6303
6863
7139
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
900 RPM
1200 RPM
1800 RPM
600 RPM
45.15
46.74
55.40
59.01
62.60
68.93
13175
17164
21199
24721
28241
32043
34965
41223
47293
52300
57968
9.67
12.40
15.07
17.32
19.50
21.83
23.52
27.08
30.40
32.96
35.87
12195
15626
18998
21828
24586
27523
29651
34136
38322
41545
45212
16.84
21.03
24.96
28.06
30.99
34.06
36.08
40.30
44.08
46.71
49.81
10617
13251
15732
17687
19530
21466
22740
25402
27782
29437
31395
26.76
32.25
37.15
40.69
43.91
47.30
49.22
53.32
56.87
59.02
61.84
8433
10162
11707
12822
13838
14906
15509
16803
17923
18597
19486
33.30
39.23
44.37
47.87
51.00
54.35
3600 RPM
H.P. Torque
3162 50.30 2642
3273 51.78 2719
3880
4132
4383
4827
3" FACE
900 RPM
1200 RPM
REFERENCE PAGE 15.
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
5.23
6.81
8.41
9.81
11.20
12.71
13.87
16.35
18.76
20.75
22.99
H.P. Torque
REFERENCE PAGE 15.
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
2.94
3.20
4.15
4.61
5.09
6.03
6.97
7.46
3600 RPM
2089 22.84 1600
2328
2408
2534
2677
2812
2849
2938
3002
141⁄ 2° PRESSURE ANGLE
3 DIAMETRAL PITCH CAST IRON
No.
Teeth
300 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
2.00
2.43
2.62
2.86
3.25
3.64
3.80
4.04
4.36
4.97
5.13
5.44
5.86
6.47
7.18
7.47
7.76
8.32
3 DIAMETRAL PITCH STEEL
No.
Teeth
141⁄ 2° PRESSURE ANGLE
3600 RPM
H.P. Torque
6995 44.05 4627
8241 50.07 5259
9322 55.08 5786
10056
10715
11417
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
45
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
20 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
24
25
30
35
40
45
50
60
70
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 30.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P. Torque
.01
.02
.02
.02
.03
.03
.04
.04
.05
.07
.08
.09
.10
.12
.14
1.08
1.32
1.42
1.49
1.64
1.78
2.00
2.04
2.28
2.55
2.73
36.5
48.0
53.8
58.6
68.6
79.2
99.5
105
132
165
194
224
248
306
365
.03
.04
.04
.05
.05
.06
.08
.08
.10
.13
.15
.17
.19
.24
.28
36.3
47.7
53.3
58.1
67.9
78.4
98.3
103
130
162
190
219
242
296
352
.06
.07
.08
.09
.11
.12
.15
.16
.20
.25
.29
.33
.37
.44
.52
35.8
46.9
52.5
57.1
66.7
76.8
95.8
101
126
156
182
209
230
279
329
20 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
.11
.14
.16
.18
.20
.23
.29
.30
.38
.46
.53
.61
.66
.79
.92
34.9 .16
34.1
45.6 .21
44.3
50.9 .23
49.3
55.2 .25
53.5
64.2 .29
62.0
73.7 .34
70.8
91.3 .41
87.1
95.6 .43
91.1
119
.53 112
145
.65 136
168
.75 157
192
.84 177
210
.92 192
250 1.08 227
291 1.24 260
.30
.39
.43
.46
.53
.60
.73
.76
.92
1.09
1.24
1.38
1.47
1.68
1.88
31.8
40.9
45.3
48.8
56.1
63.5
76.7
79.9
96.4
115
130
145
154
177
198
20° PRESSURE ANGLE
200 RPM
300 RPM
.42
.54
.60
.64
.73
.82
.98
1.02
1.21
1.42
1.58
1.74
1.84
2.07
2.28
29.7
37.9
41.9
44.9
51.2
57.5
68.5
71.1
84.5
99.4
111
122
129
145
160
.53
.67
.74
.79
.90
1.00
1.18
1.22
1.43
1.67
1.84
2.01
2.10
2.34
2.55
1/2" FACE
600 RPM
900 RPM
28.0
35.4
38.9
41.6
47.1
52.6
61.9
64.1
75.2
87.5
96.6
105
111
123
134
.71
.89
.97
1.04
1.16
1.28
1.48
1.53
1.76
2.02
2.20
2.37
2.46
2.69
25.0
31.2
34.1
36.3
40.6
44.9
51.9
53.5
61.6
70.6
77.0
83.0
86.1
94.0
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
80
84
90
100
120
140
160
180
200
.10
.11
.11
.13
.15
.18
.21
.23
.25
256
269
287
317
387
447
520
579
637
.20
.20
.22
.24
.29
.33
.38
.42
.46
246
257
274
302
365
418
481
532
580
.36
.38
.40
.44
.52
.59
.66
.72
.78
228
237
252
275
327
369
419
457
492
16 DIAMETRAL PITCH STEEL
12
14
15
16
18
20
24
28
30
32
36
40
48
56
60
64
72
80
25 RPM
50 RPM
.63
.65
.69
.74
.86
.95
1.06
1.13
1.20
198
206
216
233
271
299
333
356
377
.84
.86
.90
.96
1.10
1.20
1.31
1.39
1.46
176
181
189
202
231
251
276
292
306
1.24
1.27
1.32
1.38
1.53
1.62
1.74
1.80
1.86
131
134
138
145
161
170
183
189
195
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1.49
1.51
1.55
1.61
1.76
1.83
104
106
109
113
123
128
1.65
1.67
1.71
1.76
900 RPM
3600 RPM
H.P.
REFERENCE PAGE 31.
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.03
.04
.05
.05
.06
.07
.09
.11
.12
.13
.16
.18
.22
.26
.28
.31
.35
.39
2.26
2.73
2.93
3.07
3.35
3.62
4.02
4.40
4.55
4.79
5.09
5.37
39.5
47.7
51.3
53.8
58.6
63.3
70.4
77.0
79.7
83.9
89.1
94.1
85.5
112
126
136
160
185
233
283
308
340
395
452
556
665
711
779
872
991
.07
.09
.10
.11
.13
.14
.18
.22
.24
.26
.31
.35
.43
.51
.54
.59
.66
.75
84.7
111
124
135
158
183
229
278
302
333
385
440
539
642
684
748
833
943
.13
.17
.19
.21
.25
.28
.35
.43
.46
.51
.58
.66
.81
.95
1.01
1.10
1.21
1.36
83.4
109
122
133
155
178
222
268
291
320
368
418
508
599
636
692
764
858
.26
.33
.37
.40
.47
.54
.66
.79
.86
.94
1.07
1.21
1.44
1.68
1.77
1.91
2.08
2.31
80.9
105
117
127
148
169
209
250
270
296
338
381
455
529
557
602
656
728
.37
.48
.54
.58
.67
.77
.94
1.12
1.20
1.31
1.49
1.66
1.96
2.25
2.36
2.54
2.74
3.01
78.4
102
113
122
142
161
198
235
253
275
312
349
412
474
496
533
575
632
.69
.88
.97
1.04
1.19
1.35
1.62
1.88
2.01
2.17
2.42
2.67
3.06
3.43
3.55
3.78
4.00
4.31
72.0
92.2
102
110
125
141
170
198
211
228
254
280
322
360
373
397
420
653
.95
1.20
1.33
1.42
1.61
1.80
2.12
2.44
2.59
2.78
3.06
3.34
3.76
4.15
4.27
4.51
4.72
5.04
66.5
84.4
92.8
99.4
113
126
149
171
181
195
215
234
264
291
299
316
330
353
1.18
1.48
1.62
1.73
1.94
2.16
2.52
2.87
3.02
3.23
3.53
3.82
4.25
4.64
4.75
5.00
61.8
77.7
85.2
90.8
102
113
132
151
159
170
186
201
223
244
250
263
1.55
1.92
2.09
2.21
2.46
2.70
3.10
3.47
3.63
3.86
4.17
4.47
4.88
54.2
67.2
73.1
77.5
86.2
94.7
108
122
127
135
146
156
171
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
46
Torque
86.5
87.8
89.7
92.4
3/4" FACE
600 RPM
18.9
23.0
24.9
26.2
28.7
31.2
34.9
35.8
40.0
44.7
47.8
REFERENCE PAGE 30 & 34.
1200 RPM
No.
Teeth
No.
Teeth
3600 RPM
Gear Catalog
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
16 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
20° PRESSURE ANGLE
200 RPM
300 RPM
3/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 31.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
96
128
144
160
192
.28
.38
.42
.47
.56
707 .53 666
949 .70 879
1057 .77 970
1195 .86 1088
1406 1.00 1260
.95 597
1.21 765
1.32 833
1.46 923
1.66 1044
12 DIAMETRAL PITCH STEEL
No.
Teeth
12
13
14
15
16
18
20
21
24
28
30
36
42
48
54
25 RPM
50 RPM
1.57
1.93
2.06
2.25
2.46
494
608
650
707
777
2.01
2.40
2.54
2.73
2.94
421
504
533
574
618
2.79
3.17
3.29
3.49
3.65
293
333
346
366
384
3.20
3.56
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
224
249
1" FACE
600 RPM
900 RPM
REFERENCE PAGE 31.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.08
.09
.11
.12
.13
.15
.17
.19
.22
.26
.29
.37
.44
.52
.60
202 .16 200
233 .18 230
265 .21 262
297 .23 293
323 .25 319
379 .30 373
437 .34 429
468 .36 459
548 .43 537
667 .52 651
720 .56 707
928 .71 899
1112 .85 1073
1304 .99 1252
1505 1.14 1437
.31
196
.36
225
.41
256
.45
285
.49
310
.57
361
.66
415
.70
443
.82
515
.99
621
1.07
673
1.34
847
1.59 1001
1.84 1159
2.09 1319
12 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
.60 188
.86
.68 215
.98
.77 244 1.11
.86 271 1.23
.93 294 1.33
1.08 340 1.53
1.23 389 1.74
1.31 413 1.84
1.51 477 2.11
1.80 568 2.49
1.94 612 2.68
2.41 759 3.27
2.81 884 3.77
3.20 1009 4.25
3.60 1133 4.73
181
206
233
259
279
322
365
388
444
524
562
688
792
893
993
1.54
1.75
1.96
2.16
2.31
2.63
2.95
3.11
3.50
4.04
4.29
5.11
5.73
6.33
6.90
162
183
206
227
243
276
310
327
368
425
451
537
602
665
724
20° PRESSURE ANGLE
200 RPM
300 RPM
2.09
2.36
2.63
2.88
3.07
3.46
3.84
4.03
4.48
5.10
5.37
6.28
6.94
7.56
8.14
147
165
184
202
215
242
269
282
314
357
376
440
486
529
570
2.55
2.86
3.18
3.46
3.68
4.10
4.52
4.73
5.21
5.86
6.15
7.09
7.76
8.37
134
150
167
182
193
215
238
249
274
308
323
373
407
440
1" FACE
600 RPM
900 RPM
3.27
3.63
4.00
4.34
4.58
5.04
5.50
5.73
6.22
6.89
7.19
8.15
114
127
140
152
160
177
193
201
218
241
252
285
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
60
66
72
84
96
108
120
132
144
168
192
216
.40
.45
.48
.58
.65
.75
.82
.89
.97
1.13
1.27
1.41
.75
.84
.91
1.07
1.21
1.37
1.49
1.61
1.73
2.00
2.22
2.42
949
1064
1150
1354
1519
1725
1882
2034
2181
2526
2794
3045
1.37
1.53
1.64
1.90
2.10
2.35
2.53
2.70
2.87
3.25
3.52
3.77
864
961
1031
1196
1322
1482
1596
1704
1806
2047
2219
2375
2.32
2.56
2.71
3.07
3.33
3.67
3.88
4.08
4.26
4.71
4.99
5.23
733
805
853
969
1050
1156
1224
1287
1344
1484
1573
1649
3.03
3.30
3.47
3.88
4.15
4.51
4.73
4.92
5.09
5.54
5.80
6.01
636
693
728
814
871
947
993
1033
1070
1164
1218
1263
4.34
4.65
4.81
5.24
5.49
5.85
6.03
6.19
6.32
456
488
506
551
576
615
634
650
664
5.07
5.38
5.53
3600 RPM
H.P. Torque
4.53
4.97
5.42
5.80
6.05
6.55
7.02
7.26
7.72
79.4
87.1
94.8
102.0
106.0
115.0
123.0
127.0
135.0
REFERENCE PAGE 32.
1200 RPM
No.
Teeth
998
1125
1221
1450
1641
1879
2068
2252
2433
2861
3209
3545
3600 RPM
H.P. Torque
3600 RPM
H.P.
Torque
355
377
387
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
47
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
10 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
24
25
28
30
35
40
45
48
50
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1-1/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 32.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.14
.19
.21
.23
.27
.31
.39
.41
.47
.52
.64
.75
.87
.92
.96
363
.28 358 .55 349
477
.37 469 .72 456
533
.42 525 .81 509
580
.45 571 .88 552
679
.53 667 1.02 642
784
.61 768 1.17 737
983
.76 958 1.45 913
1032
.80 1005 1.52 956
1195
.92 1161 1.74 1097
1300 1.00 1260 1.88 1187
1615 1.24 1558 2.31 1454
1896 1.44 1820 2.67 1685
2190 1.66 2092 3.05 1920
2328 1.76 2218 3.21 2026
2420 1.83 2301 3.32 2095
10 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
1.06
1.37
1.52
1.64
1.90
2.16
2.65
2.76
3.14
3.38
4.08
4.65
5.23
5.48
5.64
333
431
479
518
599
682
834
870
990
1064
1284
1467
1649
1727
1777
1.51
1.95
2.16
2.32
2.67
3.02
3.65
3.80
4.29
4.59
5.47
6.18
6.88
7.16
7.34
318 2.66 280 3.57
409 3.37 354 4.46
453 3.70 389 4.87
488 3.96 416 5.18
561 4.48 471 5.79
635 5.00 526 6.41
767 5.89 619 7.41
799 6.10 641 7.64
901 6.76 710 8.37
964 7.16 752 8.80
1150 8.33 875 10.08
1299 9.20 966 10.99
1445 10.04 1054 11.85
1504 10.33 1085 12.12
1542 10.52 1105 12.29
20° PRESSURE ANGLE
200 RPM
300 RPM
250 4.30 226 5.40 189 7.27
312 5.31 279 6.58 230 8.63
341 5.78 303 7.10 249 9.22
363 6.12 321 7.47 262 9.60
406 6.79 356 8.19 287 10.33
449 7.45 391 8.90 311 11.04
519 8.50 447 9.98 349
535 8.74 459 10.21 358
586 9.50 499 10.99 385
616 9.94 522 11.42 400
706 11.27 592
770 12.17 639
830
849
861
1-1/4" FACE
600 RPM
900 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
55
60
70
80
90
100
120
140
160
200
.65
.71
.84
.98
1.09
1.20
1.45
1.66
1.91
2.30
1.23
1.33
1.57
1.81
2.00
2.18
2.59
2.93
3.32
3.90
1550
1675
1974
2279
2517
2746
3271
3688
4191
4920
2.22
2.38
2.77
3.15
3.43
3.70
4.30
4.74
5.28
5.99
1400
1501
1743
1984
2162
2329
2709
2989
3329
3773
8 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
22
24
28
32
36
25 RPM
50 RPM
3.72
3.94
4.48
5.00
5.35
5.67
6.40
6.88
7.49
8.17
1173
1243
1413
1576
1686
1786
2016
2167
2359
2573
4.80
5.05
5.65
6.22
6.58
6.89
7.64
8.09
8.69
1009
1061
1187
1307
1382
1448
1605
1699
1826
6.77
7.01
7.65
8.23
8.54
8.80
9.48
711
737
803
865
897
924
996
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
7.84
8.06
678
890
996
1084
1268
1462
1651
1831
2224
2664
3082
.53
.69
.77
.84
.98
1.13
1.27
1.41
1.70
2.03
2.34
667
874
976
1061
1238
1424
1604
1775
2145
2557
2944
1.03
1.34
1.49
1.62
1.88
2.15
2.41
2.65
3.18
3.76
4.29
647
843
939
1018
1183
1354
1518
1672
2003
2367
2703
1.93
2.50
2.77
2.99
3.44
3.91
4.35
4.75
5.61
6.54
7.37
609
787
873
943
1086
1233
1371
1498
1768
2060
2321
2.74
3.51
3.88
4.18
4.77
5.39
5.95
6.46
7.54
8.68
9.68
576
738
816
877
1003
1131
1250
1357
1583
1824
2034
4.71
5.92
6.49
6.92
7.78
8.64
9.41
10.08
11.47
12.92
14.13
495
622
681
727
817
908
989
1059
1204
1358
1484
3600 RPM
H.P. Torque
900 RPM
REFERENCE PAGE 33.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.27
.35
.39
.43
.50
.58
.66
.73
.88
1.06
1.22
6.19 434
7.68 537
8.35 585
8.85 620
9.84 689
10.82 758
11.67 817
12.39 868
13.88 972
15.44 1081
16.68 1168
7.35
9.01
9.76
10.30
11.35
12.38
13.27
14.00
15.51
17.10
386
473
513
541
596
650
698
735
815
898
9.03
10.91
11.73
12.30
13.40
14.47
15.36
16.08
316
382
411
431
469
507
538
563
3600 RPM
H.P.
Torque
11.72
13.81
14.70
205
242
257
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
48
Gear Catalog
127
151
161
168
181
193
549
564
1-1/2" FACE
600 RPM
Torque
REFERENCE PAGE 32.
1200 RPM
No.
Teeth
1638
1778
2114
2462
2742
3016
3650
4177
4814
5802
3600 RPM
H.P.
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
8 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
20° PRESSURE ANGLE
200 RPM
300 RPM
1-1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 33.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
40
44
48
56
60
64
72
80
88
96
112
120
128
.84
.95
1.03
1.22
1.30
1.42
1.59
1.79
1.96
2.11
2.49
2.64
2.79
2111
2384
2587
3080
3283
3588
3997
4525
4929
5325
6266
6651
7028
1.59
1.79
1.93
2.28
2.42
2.64
2.91
3.27
3.53
3.79
4.39
4.63
4.85
2007
2256
2437
2876
3052
3322
3669
4119
4451
4772
5533
5830
6118
2.90
3.23
3.47
4.03
4.25
4.59
5.00
5.54
5.92
6.27
7.11
7.42
7.71
1928 4.92 1550 6.40
2038 5.42 1707 6.99
2184 5.74 1809 7.35
2539 6.53 2057 8.23
2676 6.81 2146 8.53
2892 7.29 2297 9.07
3151 7.80 2458 9.59
3493 8.50 2679 10.34
3729 8.93 2816 10.76
3952 9.33 2941 11.15
4483 10.31 3250 12.13
4677 10.63 3351 12.43
4860 10.93 3444 12.69
6 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
21
24
27
30
25 RPM
50 RPM
1345
1469
1543
1729
1792
1905
2014
2173
2262
2341
2549
2610
2667
9.18
9.86
10.20
11.14
11.40
12.00
12.44
13.20
13.54
13.83
964 10.72 751
1035 11.41 799
1072 11.72 821
1170
1198
1260
1307
1386
1422
1453
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
2" FACE
600 RPM
900 RPM
REFERENCE PAGE 33 & 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.63
.83
.93
1.01
1.18
1.46
1.70
1.98
2.25
1559
2097
2345
2551
2981
3671
4294
4986
5660
1.24
1.62
1.81
1.97
2.29
2.81
3.27
3.78
4.27
1565
2046
2284
2480
2889
3541
4122
4763
5381
2.38
3.10
3.45
3.73
4.32
5.25
6.05
6.94
7.77
1502 4.41 1391 6.16
1951 5.67 1786 7.84
2171 6.27 1977 8.64
2351 6.76 2129 9.26
2722 7.74 2440 10.52
3306 9.26 2919 12.44
3815 10.54 3322 14.00
4372 11.92 3755 15.66
4899 13.18 4155 17.17
6 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
1294
1647
1814
1945
2210
2613
2941
3241
3607
10.20
12.70
13.85
14.71
16.41
18.93
20.83
22.85
24.60
1072
1334
1455
1545
1724
1988
2188
2400
2584
20° PRESSURE ANGLE
200 RPM
300 RPM
13.06
16.02
17.35
18.30
20.18
22.91
24.88
26.98
28.75
915
1122
1215
1282
1413
1605
1743
1889
2013
15.19
18.42
19.85
20.85
22.79
25.61
27.56
798
967
1043
1095
1197
1345
1448
2" FACE
600 RPM
900 RPM
18.14
21.67
23.20
24.21
26.18
REFERENCE PAGE 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
33
36
42
48
54
60
66
72
84
96
108
120
1.53
1.71
2.04
2.38
2.74
3.01
3.38
3.65
4.30
4.82
5.47
5.97
2.89
3.23
3.81
4.41
5.02
5.48
6.10
6.54
7.59
8.39
9.40
10.13
3641
4066
4807
5563
6333
6910
7691
8245
9566
10579
11583
12770
5.22
5.78
6.73
7.68
8.63
9.30
10.22
10.83
12.30
13.33
14.67
15.54
3288
3644
4244
4843
5440
5860
6443
6827
7752
8404
9245
9793
8.74
9.58
10.91
12.21
13.46
14.26
15.44
16.12
17.83
18.90
20.37
21.20
2755
3018
3439
3847
4243
4494
4864
5080
5620
5955
6420
6680
11.28
12.26
13.76
15.19
16.55
17.35
18.60
19.26
20.98
21.95
23.41
2370
2575
2891
3191
3477
3645
3907
4045
4407
4611
4917
15.90
17.02
18.62
20.09
21.48
22.14
23.39
23.90
3600 RPM
H.P. Torque
635
759
812
848
917
No.
Teeth
3847
4316
5148
6009
6899
7591
8515
9200
10835
12152
13800
15059
3600 RPM
H.P. Torque
3600 RPM
H.P. Torque
1670 18.42 1290
1788 19.56 1370
1955
2111
2256
2326
2457
2511
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
49
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
5 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
24
25
28
30
35
40
45
50
60
70
80
100
110
120
140
160
180
300 RPM
600 RPM
900 RPM
REFERENCE PAGE 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.14
1.49
1.67
1.81
2.12
2.44
2865
3756
4198
4565
5332
6141
2.22
2.89
3.23
3.50
4.08
4.68
2794
3647
4069
4416
5138
5894
4.22
5.47
6.08
6.58
7.60
8.66
2662
3449
3833
4146
4789
5456
5 DIAMETRAL PITCH CAST IRON
No.
Teeth
200 RPM
2-1/2" FACE
25 RPM
50 RPM
100 RPM
7.71
9.87
10.90
11.72
13.38
15.07
2431
3110
3435
3693
4216
4750
10.65
13.48
14.81
15.85
17.92
20.02
2237
2832
3112
3329
3766
4205
17.19
21.25
23.11
24.47
27.15
29.79
1805
2233
2427
2570
2852
3129
20° PRESSURE ANGLE
200 RPM
300 RPM
21.61
26.31
28.41
29.89
32.77
35.58
1513
1843
1990
2093
2295
2492
24.80
29.87
32.09
33.61
36.56
39.41
1302 29.09 1019
1569 34.53 1209
1686 36.87 1291
1765
1920
2070
2-1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.82
1.91
2.21
2.40
2.97
3.47
3.98
4.38
5.32
6.27
7.23
8.71
9.68
10.38
11.70
13.30
14.49
4599
4826
5571
6050
7477
8737
10040
11046
13399
15794
18229
21969
24409
26168
29508
33526
36534
3.48
3.64
4.18
4.52
5.54
6.42
7.31
7.98
9.53
11.06
12.59
14.78
16.22
17.19
18.97
21.13
22.61
4381
4588
5267
5700
6982
8087
9216
10056
12008
13945
15869
18630
20449
21669
23910
26631
28495
6.35
6.63
7.54
8.10
9.78
11.17
12.56
13.53
15.78
17.93
20.00
22.67
24.50
25.58
27.50
29.94
31.40
4002
4177
4750
5108
6164
7040
7916
8528
9944
11300
12605
14288
15439
16125
17334
18870
19787
10.82
11.24
12.60
13.42
15.85
17.75
19.59
20.75
23.48
26.00
28.34
30.92
32.88
33.85
35.49
37.83
38.97
3411
3542
3970
4230
4995
5593
6174
6540
7400
8192
8932
9745
10362
10666
11182
11921
12281
14.15
14.64
16.23
17.18
19.98
22.08
24.09
25.25
28.05
30.58
32.92
2972
3075
3410
3609
4199
4639
5060
5304
5892
6425
6916
20.41
20.97
22.81
23.86
27.04
29.21
31.26
32.22
34.81
2144
2203
2396
2506
2840
3068
3284
3384
3657
23.95
24.51
26.37
27.41
3600 RPM
H.P. Torque
3600 RPM
H.P. Torque
1677
1716
1847
1920
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
STAINLESS STEEL GEAR GAUGE SET
14-1/2° and 20° PRESSURE ANGLES
This handy, steel gear gauge set consists of 16 leaves — 24 gauges — to measure both 14-1/2° and 20° pressure angle tooth form, in diametral pitch sizes 64,
48, 32, 24, 20, 16, 12, 10, 8, 6, 5 and 4. Pitch sizes 8, 6, 5 and 4 both 14-1/2°
and 20° are cut on individual leaves. Pitch sizes 64 through 10 inclusive, have
both 14-1/2° and 20° pressure angles on a single leaf.
SOLD ONLY AS A COMPLETE SET
ORDER BY CATALOG NUMBER OR ITEM CODE
50
Gear Catalog
Catalog Number
Item Code
Gear Gauge
06000
HELICAL GEARS
SECTION CONTENTS
CATALOG NUMBER / DIMENSIONS ............................................................................................... 52 – 53
SELECTION PROCEDURE ....................................................................................................................... 54
HORSEPOWER & TORQUE RATINGS............................................................................................ 55 – 56
STOCK ALTERED / CUSTOM HELICAL GEARS............................................................................ 87 – 89
HELICAL GEAR ENGINEERING INFORMATION........................................................................ 143 – 145
Gear Catalog
51
HELICAL GEARS
141/2° NORMAL PRESSURE ANGLE
45° HELIX ANGLE
24 THROUGH 10 TRANSVERSE DIAMETRAL PITCH
STEEL—HARDENED
These gears are hardened all over, except as noted. Teeth on all steel gears are
polished.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Keyway
Style
See
Page
153
24
FACE
KEYWAY
TRANSVERSE DIAMETRAL PITCH
8
.333
.1875
*
10
.417
.250
12
.500
**
15
.625
.375
18
.750
20
.833
.500
24
1.000
30
1.250
1/8 x 1/16
36
1.500
48
2.000
.625
60
2.500
72
3.000
A
20
PITCH
DIA.
BORE
TRANSVERSE DIAMETRAL PITCH
8
.400
.250
10
.500
.3125
**
12
.600
.375
15
.750
.4375
20
1.000
.500
1/8 x 1/16
25
1.250
.625
30
1.500
40
2.000
.750
3/16 x 3/32
50
2.500
60
3.000
A
16
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
±.0005
TRANSVERSE DIAMETRAL PITCH
12
.750
.375
1/16 x 1/32
16
1.000
20
1.250
24
1.500
.500
1/8 x 1/16
32
2.000
40
2.500
48
3.000
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 55, 56
Lubrication — 152
Materials — 153
Selection Procedure — 54
A
NOTE: Normal Diametral Pitch is equal to the
Transverse Diametral Pitch divided by the cosine
of the Helix Angle.
Face: 8-15 Teeth = .375"
18-72 Teeth = .250"
H2408R 18268 H2408L
H2410R 18272 H2410L
H2412R 18276 H2412L
H2415R 18280 H2415L
H2418R 18284 H2418L
H2420R 18288 H2420L
H2424R 18292 H2424L
H2430R 18296 H2430L
H2436R† 18300 H2436L†
H2448R† 18304 H2448L†
H2460R† 18308 H2460L†
H2472R† 18312 H2472L†
18270
18274
18278
18282
18286
18290
18294
18298
18302
18306
18310
18314
Face: 8-15 Teeth = .563"
18-72 Teeth = .375"
H2008R 18228 H2008L
H2010R 18232 H2010L
H2012R 18236 H2012L
H2015R 18240 H2015L
H2020R 18244 H2020L
H2025R 18248 H2025L
H2030R† 18252 H2030L†
H2040R† 18256 H2040L†
H2050R† 18260 H2050L†
H2060R† 18264 H2060L†
18230
18234
18238
18242
18246
18250
18254
18258
18262
18266
H1612R
H1616R
H1620R
H1624R†
H1632R†
H1640R†
H1648R†
A
H1212R
H1215R
H1218R†
H1224R†
H1230R†
H1236R†
Gear Catalog
H1612L
H1616L
H1620L
H1624L†
H1632L†
H1640L†
H1648L†
18202
18206
18210
18214
18218
18222
18226
18170
18174
18178
18182
18186
18190
H1212L
H1215L
H1218L†
H1224L†
H1230L†
H1236L†
18168
18172
18176
18180
18184
18188
H1008L
H1010L
H1012L
H1015L†
H1020L†
H1025L†
H1030L†
H1040L†
18128
18132
18136
18140
18144
18150
18152
18156
Face = .875"
A
H1008R
H1010R
H1012R
H1015R†
H1020R†
H1025R†
H1030R†
H1040R†
*1/16" wide x .04" deep slot cut on end of gear for drive pin, not key.
**3/32" wide x .06" deep slot cut on end of gear for drive pin, not key.
†Teeth only hardened.
52
18200
18204
18208
18212
18216
18220
18224
Face = .750"
10
TRANSVERSE DIAMETRAL PITCH
8
.800
.375
1/16 x 1/32
10
1.000
.500
1/8 x 1/16
12
1.200
.625
15
1.500
20
2.000
25
2.500
.750
3/16 x 3/32
30
3.000
40
4.000
LEFT HAND
Catalog
Item
Number Code
Face = .500"
12
TRANSVERSE DIAMETRAL PITCH
12
1.000
15
1.250
18
1.500
.625
1/8 x 1/16
24
2.000
30
2.500
36
3.000
RIGHT HAND
Catalog
Item
Number Code
18130
18134
18138
18142
18146
18148
18154
18158
HELICAL GEARS
141/2° NORMAL PRESSURE ANGLE
45° HELIX ANGLE
8 AND 6 TRANSVERSE DIAMETRAL PITCH
BRONZE AND STEEL—HARDENED
All gears with hubs have setscrew at 90° to keyway. Steel gears have teeth only
hardened, except as noted. Teeth on all steel gears are polished.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Hub
No.
of
Pitch
Teeth Dia. Bore Dia. Proj.
Keyway
Style
RIGHT HAND
See
Page Catalog Item
153 Number Code
LEFT HAND
Catalog Item
Number Code
Face without Hubs = 1.000"
–with Hubs = .750"
TRANSVERSE DIAMETRAL PITCH
Overall Length = Face + Hub Proj.
STEEL–HARDENED
8 1.000 .500 –
–
H808R* 18066 H808L* 18064
1/8 x 1/16
10 1.250 .625 –
–
H810R* 18070 H810L* 18068
12 1.500 .750 –
–
H812R
18074 H812L 18072
16 2.000
A
H816R
18078 H816L 18076
20 2.500 .875 –
H820R
18082 H820L 18080
–
3/16
x
3/32
24 3.000
H824R
18086 H824L 18084
32 4.000
H832R
18090 H832L 18088
8 1.000 .500 .75 .50 1/8 x 1/16
HS808R* 18092 HS808L* 18094
10 1.250 .625 1.00 .50
HS810R* 18096 HS810L* 18098
12 1.500 .750 1.25 .50 3/16 x 3/32
HS812R* 18100 HS812L* 18102
16 2.000
1.62
HS816R 18104 HS816L 18106
20 2.500
A
HS820R 18108 HS820L 18110
24 3.000
HS824R 18112 HS824L 18114
32 4.000 1.000 2.00 .50 1/4 x 1/8
HS832R 18116 HS832L 18118
40 5.000
HS840R 18120 HS840L 18122
48 6.000
2.25
HS848R 18124 HS848L 18126
BRONZE
8 1.000 .500 .75 .50 1/8 x 1/16
HB808R 18356 HB808L 18358
10 1.250 .625 1.00 .50
HB810R 18360 HB810L 18362
12 1.500 .750 1.24 .50 3/16 x 3/32 A
HB812R 18364 HB812L 18366
16 2.000
1.62
HB816R 18368 HB816L 18370
20 2.500
HB820R 18372 HB820L 18374
24 3.000
HB824R 18376 HB824L 18378
32 4.000 1.000 2.00 .50 1/4 x 1/8
HB832R 18380 HB832L 18382
40 5.000
B
HB840R 18384 HB840L 18386
48 6.000
2.25
HB848R 18388 HB848L 18390
Face without Hubs = 1.250"
6
–with Hubs = 1.000"
TRANSVERSE DIAMETRAL PITCH
Overall Length = Face + Hub Proj.
STEEL–HARDENED
8 1.333 .625 –
–
1/8 x 1/16
H608R
18000 H608L 18002
10 1.667 .750 –
–
3/16 x 3/32
H610R
18004 H610L 18006
12 2.000
A
H612R
18010 H612L 18008
15 2.500 1.000 –
H615R
18014 H615L 18012
–
1/4
x
1/8
18 3.000
H618R
18018 H618L 18016
24 4.000
H624R
18022 H624L 18020
8 1.333 .625 1.00 .75 1/8 x 1/16
HS608R 18024 HS608L 18026
9 1.500
1.18
HS609R 18028 HS609L 18030
10 1.667 .750 1.34 .75 3/16 x 3/32
HS610R 18032 HS610L 18034
12 2.000 1.000 1.62 .75 1/4 x 1/8
HS612R 18036 HS612L 18038
15 2.500
2.00
HS615R 18040 HS615L 18042
18 3.000
2.25
A
HS618R 18044 HS618L 18046
20 3.333
HS620R 18048 HS620L 18050
24 4.000 1.250 2.50 .75 5/16 x 5/32
HS624R 18052 HS624L 18054
30 5.000
HS630R 18056 HS630L 18058
36 6.000
HS636R 18060 HS636L 18062
BRONZE
12 2.000 1.000 1.62 .75 1/4 x 1/8
HB612R 18328 HB612L 18330
15 2.500
2.00
HB615R 18332 HB615L 18334
A
18 3.000
2.25
HB618R 18336 HB618L 18338
20 3.333 1.250
HB620R 18340 HB620L 18342
.75
5/16
x
5/32
24 4.000
HB624R 18344 HB624L 18346
2.50
30 5.000
B
HB630R 18348 HB630L 18350
36 6.000
HB636R 18352 HB636L 18354
8
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
BORE
HUB
DIA.
SETSCREW
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
±.0005
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 55, 56
Lubrication — 152
Materials — 153
Selection Procedure — 54
NOTE: Normal Diametral Pitch is equal to the
Transverse Diametral Pitch divided by the cosine
of the Helix Angle.
*Hardened all over.
Gear Catalog
53
HELICAL GEARS
Boston standard stock helical gears are made with a 45° helix angle to transmit
motion and/or power between non-intersecting shafts that are parallel or at 90° to
each other. They are stocked both right and left-handed. For parallel shaft operation, helical gears having opposite hand helix angles are required, while for shafts
at 90° the same hand helix must be used.
For parallel shaft applications, helical gears provide overlapping tooth contact.
This results in a smoother, quieter operation and higher horsepower capacity than
afforded by spur gears of comparable size.
For 90° shaft applications, the tooth contact area is very small which considerably
limits the load capacity. Horsepower ratings are not tabulated in this catalog, for
90° applications.
Boston helical gears are top hobbed, resulting in extremely close concentricity
between the pitch diameter and the outside diameter.
SELECTION PROCEDURE
Approximate horsepower and torque ratings for selected sizes
(numbers of teeth) at various operating speeds (RPM) are
given for hardened steel helical gears. The ratings are based
on the beam strength of the gear tooth. These ratings are for
parallel shaft applications under normal operating conditions,
that is: properly mounted and lubricated, carrying a smooth
load for not more than 10 hours per day or a moderate shock
load not more than 15 minutes in two hours (Service Factor
1.0). Refer to Table 1, below, for other types of service.
Ratings for gear sizes or speeds not listed may be interpolated
from the values indicated. Pitchline velocities are limited as
reflected by the lack of ratings for larger numbers of teeth at
higher RPM’s in the selection chart. Application in this area is
not recommended.
Horsepower ratings for bronze gears are approximately 33%
of these ratings.
1. Determine service factor.
a. Using Application Classification Chart I, pages 155-156
determine service factor or
b. With knowledge of operating conditions and load classification, select service factor from Table 1.
2. Determine Design Horsepower.
Design HP = Application Load ´ Service Factor (Table 1)
3. Select pinion with horsepower capacity equal to (or greater
than) design horsepower determined in Step 2. Reference
Rating Pages 55, 56.
4. Select a driven gear with a catalog rating equal to (or
greater than) the horsepower determined in Step 2.
Ref. Parallel shafts are approximately 98% efficient
90° shafts are approximately 50% efficient
TABLE 1
Service
Factor
.8
1.0
1.25
1.50
1.75
2.0
Operating Conditions
Uniform – not more than 15 minutes in 2 hours.
Moderate Shock – not more than 15 minutes in 2 hours.
Uniform – not more than 10 hours per day.
Moderate Shock – not more than 10 hours per day.
Uniform – more than 10 hours per day.
Heavy Shock – not more than 15 minutes in 2 hours.
Moderate Shock – more than 10 hours per day.
Heavy Shock – not more than 10 hours per day.
Heavy Shock – more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require the use of higher
service factors. Consultation with factory is recommended in these applications.
54
Gear Catalog
HELICAL GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
No.
Teeth
25 RPM
H.P. Torque
50 RPM
H.P. Torque
100 RPM
200 RPM
300 RPM
H.P. Torque H.P. Torque H.P. Torque
600 RPM
900 RPM
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
24 DIAMETRAL PITCH – 33.94 NORMAL DIAMETRAL PITCH HARDENED STEEL
8
10
12
15
18
20
24
30
36
48
60
72
.01
13.5
.01
13.5 .02
13.4 .04
13.2 .06
13.0 .12
12.5 .17
.01
18.0
.01
17.9 .03
17.8 .06
17.4 .08
17.1 .16
16.3 .22
.01
22.5
.02
22.3 .04
22.1 .07
21.6 .10
21.1 .19
20.0 .27
.01
29.1
.02
28.9 .05
28.5 .09
27.8 .13
27.1 .24
25.2 .34
.01
23.6
.02
23.4 .04
23.1 .07
22.4 .10
21.7 .19
19.9 .26
.01
26.8
.02
26.5 .04
26.1 .08
25.2 .12
24.3 .21
22.2 .29
.01
32.6
.03
32.3 .05
31.6 .10
30.3 .14
29.2 .25
26.1 .34
.02
41.3
.03
40.8 .06
39.7 .12
37.8 .17
36.0 .30
31.6 .40
.02
49.9
.04
49.1 .08
47.6 .14
44.9 .20
42.4 .35
36.4 .46
.03
67.0
.05
65.6 .10
63.0 .19
58.3 .26
54.3 .43
45.0 .55
.03
83.8
.06
81.6 .12
77.6 .22
70.7 .31
64.9 .50
52.0 .62
.04
101
.08
97.7 .15
92.1 .26
82.5 .36
74.8 .56
58.3 .68
20 DIAMETRAL PITCH – 28.28 NORMAL DIAMETRAL PITCH HARDENED STEEL
8
.01
29.2
.02
29.1 .05
28.8 .09
28.4 .13
27.9 .25
26.6 .36
10
.01
37.7
.03
37.5 .06
37.1 .12
36.3 .17
35.6 .32
33.5 .45
12
.02
48.5
.04
48.2 .08
47.5 .15
46.4 .22
45.2 .40
42.2 .56
15
.02
62.7
.05
62.2 .10
61.2 .19
59.3 .27
51.6 .50
52.8 .70
20
.02
57.7
.05
57.1 .09
55.9 .17
53.7 .25
51.6 .44
46.2 .60
25
.03
73.8
.06
72.8 .11
70.9 .21
67.4 .31
64.3 .54
56.4 .72
30
.04
89.1
.07
87.6 .13
85.0 .25
80.0 .36
75.7 .62
65.0 .81
40
.05
120
.09
118
.18 113
.33 104
.46
97.2 .77
80.5 .98
50
.06
151
.12
147
.22 139
.40 127
.55
117
.89
93.4 1.11
60
.07
180
.14
175
.26 165
.47 147
.64
134
.99 104
1.22
16 DIAMETRAL PITCH – 22.63 NORMAL DIAMETRAL PITCH HARDENED STEEL
12
.03
67.2
.05
66.6 .10
65.6 .20
63.6 .29
61.7 .54
56.6 .75
16
.04
93.4
.07
92.4 .14
90.5 .28
86.9 .40
83.5 .71
74.8 .97
20
.05
120
.09
118
.18 115
.35 110
.50
104
.87
91.5 1.16
24
.06
146
.11
144
.22 139
.42 131
.59
124
1.00 107
1.33
32
.08
197
.15
193
.29 185
.54 172
.76
160
1.26 132
1.61
40
.10
249
.19
242
.37 230
.67 210
.92
193
1.47 154
1.84
48
.12
298
.23
289
.43 273
.77 244 1.05
221
1.64 173
2.02
12 DIAMETRAL PITCH – 16.97 NORMAL DIAMETRAL PITCH HARDENED STEEL
12
.07
179
.14
177
.27 173
.53 166
.76
160
1.36 143.2 1.85
15
.09
231
.18
228
.35 222
.67 211
.96
201
1.68 176
2.24
18
.11
281
.22
277
.43 268
.80 253 1.14
239
1.95 205
2.57
24
.15
387
.30
379
.58 364
1.07 337 1.49
313
2.47 260
3.16
30
.19
489
.38
477
.72 453
1.31 413 1.80
379
2.89 304
3.62
36
.23
589
.45
571
.85 538
1.53 482 2.08
437
3.24 341
3.99
10 DIAMETRAL PITCH – 14.14 NORMAL DIAMETRAL PITCH HARDENED STEEL
8
.07
181
.14
179
.28 176
.54 171
.79
165
1.44 151
1.78
10
.10
240
.19
238
.37 233
.71 223 1.02
215
1.83 193
2.49
12
.12
300
.23
296
.46 288
.87 275 1.25
262
2.20 231
2.95
15
.15
387
.30
381
.59 369
1.10 348 1.56
329
2.69 282
3.53
20
.21
533
.41
522
.79 501
1.47 464 2.05
432
3.40 357
4.35
25
.27
680
.53
662
1.00 630
1.82 573 2.50
526
4.01 422
5.03
30
.32
818
.63
793
1.19 747
2.12 669 2.89
606
4.50 473
5.54
40
.44 1097
.84 1053
1.55 975
2.69 849 3.58
751
5.32 559
6.36
8 DIAMETRAL PITCH – 11.31 NORMAL DIAMETRAL PITCH HARDENED STEEL
8
.10
242
.19
239
.37 234
.71 225 1.03
216
1.85 194
2.51
10
.13
321
.25
317
.49 309
.93 293 1.33
280
2.53 245
3.12
12
.16
400
.31
394
.61 382
1.14 360 1.62
340
2.78 292
3.65
16
.22
555
.43
543
.83 521
1.53 483 2.14
447
3.54 372
4.53
20
.28
710
.55
692
1.04 658
1.90 599 2.62
550
4.20 441
5.26
24
.34
862
.66
836
1.25 787
2.24 706 3.04
639
4.75 499
5.84
32
.46 1160
.88 1113
1.64 1031
2.85 897 3.78
794
5.63 591
6.72
40
.58 1454
1.10 1383
2.00 1259
3.39 1068 4.41
927
6.32 664
7.39
48
.69 1137
1.30 1636
2.33 1466
3.85 1214 4.93 1036
6.85 719
7.87
.250-.375" FACE
12.0
15.5
18.9
23.5
18.4
20.4
23.7
28.1
31.9
38.4
43.4
47.8
.22
.28
.34
.42
.33
.36
.41
.48
.54
.64
.71
.77
11.6
14.8
17.9
22.0
17.1
18.8
21.6
25.3
28.4
33.5
37.3
40.5
25.4 .46
31.7 .57
39.5 .71
48.8 .86
41.9 .73
50.2 .86
56.9 .96
68.7 1.14
78.0 1.27
85.4 1.38
24.3
30.1
37.1
45.4
38.3
45.2
50.7
59.9
66.9
72.3
52.3
67.8
81.5
93.3
113
129
141
.93 48.6
1.18 62.0
1.40 73.4
1.58 83.0
1.87 98.4
2.11 111
2.28 120
130
157
180
222
254
279
2.26
2.69
3.05
3.68
4.14
4.50
119
142
160
193
218
237
139
174
206
247
305
352
388
445
2.45
3.03
3.55
4.19
5.06
5.75
6.25
7.04
129
159
186
220
266
302
328
370
176
218
256
318
368
409
471
517
551
3.06
3.74
4.34
5.27
6.01
6.59
7.44
8.07
8.50
160
197
228
277
316
346
391
424
447
.31
.39
.46
.56
.43
.47
.53
.60
.66
.76
.83
.89
10.8 .51
8.9
13.6 .62 10.9
16.2 .72 12.6
19.6 .84 14.8
15.0 .62 10.9
16.3 .67 11.7
18.5 .73 12.8
21.1 .81 14.1
23.3 .86 15.1
26.6 .94 16.5
29.0 1.00 17.5
31.0 1.00 18.2
.375-.563" FACE
.64 22.3 1.00 18.0
.78 27.2 1.20 21.2
.95 33.2 1.44 25.1
1.14 39.8 1.66 29.0
.93 32.7 1.30 22.7
1.08 37.7 1.44 25.2
1.19 41.5 1.54 27.0
1.36 47.7 1.69 29.6
1.49 52.1 1.79 31.4
1.58 55.4 1.86 32.5
.500" FACE
1.20 42.6 1.80 31.1
1.51 52.9 2.10 36.7
1.75 61.3 2.34 41.0
1.94 68.1 2.52 44.2
2.24 78.4 2.78 48.7
2.46 86.2 3.00 51.8
2.62 91.8 3.08 53.9
.750" FACE
2.89 101
4.01 70.2
3.37 118
4.51 79.0
3.75 131
4.86 85.1
4.39 154
5.45 95.5
4.84 170
5.82 102
5.17 181
6.08 106
.875" FACE
3.20 112
4.62 80.9
3.88 136
5.39 94.4
4.46 156
6.01 105
5.16 181
6.69 117
6.05 212
7.51 131
6.72 235
8.09 142
7.18 252
8.44 148
7.89 276
8.97 157
.750" FACE
3.91 137
5.43 95
4.69 164
6.27 110
5.33 187
6.92 121
6.30 221
7.82 137
7.03 246
8.45 148
7.57 265
8.90 156
8.34 292
8.88 311
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line exceed 1500 Feet per Minute and should be used for interpolation purposes only.
*Torque Rating (Lb. Ins.)
Gear Catalog
55
HELICAL GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
No.
Teeth
25 RPM
H.P. Torque
50 RPM
H.P. Torque
100 RPM
200 RPM
300 RPM
H.P. Torque H.P. Torque H.P. Torque
600 RPM
900 RPM
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
8 DIAMETRAL PITCH – 11.31 NORMAL DIAMETRAL PITCH HARDENED STEEL
8
10
12
16
20
24
32
.13
323
.25
319
.50 313
.95 300 1.4
288
2.5
258
3.3
234
.17
428
.34
422
.65 412
1.20 391 1.8
373
3.1
327
4.2
291
.21
534
.42
525
.81 509
1.50 480 2.2
453
3.7
389
4.9
341
.29
740
.57
725
1.1
696
2.00 644 2.9
599
4.7
496
6.1
423
.38
947
.73
923
1.4
877
2.50 799 3.5
733
5.6
588
7.0
491
.46 1150
.88 1114
1.7 1050
3.00 941 4.1
852
6.3
665
7.7
545
.61 1547
1.20 1485
2.2 1374
3.80 1196 5.0
1059
7.5
788
9.0
628
8 DIAMETRAL PITCH – 11.31 NORMAL DIAMETRAL PITCH BRONZE
8
.04
97
.08
95.8 .15
93.8 .29
90.0 .41
86.5 .74
77.5 1.00
70.2
10
.05
128
.10
127
.20 123
.37 117
.53
112
.93
98.1 1.25
87.3
12
.06
160
.12
158
.24 153
.46 144
.65
136
1.11 117
1.46 102
16
.09
222
.17
217
.33 209
.61 193
.86
180
1.42 149
1.81 127
20
.11
284
.22
277
.42 263
.76 240 1.05
220
1.68 176
2.10 147
24
.14
345
.27
334
.50 315
.90 282 1.22
256
1.90 199
2.33 163
32
.18
464
.35
445
.65 412
1.14 359 1.51
318
2.75 236
2.69 188
40
.23
582
.44
553
.80 504
1.36 427 1.76
371
2.53 266
2.95 207
48
.28
695
.52
655
.93 587
1.54 486 1.97
414
2.74 288
3.15 220
6 DIAMETRAL PITCH – 8.48 NORMAL DIAMETRAL PITCH HARDENED STEEL
8
.01
572
.45
564
.87 548
1.65 520 2.35
494
4.09 430
5.44 381
9
.26
664
.52
653
1.00 633
1.89 597 2.68
564
4.61 484
6.06 424
10
.30
758
.59
745
1.14 720
2.14 674 3.02
634
5.11 537
6.66 466
12
.37
944
.73
924
1.41 887
2.61 821 3.64
764
6.02 633
7.71 540
15
.48 1217
.94 1185
1.79 1127
3.26 1026 4.48
942
7.19 755
9.00 630
18
.59 1478
1.14 1433
2.14 1350
3.84 1210 5.22 1096
8.14 855 10.00 700
20
.66 1670
1.28 1613
2.40 1511
4.25 1340 5.73 1204
8.79 924 10.69 749
24
.80 2024
1.54 1942
2.85 1798
4.97 1565 6.60 1386
9.82 1031 11.72 821
30
1.01 2546
1.92 2420
3.50 2203
5.93 1868 7.72 1622 11.06 1162 12.92 905
36
1.21 3048
2.28 2872
4.08 2573
6.76 2131 8.65 1818 12.02 1262 13.81 967
6 DIAMETRAL PITCH – 8.48 NORMAL DIAMETRAL PITCH HARDENED STEEL
8
.28
715
.56
705
1.09 685
2.06 650 2.94
617
5.12 537
6.79 476
10
.38
948
.74
931
1.43 899
2.67 842 3.77
792
6.39 672
8.32 583
12
.47 1180
.92 1155
1.76 1109
3.26 1026 4.55
955
7.53 791
9.64 675
15
.60 1521
1.18 1482
2.24 1409
4.07 1282 5.60 1177
8.99 944 11.25 788
18
.73 1848
1.42 1791
2.68 1687
4.80 1512 6.52 1370 10.17 1068 12.50 876
24
1.00 2529
1.93 2428
3.57 2247
6.21 1956 8.24 1732 12.27 1289 14.65 1026
6 DIAMETRAL PITCH – 8.48 NORMAL DIAMETRAL PITCH BRONZE
12
.15
378
.29
370
.56 355
1.04 328 1.46
306
2.41 253
3.08 216
15
.19
487
.38
474
.72 451
1.30 410 1.79
377
2.88 302
3.60 252
18
.23
591
.45
513
.86 540
1.54 484 2.09
439
3.25 342
4.00 280
20
.26
668
.51
645
.96 604
1.70 536 2.29
482
3.52 369
4.28 300
24
.32
810
.62
777
1.14 719
1.99 626 2.64
554
3.93 412
4.69 328
30
.40 1018
.77
968
1.40 881
2.37 747 3.09
649
4.42 465
5.17 362
36
.48 1219
.91 1149
1.63 1029
2.70 852 3.46
727
4.81 505
5.52 387
1.000" FACE
4.1
5.0
5.8
7.0
8.0
8.8
9.9
1.22
1.50
1.73
2.11
2.41
2.64
2.98
3.23
3.40
6.50
7.19
7.84
8.97
10.30
11.30
11.99
12.98
14.11
14.92
8.13
9.80
11.21
12.87
14.12
16.23
3.59
4.12
4.52
4.80
5.19
5.65
5.97
214
262
304
370
421
462
521
5.2
6.3
7.1
8.4
9.3
10.1
11.1
183
219
249
294
328
352
389
7.2
8.4
9.2
10.4
11.1
11.9
12.7
.750" FACE
64.2 1.56 54.8 2.17
78.7 1.88 65.7 2.51
91.1 2.13 74.7 2.77
111
2.52 88.2 3.13
126
2.81 98.4 3.38
138
3.03 106
3.56
156
3.34 117
169
3.55 124
179
1.000" FACE
342
8.09 283
10.70
378
8.84 310
11.47
412
9.54 334
12.17
471 10.71 375
13.29
541 12.04 421
14.48
593 12.98 454
15.25
630 13.65 478
682 14.55 510
741 15.54 544
783
1.250" FACE
427 10.11 354
13.37
515 11.93 418
15.22
589 13.38 469
16.61
676 15.04 527
18.10
742 16.22 568
19.06
852 18.19 637
1.000" FACE
188
4.28 150
5.32
216
4.81 169
5.79
237
5.19 182
6.10
252
5.46 191
273
5.82 204
296
6.22 218
313
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line exceed 1500 Feet per Minute and should be used for interpolation purposes only.
*Torque Rating (Lb. Ins.)
56
Gear Catalog
127
146
162
182
197
208
221
38.0
43.9
48.4
54.7
59.2
62.3
187
201
213
233
253
267
234
266
291
317
334
93.1
101
107
MITER AND BEVEL GEARS
SECTION CONTENTS
CATALOG NUMBER / DIMENSIONS
MITER GEAR ........................................................................................................................... 58 – 60
SPIRAL MITER GEAR ...................................................................................................................... 61
BEVEL GEAR............................................................................................................................ 62 – 65
SPIRAL BEVEL GEAR ..................................................................................................................... 66
SELECTION PROCEDURE .......................................................................................................................67
HORSEPOWER AND TORQUE RATINGS
MITER GEAR ........................................................................................................................... 68 – 69
BEVEL GEAR.................................................................................................................................... 70
SPIRAL MITER GEAR ...................................................................................................................... 71
SPIRAL BEVEL GEAR ..................................................................................................................... 71
STOCK ALTERED / CUSTOM MITER AND BEVEL GEARS .......................................................... 87 – 89
MITER / BEVEL GEAR ENGINEERING INFORMATION............................................................. 146 – 148
Gear Catalog
57
MITER GEARS
48 THROUGH 20 DIAMETRAL PITCH
1:1 RATIO 20° PRESSURE ANGLE
NYLON, BRASS, STAINLESS STEEL AND STEEL—UNHARDENED
All gears have “Coniflex”® tooth form, except as noted.
MOUNTING
DISTANCE
FACE
PITCH
DIA.
D
HUB
PROJ.
BORE
HUB
DIA.
REFERENCE PAGES
STANDARD TOLERANCES*
DIMENSION
Alterations — 152
Lubrication — 152
Materials — 153
BORE
TOLERANCE
All
±.0005
*Brass and Steel only.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No. of
Teeth
Pitch
Dia.
Face
Bore
MD
*
D
Hub
Dia. Proj.
48
Catalog
Number
Item
Code
.375
.25
.33
.31
.38
.13
.19
.16
.25
MOLDED
NYLON
GP4815†‡ 54096
GP4818Y† 54097
—
—
GP4824Y† 54098
.349
.406
.427
.41
.50
.50
.19
.19
.25
GP3216Y† 54099
GP3224Y† 54100
—
—
.500
.349
.41
.19
DIAMETRAL PITCH
15
.312
.07
.125
.312
.215
18
.375
.08
.125
.406
.286
24
.500
.08
.1875
.531
DIAMETRAL PITCH
16
.500
.12
.1875
.500
24
.1875
.688
.1875
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog Item
Number Code
BRASS
G460Y† 12126
—
—
G461Y† 12128
—
—
STAINLESS
STEEL
STEEL
UNHARDENED
GSS460Y† 49984
—
—
—
—
—
—
GSS461Y† 49985 L94Y† 12140
—
—
—
—
G462Y†
—
G463Y†
12114
—
12116
GSS462Y† 49986
—
—
GSS461Y† 49987
—
—
—
—
G464Y
G465Y
G466Y
—
12100
12102
12104
—
—
32
.750
.14
L97Y†
—
L95Y†
12146
—
12142
—
L93Y
12138
—
—
—
—
—
—
—
—
—
L96Y
—
—
—
12144
—
—
—
—
L98Y
12148
30
DIAMETRAL PITCH
15
.500
.12
—
—
24
DIAMETRAL PITCH
24
1.000
.20
.250
.906
.567
.62
30
36
1.250
1.500
.23
.23
.250
.3125
1.031
1.188
.590
.620
.62
.69
.19
.28
.31
.31
.250
.672
.489
.50
.31
GP2424Y† 54101
—
—
GP2430Y† 54102
GP2436Y† 54103
20
DIAMETRAL PITCH
12
.600
.13
—
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
†Not “Coniflex” tooth form. Can be furnished with “Coniflex” tooth on special order.
‡Acetal.
58
Gear Catalog
—
MITER GEARS
16 THROUGH 10 DIAMETRAL PITCH
1:1 RATIO 20° PRESSURE ANGLE
NYLON AND STEEL—UNHARDENED AND HARDENED
All gears have “Coniflex”® tooth form, except as noted.
All hardened steel gears have teeth only hardened, except as
noted, and are equipped with standard keyways and setscrews
MOUNTING
DISTANCE
KEYWAY
FACE
PITCH
DIA.
D
SETSCREW
HUB
PROJ.
BORE
HUB
DIA.
REFERENCE PAGES
STANDARD TOLERANCES*
Alterations — 152
Horsepower Ratings — 68, 69
Lubrication — 152
Materials — 153
Selection Procedure — 67
DIMENSION
BORE
Pitch
Dia.
Face
Bore
MD
*
D
Dia.
Hub
Proj.
16
DIAMETRAL PITCH
12
.750
.16
16
1.000
.23
20
1.250
.28
24
1.500
.32
32
2.000
.39
±.0005
*Steel only.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No. of
Teeth
TOLERANCE
All
.3125
.375
.4375
.500
.500
.812
1.062
1.250
1.375
1.562
.583
.755
.849
.880
.875
.62
.75
1.00
1.00
1.25
.38
.44
.50
.50
.38
.375
.4375
1.062
.739
.88
.50
1.250
.864
1.00
.50
1.500
1.021
1.25
.63
1.750
1.192
1.38
.69
1.875
2.312
1.224
1.489
1.31
1.62
.69
.84
2.000
1.364
1.62
.81
2.438
1.630
2.00
.94
Catalog
Number
Item
Code
MOLDED
NYLON
—
—
GP1616Y† 54104
—
—
—
—
GP1632Y†‡ 54105
NO KEYWAY
OR SETSCREW
Catalog
Number
Item
Code
STEEL
UNHARDENED
L99Y
12150
L110Y
12174
L111Y
12176
L112Y
12156
—
—
Catalog
Number
Item
Code
STEEL
HARDENED
—
—
HLK110Y** 12326
—
—
—
—
—
—
14
DIAMETRAL PITCH
14
1.000
.20
—
—
—
—
L124Y
L100Y
12202
12152
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
L125Y
L126Y
L101Y
L127Y
L102Y
L119Y
L120Y
L121Y
L133Y
L113Y
L114Y
12204
12206
12154
12208
12158
12190
12192
12194
12218
12178
12180
—
—
HLK101Y**
—
HLK102Y
—
—
HLK121Y
—
—
HLK114Y
—
—
12328
—
12330
—
—
12334
—
—
12332
—
—
—
—
—
—
—
—
—
—
—
—
L128Y
L129Y
L103Y
L130Y
L104Y
L131Y
12210
12212
12160
12214
12162
12216
—
HLK129Y
HLK103Y
HLK130Y
HLK104Y
HLK131Y
—
12348
12344
12350
12346
12352
12
DIAMETRAL PITCH
15
1.250
.29
18
1.500
.33
21
1.750
.40
24
30
2.000
2.500
.44
.55
.375
.4375
.500
.500
.625
.500
.5625
.625
.750
.500
.625
10
DIAMETRAL PITCH
20
2.000
.45
25
2.500
.56
.500
.625
.750
.750
.875
1.000
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
†Not “Coniflex” tooth form.
**Hardened all over.
‡Nylon (Mineral Filled).
Gear Catalog
59
MITER GEARS
8 THROUGH 4 DIAMETRAL PITCH
1:1 RATIO 20° PRESSURE ANGLE
STEEL—UNHARDENED AND HARDENED AND CAST IRON
All gears have “Coniflex”® tooth form, except as noted.
All hardened steel gears have teeth only hardened, except as
noted, and are equipped with standard keyways and setscrews.
All unhardened steel gears have no keyway and no setscrew.
MOUNTING
DISTANCE
KEYWAY
FACE
PITCH
DIA.
D
SETSCREW
HUB
PROJ.
BORE
HUB
DIA.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 68, 69
Lubrication — 152
Materials — 153
Selection Procedure — 67
STANDARD TOLERANCES
DIMENSION
BORE
All
Catalog
Number
Item
Code
TOLERANCE
±.0005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No. of
Teeth
Pitch
Dia.
Face
Bore
MD
*
D
Dia.
Hub
Proj.
8
DIAMETRAL PITCH
.66
24
3.000
.68
28
3.500
.77
32
4.000
.77
.85
.85
.750
1.000
1.250
1.000
1.1875
1.250
.875
1.000
.875
2.562
1.583
1.75
.81
2.750
1.786
2.50
1.00
3.250
2.099
2.50
1.25
2.875
3.625
3.438
1.724
2.286
2.098
2.00
3.00
2.25
.88
1.13
1.12
3.625
2.317
3.00
1.31
4.125
2.630
3.25
1.50
4.250
4.625
2.640
2.605
2.50
2.88
1.38
1.19
4.625
3.005
3.50
1.75
5.500
2.660
3.75
1.00
5.500
3.567
4.00
1.94
6.000
3.630
5.00
1.94
Catalog
Number
Item
Code
Catalog
Number
Item
Code
STEEL
UNHARDENED
L115Y
12182
L105Y-A 12164
L116Y
12184
L117Y
12186
L132Y
12196
L106Y
12166
—
—
L123Y
12200
—
—
STEEL
HARDENED
HLK115Y
12366
HLK105YA 12362
HLK116Y
12368
HLK117Y
12370
HLK132Y
12374
HLK106Y
12364
—
—
HLK123Y
12372
—
—
CAST IRON
—
—
—
—
—
—
—
—
—
—
—
—
OA828Y-1 12418
—
—
OA832Y-1 12420
L118Y
L107Y
L134Y
L135Y
—
—
12188
12168
12220
12222
—
—
HLK118Y
HLK107Y
—
—
—
—
12386
12384
—
—
—
—
OA624Y†
—
—
—
OA630Y-1
OA636Y-1
12412
—
—
—
12414
12416
L122Y
L136Y
L108Y
—
12198
12224
12170
—
HLK122Y
—
HLK108Y
—
12398
—
12396
—
—
OA525Y
—
OA540Y-1
—
12408
—
12410
L137Y
L109Y
L138Y
12226
12172
12228
—
HLK109Y
—
—
12404
—
—
OA424Y**
—
—
12406
—
6
DIAMETRAL PITCH
24
4.000
.87
27
4.500
.96
30
36
5.000
6.000
1.16
1.28
1.250
1.500
1.250
1.500
1.000
1.125
5
DIAMETRAL PITCH
25
5.000
1.12
40
8.000
1.50
1.375
1.500
1.750
1.375
4
DIAMETRAL PITCH
24
6.000
1.35
28
7.000
1.43
1.500
1.750
2.000
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
†Hub Dia. — 2.750"
**Hub Proj. — 2.000"
60
Gear Catalog
SPIRAL MITER GEARS
18 THROUGH 5 DIAMETRAL PITCH
STEEL—UNHARDENED AND HARDENED
1:1 RATIO 20° PRESSURE ANGLE
35° SPIRAL ANGLE
All hardened steel gears have teeth only hardened, except as
noted, and are equipped with standard keyways and setscrews
MOUNTING
DISTANCE
FACE
PITCH
DIA.
D
HUB
PROJ.
BORE
HUB
DIA.
REFERENCE PAGES
STANDARD TOLERANCES
DIMENSION
Alterations — 152
Horsepower Ratings — 71
Lubrication — 152
Materials — 153
Selection Procedure — 67
BORE
TOLERANCE
All
±.0005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No. of
Teeth
Pitch
Dia.
Face
Bore
MD
*
D
Dia.
Hub
Proj.
18
DIAMETRAL PITCH
18
1.000
.22
.375
1.062
.739
.75
.44
Catalog
Number
Item
Code
Catalog
Number
Item
Code
STEEL
UNHARDENED
LSA110Y-R
12310
LSA110Y-L
12312
STEEL
HARDENED
HLSK110Y-R†
12322
HLSK110Y-L†
12324
LSA101Y-R
LSA101Y-L
LSA102Y-R
LSA102Y-L
12282
12284
12286
12288
HLSK101Y-R†
HLSK101Y-L†
HLSK102Y-R
HLSK102Y-L
12336
12338
12340
12342
LSA103Y-R
LSA103Y-L
LSA104Y-R
LSA104Y-L
12290
12292
12294
12296
HLSK103Y-R
HLSK103Y-L
HLSK104Y-R
HLSK104Y-L
12354
12356
12358
12360
LSA106Y-R
LSA106Y-L
12302
12304
HLSK106Y-R
HLSK106Y-L
12376
12378
LSA105YA-R
LSA105YA-L
12298
12300
HLSK105YA-R
HLSK105YA-L
12380
12382
12
DIAMETRAL PITCH
15
1.250
.30
.500
1.250
.864
1.00
.50
18
1.500
.34
.625
1.500
1.021
1.25
.56
10
DIAMETRAL PITCH
20
2.000
.47
.750
2.000
1.364
1.62
.78
25
2.500
.58
.875
2.438
1.630
2.00
.91
1.1875
3.250
2.099
2.50
1.25
1.000
2.750
1.786
2.50
.88
3.625
2.317
3.00
1.31
LSA118Y-R
LSA118Y-L
LSA107Y-R
LSA107Y-L
12314
12316
12306
12308
HLSK118Y-R
HLSK118Y-L
HLSK107Y-R
HLSK107Y-L
12392
12394
12388
12390
4.625
3.005
3.50
1.75
LSA122Y-R
LSA122Y-L
12318
12320
HLSK122Y-R
HLSK122Y-L
12400
12402
8
DIAMETRAL PITCH
28
3.500
.78
7
DIAMETRAL PITCH
21
3.000
.69
6
DIAMETRAL PITCH
1.250
24
4.000
.89
1.500
5
DIAMETRAL PITCH
25
5.000
1.15
1.375
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
†Hardened all over.
Gear Catalog
61
BEVEL GEARS
48 THROUGH 20 DIAMETRAL PITCH
BRASS AND STAINLESS STEEL AND STEEL —
HARDENED AND UNHARDENED
20° PRESSURE ANGLE
All gears have “Coniflex”® tooth form, except as noted. All
hardened steel gears have teeth only hardened and are
equipped with standard keyways and setscrews, except as
noted.
MOUNTING
DISTANCE
KEYWAY
D
FACE
PITCH
DIA.
MOUNTING
DISTANCE
D
BORE
HUB
DIA.
SETSCREW
HUB
PROJ.
PITCH
DIA.
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
All
±.0005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Ratio
No. of
Teeth
Pitch
Dia.
Face
Bore
MD
*
D
Hub
Dia.
Proj.
Catalog
Number
Item
Code
48
DIAMETRAL PITCH
36
.750
2:1
18
.375
36
.750
3:1
12
.250
12136
12134
12132
12130
12120
12118
12108
12106
GSS481Y-G†
GSS481Y-P†
GSS486Y-G†
GSS486Y-P†
49993
49992
49995
49994
—
—
—
—
—
—
—
—
.1875
.125
.1875
.125
.438
.594
.375
.562
.257
.335
.257
.285
.44
.28
.44
.22
.19
.19
.19
.17
.14
.1875
.24
.3125
.1875
.594
.719
.688
1.250
.382
.365
.445
.500
.56
.38
1.00
.38
.25
.17
.31
.22
G481Y-G†
G481Y-P†
G486Y-G†
G486Y-P†
.24
.250
.1875
.3125
.250
.781
1.062
.938
1.375
.460
.540
.507
.630
.88
.56
1.12
.69
.31
.25
.31
.28
G485Y-G
12124
G485Y-P
12122
G487Y-G
12112
G487Y-P
12110
STEEL
UNHARDENED
L147Y-G
12234
L147Y-P
12236
—
—
—
—
.09
Item
Code
STAINLESS
STEEL
GSS479Y-G†
49991
GSS479Y-P†
49990
GSS478Y-G†
49989
GSS478Y-P†
49988
BRASS
G479Y-G†
G479Y-P†
G478Y-G†
G478Y-P†
.12
Catalog
Number
32
DIAMETRAL PITCH
32
1.000
2:1
16
.500
64
2.000
4:1
16
.500
24
DIAMETRAL PITCH
36
1.500
18
.750
2:1
48
2.000
24
1.000
.26
20
DIAMETRAL PITCH
20
1.000
10
.500
2:1
20
1.000
10
.500
.18
.18
.375
.1875
.375
.1875
.688
.750
.688
.750
.460
.425
.460
.425
.75
.41
.75
.41
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
†Not “Coniflex” tooth form. Can be furnished with “Coniflex” tooth on special order.
‡These gears have No. 47 (.0785) drilled hole in hub. No keyway or setscrew.
62
Gear Catalog
.31
.25
.31
.25
STEEL
HARDENED
—
—
—
—
HL147Y-G‡
11854
HL147Y-P‡
11856
BEVEL GEARS
16 THROUGH 12 DIAMETRAL PITCH
STEEL—UNHARDENED AND HARDENED
AND CAST IRON
20° PRESSURE ANGLE
All gears have “Coniflex”® tooth form.
All Hardened steel gears have teeth only hardened and are
equipped with standard keyways and setscrews.
MOUNTING
DISTANCE
D
FACE
PITCH
DIA.
MOUNTING
DISTANCE
D
BORE
HUB
DIA.
HUB
PROJ.
PITCH
DIA.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 70
Lubrication — 152
Materials — 153
Selection Procedure — 67
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
All
±.0005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Ratio
No. of
Teeth
Pitch
Dia.
Face
Bore
MD
*
D
Hub
Dia.
Proj.
16
DIAMETRAL PITCH
24
1.500
16
1.000
1-1/2:1
24
1.500
16
1.000
24
1.500
12
.750
2:1
32
2.000
16
1.000
48
3.000
3:1
16
1.000
64
4.000
4:1
16
1.000
96
6.000
6:1
16
1.000
.26
.26
.20
.19
.36
.42
.49
.62
.500
.375
.500
.375
.500
.375
.500
.375
.625
.4375
.625
.500
.625
.500
1.188
1.250
1.188
1.250
1.000
1.125
1.188
1.500
1.312
2.000
1.375
2.500
1.688
3.750
.760
.740
.750
.740
.625
.575
.775
.845
.882
.920
.898
.990
1.257
1.375
1.12
.81
1.12
.81
1.00
.66
1.12
.81
1.50
.88
2.25
.81
1.75
.94
.56
.44
.56
.44
.44
.34
.50
.44
.56
.47
.56
.47
.88
.72
Catalog Item
Number Code
STEEL
UNHARDENED
L146Y-G 12230
L146Y-P 12232
—
—
—
—
L148Y-G 12238
L148Y-P 12240
L149Y-G 12242
L149Y-P 12244
—
—
—
—
—
—
—
—
—
—
—
—
Catalog
Number
Item
Code
STEEL
HARDENED
—
—
—
—
HL146Y-G 11850
HL146Y-P 11852
HL148Y-G 11858
HL148Y-P 11860
HL149Y-G 11862
HL149Y-P 11864
—
—
—
—
—
—
—
—
—
—
—
—
Catalog
Number
Item
Code
CAST IRON GEARS
STEEL PINIONS
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
PA3316Y-G 12484
PA3316Y-P 12486
PA4416Y-G 12492
PA4416Y-P 12494
PA6616Y-G 12516
PA6616Y-P 12518
14
DIAMETRAL PITCH
28
2.000
2:1
14
1.000
.36
.35
.500
.375
.500
1.375
.945
1.62
.66
1.625
.965
.81
.56
1.750
1.135
1.50
.78
1.875
1.875
2.375
1.875
1.130
1.275
1.385
1.275
1.25
2.12
1.31
2.12
.66
.88
.81
.88
2.375
1.375
1.31
.81
L150Y-G 12246 HL150Y-G 11866
—
—
HL150Y-P 11868
L150Y-P 12248
—
—
—
—
—
—
—
—
L151Y-G
—
L151Y-P
L152BY-G
L152BY-P
L152Y-G
—
L152Y-P
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
12
DIAMETRAL PITCH
1-1/2:1
2:1
27
2.250
.42
18
36
18
36
1.500
3.000
1.500
3.000
.41
.54
.54
.54
18
1.500
.53
.500
.750
.500
.625
.500
1.000
.625
.750
12250
—
12254
12260
12262
12256
—
12258
—
HL151Y-G
HL151Y-P
—
—
HL152Y-G
HL152Y-P
—
—
11870
11872
—
—
11874
11876
—
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
Continued next page
Gear Catalog
63
BEVEL GEARS
12 AND 10 DIAMETRAL PITCH
STEEL—UNHARDENED AND HARDENED
AND CAST IRON
20° PRESSURE ANGLE
All gears have “Coniflex”® tooth form.
All Hardened steel gears have teeth only hardened and are
equipped with standard keyways and setscrews.
MOUNTING
DISTANCE
D
FACE
PITCH
DIA.
MOUNTING
DISTANCE
D
BORE
HUB
DIA.
HUB
PROJ.
PITCH
DIA.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 70
Lubrication — 152
Materials — 153
Selection Procedure — 67
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
±.0005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Ratio
No. of
Teeth
Pitch
Dia.
Face
Bore
MD
*
D
Hub
Dia. Proj.
Catalog Item
Number Code
STEEL
UNHARDENED
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
12
DIAMETRAL PITCH
36
3.000
18
1.500
2:1
48
4.000
24
2.000
54
4.500
3:1
18
1.500
72
6.000
4:1
18
1.500
72
6.000
6:1
12
1.000
.47
.59
.60
.61
.74
.625
.500
.625
.500
.625
.500
.750
.500
.750
.500
1.500
2.250
2.000
2.875
1.750
3.000
2.000
3.750
1.750
3.750
1.882
1.205
1.180
1.440
1.063
1.350
1.320
1.365
1.320
1.495
1.44
1.25
1.63
1.50
1.75
1.25
2.00
1.25
2.00
.94
.50
.69
.75
.69
.95
.72
.95
.72
.750
1.000
.750
.875
.750
1.250
.875
2.250
1.445
2.50
1.00
2.500
2.500
3.125
2.500
3.125
2.625
3.375
2.750
4.375
2.750
4.375
2.250
3.875
2.500
5.500
1.525
1.695
1.805
1.695
1.805
1.600
1.555
1.865
2.155
1.913
2.155
1.632
1.610
1.820
1.870
1.75
3.00
1.75
3.00
1.75
2.00
2.00
3.00
1.75
3.00
1.75
2.50
1.44
2.75
1.44
.91
1.19
1.06
1.19
1.06
1.00
.75
1.38
1.31
1.38
1.31
1.13
.84
1.31
.97
.75
Catalog
Number
Item
Code
STEEL
HARDENED
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Catalog
Number
Item
Code
CAST IRON GEARS
STEEL PINIONS
PA3212Y-G 12480
PA3212Y-P 12482
PA4212Y-G 12488
PA4212Y-P 12490
PA45312Y-G 12532
PA45312Y-P 12534
PA6412Y-G 12508
PA6412Y-P 12510
PA6612Y-G 12512
PA6612Y-P 12514
10
DIAMETRAL PITCH
1 1/2:1
2:1
3:1
4:1
6:1
30
3.000
20
40
20
40
20
50
25
60
20
60
20
60
15
90
15
2.000
4.000
2.000
4.000
2.000
5.000
2.500
6.000
2.000
6.000
2.000
6.000
1.500
9.000
1.500
.58
.58
.72
.72
.71
.750
.79
1.000
.875
.875
.750
.875
.625
1.000
.625
.79
.73
.86
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
64
Gear Catalog
L153Y-G
—
L153Y-P
L155Y-G
L155Y-P
—
—
—
—
L157Y-G
L157Y-P
—
—
—
—
—
—
12264
—
12266
12268
12270
—
—
—
—
12274
12276
—
—
—
—
—
—
—
HL153Y-G
HL153Y-P
—
—
HL155Y-G
HL155Y-P
—
—
—
—
—
—
—
—
—
—
—
11878
11880
—
—
11882
11884
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
PA5210Y-G
PA5210Y-P
—
—
PA6310Y-G
PA6310Y-P
PA6410Y-G
PA6410Y-P
PA9610Y-G
PA9610Y-P
—
—
—
—
—
—
—
12496
12498
—
—
12500
12502
12504
12506
12524
12526
BEVEL GEARS
8 THROUGH 4 DIAMETRAL PITCH
STEEL—UNHARDENED AND HARDENED
AND CAST IRON
20° PRESSURE ANGLE
All gears have “Coniflex”® tooth form.
All Hardened steel gears have teeth only hardened and are
equipped with standard keyways and setscrews.
MOUNTING
DISTANCE
KEYWAY
D
FACE
PITCH
DIA.
MOUNTING
DISTANCE
D
BORE
HUB
DIA.
SETSCREW
HUB
PROJ.
PITCH
DIA.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 70
Lubrication — 152
Materials — 153
Selection Procedure — 67
Ratio
No. of
Teeth
Pitch
Dia.
STANDARD TOLERANCES
DIMENSION
BORE
Face
Bore
MD
*
D
Dia.
Hub
Proj.
8
3:1
4:1
TOLERANCE
±.0005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
40
5.000
.83
20
40
20
48
16
64
16
72
18
2.500
5.000
2.500
6.000
2.000
8.000
2.000
9.000
2.250
.83
.83
.84
.85
1.23
Catalog Item
Number Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
2.875
1.850
3.00
1.25
4.000
2.875
4.000
2.375
4.250
2.750
5.250
3.250
5.750
2.290
1.850
2.290
1.632
2.085
1.882
2.105
2.320
2.470
2.12
3.00
2.12
2.75
1.75
2.75
1.88
3.00
2.13
1.41
1.25
1.41
1.00
1.19
1.25
1.22
1.69
1.22
STEEL
STEEL
CAST IRON GEARS
UNHARDENED
HARDENED
STEEL PINIONS
L156Y-G 12252
—
—
—
—
—
—
HL156Y-G 11886
—
—
L156Y-P 12272 HL156Y-P 11888
—
—
—
—
—
—
PA528Y-G 12424
—
—
—
—
PA528Y-P 12426
—
—
—
—
PA638Y-G 12436
—
—
—
—
PA638Y-P 12438
—
—
—
—
PA848Y-G 12452
—
—
—
—
PA848Y-P 12454
—
—
—
—
PA948Y-G 12460
—
—
—
—
PA948Y-P 12462
1.750
1.125
1.125
1.000
1.125
1.000
1.125
1.000
1.125
.875
3.500
4.750
3.500
4.750
3.500
4.750
3.750
5.000
3.438
5.438
3.000
5.250
2.260
2.765
2.260
2.765
2.260
2.765
2.305
2.515
1.898
2.560
2.132
2.575
3.25
2.50
3.25
2.50
3.25
2.50
3.50
2.50
3.25
2.62
3.25
2.12
1.50
1.59
1.50
1.59
1.50
1.59
1.50
1.25
1.00
1.25
1.25
1.44
L158Y-G 12278
—
—
—
L158Y-P 12280
—
—
—
—
—
HL158Y-G 11890
—
—
—
HL158Y-P 11892
—
—
—
—
—
PA626Y-G
—
—
—
—
PA626Y-P
—
—
—
—
PA726Y-G
—
—
—
—
PA726Y-P
—
—
—
—
PA826Y-G
—
—
—
—
PA826-Y-P
—
—
—
—
PA7536Y-G
—
—
—
—
PA7536Y-P
1.125
1.000
1.250
1.000
3.500
4.375
3.750
5.875
2.257
2.390
2.507
2.685
3.25
2.62
3.75
2.62
1.38
1.28
1.69
1.31
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
PA625Y-G
PA625Y-P
PA935Y-G
PA935Y-P
12428
12430
12456
12458
1.125
1.125
4.250
6.000
2.695
3.350
3.75
3.25
1.56
1.81
—
—
—
—
—
—
—
—
PA824Y-G
PA824Y-P
12444
12446
DIAMETRAL PITCH
2:1
All
1.000
1.500
1.000
1.000
.875
.875
.750
1.000
.875
1.125
.875
6
DIAMETRAL PITCH
36
6.000
18
3.000
36
6.000
18
3.000
36
6.000
2:1
18
3.000
42
7.000
21
3.500
48
8.000
24
4.000
45
7.500
3:1
15
2.500
1.07
1.06
1.07
1.06
1.07
1.06
1.18
1.08
1.125
—
—
—
—
12432
12434
12440
12442
12448
12450
12520
12522
5
DIAMETRAL PITCH
30
6.000
2:1
15
3.000
45
9.000
3:1
15
3.000
1.05
1.32
4
DIAMETRAL PITCH
32
8.000
2:1
16
4.000
1.40
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
Gear Catalog
65
SPIRAL BEVEL GEARS
30 THROUGH 8 DIAMETRAL PITCH
STEEL—UNHARDENED AND HARDENED
20° PRESSURE ANGLE
35° SPIRAL ANGLE
All Hardened steel gears have teeth only hardened and are
equipped with standard keyways and setscrews, except as
noted. All pinions are left hand.
MOUNTING
DISTANCE
D
FACE
PITCH
DIA.
D
BORE
HUB
DIA.
MOUNTING
DISTANCE
HUB
PROJ.
PITCH
DIA.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 71
Lubrication — 152
Materials — 153
Selection Procedure — 67
Ratio
No. of
Teeth
Pitch
Dia.
STANDARD TOLERANCES
DIMENSION
BORE
±.0005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Face
Bore
MD
*
D
Dia.
Hub
Proj.
30
DIAMETRAL PITCH
26
.87
13
.43
2:1
26
.87
13
.43
All
TOLERANCE
.14
.14
Catalog
Number
Item
Code
Catalog
Number
Item
Code
.250
.1875
.375
.1875
.688
.750
.688
.750
.480
.453
.480
.453
.75
.38
.75
.38
.38
.30
.38
.30
STEEL
UNHARDENED
SS302-G
11938
SS302-P
11940
—
—
—
—
STEEL
HARDENED
—
—
—
—
SH302-G
11914
SH302-P†
11916
.500
.3125
.625
.3125
1.000
1.062
1.000
1.062
.730
.623
.730
.623
1.12
.62
1.12
.62
.42
.33
.42
.33
SS192-G
SS192-P
—
—
11934
11936
—
—
—
—
SH192-G
SH192-P†
—
—
11910
11912
.625
.4375
.750
.4375
.750
.500
.875
.500
1.188
1.250
1.188
1.250
1.375
1.625
1.375
1.625
.760
.625
.760
.625
.855
.848
.855
.848
1.38
.81
1.38
.81
1.62
1.00
1.62
1.00
.50
.30
.50
.30
.56
.45
.56
.45
SS142-G
SS142-P
—
—
SS142-1G
SS142-1P
—
—
11926
11928
—
—
11930
11932
—
—
—
—
SH142-G
SH142-P
—
—
SH142-1G
SH142-1P
—
—
11902
11904
—
—
11906
11908
1.000
.625
1.1875
.625
1.875
2.375
1.875
2.375
1.135
1.219
1.135
1.219
2.00
1.50
2.00
1.50
.75
.63
.75
.63
SS102-G
SS102-P
—
—
11922
11924
—
—
—
—
SH102-G
SH102-P
—
—
11898
11900
1.250
.750
1.500
.750
2.500
3.125
2.500
3.125
1.575
1.677
1.575
1.677
2.88
1.88
2.88
1.88
1.06
.94
1.06
.94
SS82-G
SS82-P
—
—
11918
11920
—
—
—
—
SH82-G
SH82-P
—
—
11894
11896
19
DIAMETRAL PITCH
26
1.37
13
.68
2:1
26
1.37
13
.68
.25
.25
14
DIAMETRAL PITCH
26
1.86
13
.93
26
1.86
13
.93
2:1
32
2.29
16
1.14
32
2.29
16
1.14
.31
.31
.38
.38
10
DIAMETRAL PITCH
34
3.40
17
1.70
2:1
34
3.40
17
1.70
.57
.57
8
DIAMETRAL PITCH
34
4.250
17
2.125
2:1
34
4.250
17
2.125
.71
.71
*Mounting Distance (MD) must not be made less than dimension shown, see Page 147.
†No keyway or setscrew.
66
Gear Catalog
MITER AND BEVEL GEARS
Boston stock miter and bevel gears are designed for transmission of power
and/or motion between intersecting shafts at a right angle (90°). Miter gears are
a special type of bevel gear designed to operate as pairs being identical in number of teeth and pitch (1 to 1 ratio only). Other Boston stock bevel gear sets are
available with ratios from 1-1/2:1 to 6:1.
All Boston standard stock bevels and miters are manufactured with a 20° pressure angle. These bevel gears are made in accordance with AGMA specifications for a long and short addendum system for gears and pinions, which serves
to reduce the amount of pinion tooth undercut and to nearly equalize the strength
and durability of the gear and pinion. Boston straight tooth bevel and miter gears
have generated teeth with “Coniflex”® tooth form, unless otherwise specified.
INTERCHANGE
Stock miter and bevel gears having identical diametral pitch, number of teeth
and mounting distance (and spiral angle for spiral bevels) are interchangeable.
SPIRAL VS. STRAIGHT TOOTH
Boston standard stock straight bevel gears can be used for all applications
requiring transmission of power and motion between intersecting shafts. Boston
standard stock spiral bevel gears have an overlapping tooth action which results
in a smoother gear action, lower noise, and higher load capacity than a straight
bevel of equal size.
®Trademark of the Gleason Works.
SELECTION PROCEDURE
Approximate horsepower ratings for selected sizes (number of
teeth) at various operating speeds (RPM) are given for Boston
standard stock Bevel and Miter gears.
For straight tooth Miter gears, refer to Pages 68, 69.
For straight tooth Bevel gears, refer to Page 70.
For spiral tooth Miter gears, refer to Page 71.
For spiral tooth Bevel gears, refer to Page 71.
1. Determine service factor.
a. Using Application Classification Chart I, pages 155–156
determine service factor or
b. With knowledge of operating conditions and load classification, select service factor from Table 1.
2. Determine Design Horsepower.
Design HP = Application Load x Service Factor (Table 1)
All ratings are based on normal operating conditions, that is:
properly mounted and lubricated, carrying a smooth load for
not more than 10 hours (Service Factor = 1.0). Refer to Table 1
for service factors in other service conditions.
3. Select a gear set with horsepower capacity equal to (or
greater than) design horsepower determined in Step 2.
TABLE 1
Service
Factor
.8
1.0
1.25
1.50
1.75
2.0
Operating Conditions
Uniform — not more than 15 minutes in 2 hours.
Moderate Shock — not more than 15 minutes in 2 hours.
Uniform — not more than 10 hours per day.
Moderate Shock — not more than 10 hours per day.
Uniform — more than 10 hours per day.
Heavy Shock — not more than 15 minutes in 2 hours.
Moderate Shock — more than 10 hours per day.
Heavy Shock — not more than 10 hours per day.
Heavy Shock — more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require
the use of higher service factors. Consultation with factory is
recommended in these applications.
Gear Catalog
67
MITER GEARS
STEEL & IRON — STRAIGHT TOOTH
1:1 RATIO
L-Series–Unhardened Steel
HLK Series–Hardened Steel (Teeth only)
OA Series–Cast Iron
APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0)
Catalog
Number Pitch
50 RPM
100 RPM
200 RPM
300 RPM
600 RPM
900 RPM
1200 RPM 1800 RPM
HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque
L110Y
L111Y
L101Y
L125Y
L126Y
HLK110Y
L112Y
L102Y
L127Y
L119Y
L120Y
L121Y
L133Y
HLK101Y
L113Y
HLK102Y
L103Y
L128Y
L129Y
L114Y
HLK121Y
L130Y
L104Y
L131Y
HLK103Y
HLK129Y
OA828Y-1
L105Y-A
L115Y
L116Y
HLK114Y
OA832Y-1
HLK104Y
HLK130Y
HLK131Y
16
.02
.03
25.2
37.8
.03
.05
18.9
31.5
.06
.10
18.9
31.5
.09
.13
18.9
27.3
.15
.24
15.8
25.2
.21
.32
14.7
22.4
.26
.38
13.7
20.0
.33
.48
11.6
16.8
12
.03
37.8
.06
37.8
.12
37.8
.17
35.7
.29
30.5
.40
28.0
.47
24.7
.59
20.7
16
.04
50.4
.06
.07
37.8
44.1
.12
.14
37.8
44.1
.18
.20
37.8
42.0
.30
.30
31.5
31.5
.42
.44
29.4
30.8
.52
.52
27.3
27.3
.66
.64
23.1
22.4
12
.05
63.0
.09
56.7
.18
56.7
.25
52.5
.42
44.1
.56
39.2
.66
34.7
.81
28.4
12
.07
88.2
.14
88.2
.25
78.7
.35
73.5
.60
63.0
.77
53.9
.90
47.3 1.1
38.5
12
.06 75.6
.09 113
.10 126
.12 75.6
.17 107
.18 113
.24 75.6
.33 104
.36 113
.34 71.4
.45 94.5
.50 105
.58
.75
.84
60.9
78.8
88.2
.96
.96
1.1
67.2 1.1
67.2 1.1
77.0 1.3
57.8 1.3
57.8 1.3
68.3 1.6
45.5
45.5
56.0
10
.11 139
.20 126
.37 117
.52 109
.87
91.4
1.1
77.0 1.3
68.3 1.5
52.5
12
.15 189
.14 176
.29 183
.28 176
.52 164
.50 157
.71 149
.70 147
1.1
1.2
116
126
1.4
1.5
98.0 1.6
105
1.8
84.0 1.9
94.5 2.2
66.5
77.0
10
.18 227
.33 208
.61 192
.83 174
1.3
137
1.6
112
1.7
89.3 2.2
77.0
10
.20 252
.40 252
.74 233
1.0
210
1.7
179
2.2
154
2.6
137
3.1
8
.28 353
.53 334
.93 293
1.2
252
1.9
200
2.3
161
—
—
—
8
.30 378
.56 353
1.0
315
1.4
294
2.1
221
2.6
182
3.0
158
3.4
119
12
8
.29 366
.37 466
.58 365
.68 428
1.0
1.2
315
378
1.4
1.6
294
336
2.3
2.4
242
252
2.8
2.8
196
196
3.2
—
168
—
3.9
—
137
—
10
.33 416
.66 416
1.2
378
1.7
357
2.6
273
3.3
231
3.8
200
4.5
158
109
—
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. Use for interpolation purposes only.
*Torque Rating (Lb. Ins.)
68
Gear Catalog
MITER GEARS
STEEL & IRON — STRAIGHT TOOTH
1:1 RATIO
L-Series–Unhardened Steel
HLK Series–Hardened Steel (Teeth only)
OA Series–Cast Iron
APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0)
Catalog
Number
L106Y
L117Y
L132Y
OA624Y
L123Y
HLK105YA
HLK115Y
HLK116Y
L107Y
L118Y
OA630Y-1
OA525Y
L134Y
L135Y
HLK106Y
HLK117Y
HLK132Y
OA636Y-1
HLK123Y
L108Y
L122Y
L136Y
HLK107Y
HLK118Y
OA424Y
OA540Y-1
L109Y
L137Y
L138Y
HLK108Y
HLK122Y
HLK109Y
50 RPM
100 RPM
200 RPM
300 RPM
600 RPM
900 RPM 1200 RPM
1800 RPM
Pitch HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque HP Torque
8
.42
529
.79
498
1.4
441
1.9
399
2.8
294
3.4
238
3.8
200
—
—
6
8
.46
.55
580
693
.87
1.0
548
630
1.5
1.8
472
567
2.0
2.4
420
504
3.0
3.5
315
368
3.5
4.2
245
294
—
4.6
—
242
—
—
—
—
8
.55
693
1.1
693
2.0
630
2.7
567
4.3
452
5.3
371
5.9
310
6.9
242
6
.69
870
1.3
819
2.2
693
3.0
630
4.5
473
5.3
371
5.8
305
—
—
6
5
.82 1034
.90 1134
1.5
1.6
945
1008
2.5
2.7
787
850
3.2
3.5
672
735
4.7
5.1
494
536
—
—
—
—
—
—
—
—
—
—
—
—
6
.90 1134
1.6
1008
2.8
882
3.7
777
5.4
567
6.4
448
7.0
368
—
—
8
.80 1008
1.6
1108
2.8
882
3.7
777
5.7
599
6.8
476
7.6
399
—
—
6
8
1.1
1.0
1387
1260
1.9
2.0
1197
1260
3.2
3.6
1008
1134
4.1
4.7
861
987
5.8
7.0
609
735
—
8.4
—
588
—
9.2
—
483
—
—
—
—
5
1.3
1639
2.4
1512
4.1
1291
5.3
1113
7.6
798
9.0
630
—
—
—
—
6
1.3
1639
2.6
1638
4.5
1417
6.0
1260
8.0
840
11.0
770
12.0
630
—
—
4
5
1.6
2.0
2017
2521
2.8
3.5
1764
2205
4.6
5.6
1449
1764
5.9
7.0
1239
1470
8.2
—
861
—
—
—
—
—
—
—
—
—
—
—
—
—
4
2.3
2899
4.2
2646
7.0
2205
8.7
1827
12.4 1302
14.3 1001
—
—
—
—
4
3.0
3781
5.3
3339
8.6
2709
10.8
2268
14.6 1533
16.6 1162
—
—
—
—
5
2.4
3026
4.9
3087
8.2
2583
10.0
2100
15.0 1575
18.0 1260
—
—
—
—
4
4.2
5294
8.3
5529 14.0
4410
17.0
3510
25.0 2625
28.0 1960
—
—
—
—
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute. Use for interpolation purposes only.
*Torque Rating (Lb. Ins.)
Gear Catalog
69
BEVEL GEARS
STEEL & IRON — STRAIGHT TOOTH
L-Series/PA Series Pinions–Unhardened Steel
PA Series–Cast Iron
HL Series–Hardened Steel (Teeth Only)
APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0)
Catalog
†50 RPM
100 RPM
Number Pitch Ratio HP Torque HP Torque
L146Y
HL146Y
L151Y
HL151Y
L153Y
HL153Y
L148Y
HL148Y
L149Y
L150Y
HL150Y
HL149Y
PA3212Y
PA4212Y
L152Y
PA5210Y
HL152Y
L155Y
PA528Y
L156Y
HL155Y
PA626Y
PA625Y
PA726Y
L158Y
PA826Y
HL156Y
PA824Y
HL158Y
PA3316Y
PA45312Y
PA6310Y
PA638Y
L157Y
PA7536Y
PA935Y
PA4416Y
PA6412Y
PA6410Y
PA848Y
PA948Y
PA6616Y
PA6612Y
16
.03 37.9
16
.04 52.6
12 1-1/2:1 .10 128
12
.14 178
10
.24 296
10
.33 412
16
.02 20.4
16
.02 28.3
16 2:1 .04 55.8
14
.05 60.6
14
.07 84.2
16
.06 77.5
12
.04 50.4
12
.08 101
12 2:1 .14 174
10
.15 189
12
.19 242
10
.30 384
8
.20 252
8
.54 686
10 2:1 .42 533
6
.40 504
5
.43 542
6
.48 605
6
1.07 1350
6
.63 794
8 2:1 .76 952
4
.98 1235
6
1.49 1875
16
.05 68.7
12
.16 203
10
.34 431
8 3:1 .43 538
10
.34 431
6
.88 1103
5
1.53 1925
16
.06 79.7
12
.17 209
10 4:1 .22 276
8
.43 546
8
.75 943
16 6:1 .09 112
12
.12 147
.06
.08
.20
.27
.45
.63
.03
.04
.09
.09
.13
.12
.09
.16
.27
.28
.37
.58
.38
1.03
.81
.75
.82
.89
2.02
1.20
1.44
1.80
2.80
.11
.31
.66
.82
.66
1.66
2.88
.12
.32
.42
.83
1.43
.17
.23
37.1
51.5
124
173
285
395
20.1
27.9
54.6
59.3
82.4
75.9
56.7
101
169
176
234
369
239
652
512
472
517
561
1272
756
905
1134
1766
67.2
197
414
516
414
1049
1813
78.0
203
268
524
901
109
144
200 RPM
HP Torque
.11
.16
.37
.52
.84
1.16
.06
.09
.17
.18
.25
.23
.16
.29
.50
.51
.70
1.08
.70
1.88
1.50
1.30
1.50
1.60
3.62
2.00
2.62
3.20
5.02
.20
.59
1.21
1.52
1.21
3.03
5.16
.24
.61
.80
1.54
2.62
.33
.44
35.6
49.4
117
163
263
366
19.5
27.0
52.4
57.0
79.1
72.8
50.4
91.3
159
161
221
341
220
594
474
409
472
504
1140
630
824
1008
1583
64.5
186
383
478
383
955
1625
74.9
191
252
485
827
105
138
300 RPM
HP Torque
.16
.23
.53
.73
1.17
1.62
.09
.12
.24
.26
.36
.33
.23
.41
.72
.70
.99
1.51
.96
2.59
2.10
1.80
2.00
2.10
4.92
2.70
3.60
4.20
6.83
.30
.84
1.70
2.12
1.70
4.17
7.01
.34
.86
1.13
2.15
3.64
.48
.63
34.2
47.5
111
154
245
341
18.9
26.2
50.4
54.8
76.1
70.0
48.3
86.1
150
147
209
318
202
545
441
378
420
441
1033
567
757
882
1434
62.0
176
356
445
356
876
1472
72.0
181
238
452
764
101
133
600 RPM
HP Torque
.29
.41
.91
1.26
1.93
2.68
.17
.23
.43
.47
.65
.60
.40
.68
1.23
1.10
1.71
2.50
1.50
4.16
3.48
2.90
3.10
3.90
7.67
4.00
5.78
7.30
10.65
.53
1.44
2.81
3.51
2.81
6.69
10.93
.61
1.48
1.95
3.56
5.92
.86
1.13
30.7
42.6
95.1
132
203
282
17.3
24.1
45.2
49.1
68.2
62.7
42.0
71.4
129
115
179
263
157
437
365
304
325
409
806
420
607
1766
1119
55.6
151
295
368
295
703
1149
64.5
155
205
374
622
90.3
119
900 RPM
HP Torque
.40
.55
1.19
1.65
2.47
3.44
.23
.32
.58
.64
.88
.81
.52
.87
1.62
1.40
2.24
3.20
1.90
5.21
4.45
3.50
3.80
—
9.43
4.80
7.24
7.50
13.10
.72
1.89
3.60
4.49
3.60
8.38
13.44
.83
1.94
2.56
4.56
7.50
1.17
1.54
27.8
38.6
83.4
116
173
241
16.0
22.3
40.9
44.5
61.8
56.8
36.4
60.9
113
98.0
157
224
133
365
312
245
266
—
660
336.
507
525
917
50.4
132
252
314
252
587
942
58.5
136
179
319
525
81.9
108
1200 RPM
HP Torque
.48
.67
1.41
1.96
2.88
4.00
.28
.39
.71
.77
1.07
.99
.62
1.00
1.92
1.60
2.66
3.73
2.20
5.96
5.18
4.00
4.30
—
10.65
—
8.28
—
14.79
.88
2.24
4.18
5.22
4.18
9.59
15.19
1.02
2.31
3.04
5.30
8.65
1.42
1.88
1800 RPM
HP Torque
25.4
.62
35.3
.86
74.2 1.74
103
2.41
151
3.44
210
4.77
14.9
.37
20.7
.52
37.4
.91
40.6
.99
56.5 1.38
52.0 1.27
32.55 .76
52.50 1.20
101
2.36
84.00 —
140
3.27
196
4.45
115.50 —
313
6.97
272
6.18
210
—
225.75 —
—
—
559
12.24
—
—
435
9.68
—
—
777
17.00
46.1 1.12
118
2.75
220
5.00
274
6.24
220
5.00
504
11.21
798
17.45
53.4 1.30
121
2.83
160
3.74
278
6.33
454
10.21
74.8 1.82
98.6 2.40
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
*Torque Rating (Lb. Ins.)
†RPM of Pinion
70
Gear Catalog
21.7
30.1
60.8
84.5
120
167
13.1
18.1
31.9
34.7
48.2
44.3
26.6
42.0
82.5
—
115
156
—
244
217
—
—
—
429
—
339
—
595
39.3
96.5
175
218
175
393
611
45.6
99.2
131
222
357
63.9
84.2
STEEL SPIRAL MITER & BEVEL GEARS
STEEL SPIRAL MITER GEARS
1:1 RATIO
LSA-Series–Unhardened Steel
HLSK Series–Hardened Steel (Teeth Only)
APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0)
Catalog
Number
Pitch
LSA110Y
LSA101Y
LSA102Y
HLSK110Y
HLSK101Y
LSA103Y
HLSK102Y
LSA104Y
LSA105YA
HLSK103Y
LSA106Y
LSA107Y
LSA118Y
HLSK104Y
HLSK105YA
LSA122Y
HLSK106Y
HLSK107Y
HLSK118Y
HLSK122Y
18
12
12
18
12
10
12
10
7
10
8
6
6
10
7
5
8
6
6
5
50 RPM
HP Torque
100 RPM
HP Torque
.01
.02
.03
.03
.06
.07
.10
.15
.22
.23
.34
.02
.04
.07
.07
.13
.15
.21
.30
.44
.46
.69
.46
12.6
25.2
37.8
37.8
75.6
88.2
126.
189.
277.
290.
429.
580.
.90
.45 567.
.67 845.
.83 1046.
1.0 1260.
1.3 1639.
.90
1.3
1.6
2.0
2.4
3025.
200 RPM
HP Torque
12.6 .04
25.2 .08
44.1 .13
44.1 .14
81.9 .26
94.5 .30
132.
.41
189.
.57
277.
.84
290.
.89
435. 1.3
567. 1.7
12.6
25.2
40.9
44.1
81.9
94.5
129.
180.
265.
280.
409.
535.
300 RPM
600 RPM
900 RPM
HP Torque HP Torque HP Torque
1200 RPM
HP Torque
1800 RPM
HP Torque
.07
.13
.20
.21
.39
.44
.61
.83
1.2
1.3
1.8
14.7
27.3
42.0
44.1
81.9
92.4
128
174
252
273
378
.14
.25
.38
.42
.75
.80
1.0
1.5
2.2
2.4
3.3
14.7
26.2
39.9
44.1
78.7
84.0
105
151
231
252
346
.20
.35
.54
.59
1.0
1.1
1.6
2.0
3.0
3.4
4.5
14.0
24.5
37.8
41.3
70.0
77.0
112
140
210
238
315
.25
.45
.63
.76
1.3
1.4
2.0
2.6
3.8
4.3
5.7
13.1
23.6
33.1
39.9
68.2
73.5
105
136
199
226
299
.35
.62
.95
1.0
1.8
2.0
2.8
3.6
5.1
5.9
7.8
12.2
21.7
33.2
35.0
63.0
70.6
98.0
126
178
206
273
2.4
504
4.3
451
5.9
413
7.4
388
10.0
350
2.5
3.6
4.3
5.6
525
756
903
1176
4.5
6.5
7.5
10.0
472
682
787
1050
6.1
9.0
10.0
13.0
427
630
700
910
7.9
11.0
12.0
17.0
415
577
630
892
11.1
15.0
17.0
23.0
388
525
595
805
5.1
535.
787.
945.
1228.
1606.
7.3
1533
13.0
1365
17.0
1190
22.0
1155
33.0
1155
9.1
2866.
13.1
2751
23.1
2425
30.0
2100
38.0
1995
51.0
1785
1.7
2.5
3.0
3.9
2.7
567.
819.
1008.
1260.
1701.
4.9
3087.
STEEL SPIRAL BEVEL GEARS**
2:1 RATIO
SS-Series–Unhardened Steel
SH Series–Hardened Steel (Teeth Only)
APPROXIMATE HP & TORQUE* RATINGS FOR CLASS I SERVICE (Service Factor = 1.0)
Catalog
Number
SS302
SH302
SS192
SS142
SH192
SS142-1
SH142
SH142-1
SS102
SS82
SH102
SH82
Pitch
30
30
19
14
19
14
14
14
10
8
10
8
50 RPM†
HP Torque
.002
.005
.01
.02
.03
.04
.06
.10
.14
.26
.34
.64
100 RPM†
HP Torque
2.5
.004
6.3
.01
12.6
.02
25.2
.05
37.8
.05
50.4
.08
75.6
.12
126
.20
176
.27
328
.50
429
.67
807
1.3
200 RPM†
HP Torque
2.5 .008
6.3 .02
12.6 .04
31.5 .09
31.5 .10
50.4 .16
75.6 .23
126
.39
170
.52
315
.99
422
1.3
819
2.5
2.5
6.3
12.6
28.3
31.5
50.4
72.4
123
164
312
409
787
300 RPM†
HP Torque
.013
.03
.06
.14
.16
.23
.34
.58
.78
1.5
2.0
3.7
2.7
6.3
12.6
29.4
33.6
48.3
71.4
122
164
315
420
777
600 RPM†
HP Torque
.025
.06
.12
.26
.31
.45
.66
1.1
1.5
2.8
3.8
7.1
900 RPM†
1200 RPM†
1800 RPM†
HP Torque HP Torque HP Torque
2.6
.037
6.3
.09
12.6
.18
27.3
.39
32.5
.46
47.2
.67
69.3
.98
115
1.7
151
2.2
294
4.2
399
5.6
745 10.5
2.6
.05
6.3
.12
12.6
.24
27.3
.51
32.2
.60
46.9
.88
68.6 1.3
119
2.2
154
2.9
294
5.5
392
7.3
735 13.7
2.6
.07
6.3
.18
12.6
.35
26.8
.76
31.5
.88
46.2 1.3
68.2 1.9
115
3.2
152
4.3
289
8.0
383
10.7
719
20.0
2.4
6.3
12.2
26.6
30.8
45.5
66.5
112
150
280
374
700
Ratings are based on strength calculation. Basic Static Strength Rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
*Torque Rating (Lb. Ins.)
**Ratings reflect Gear and Pinion sets.
†Pinion RPM
Gear Catalog
71
NOTES
72
Gear Catalog
WORMS AND WORM GEARS
SECTION CONTENTS
CATALOG NUMBERS / DIMENSIONS............................................................................................. 74 – 83
SELECTION PROCEDURE ....................................................................................................................... 84
HORSEPOWER & TORQUE RATINGS............................................................................................ 85 – 86
CENTER DISTANCES & RATIOS AVAILABLE ....................................................................................... 86
STOCK ALTERED / CUSTOM WORM AND WORM GEARS.......................................................... 87 – 89
WORM/WORM GEAR ENGINEERING INFORMATION .............................................................. 149 – 150
Gear Catalog
73
WORMS AND WORM GEARS
48 DIAMETRAL PITCH
PRESSURE ANGLE – SINGLE THREAD 141/2°
BRONZE WORM GEARS – STEEL WORMS – Unhardened and Hardened DOUBLE THREAD 20°
QUAD THREAD 25°
ACETAL WORM GEARS AND WORMS
RATIO = Gear Teeth ÷ Worm Threads
All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
48
DIAMETRAL PITCH
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
HUB
PROJ.
FACE
HUB
DIA.
BORE
*
PITCH
DIA.
20
30
40
50
.417
.625
.188
.833
1.042
.34
.44
20
.417 .125
.125
.625
.188
.188
.833
.250
.188
1.042
.250
.34
.19
.44
.25
.50
.25
.50
.25
.417
.34
.625
.44
.833 .1875 .50
1.042
.50
1.250
.62
1.667
.62
.250
2.083
.69
.19
30
40
50
STANDARD TOLERANCES
DIMENSION
Bronze
and Steel
BORE
Acetal
Acetal with
Brass Insert
TOLERANCE
All
±.0005
All
+.000 –.002
All
+.001 –.000
20
30
40
50
60
80
100
FACE = .156"
*CENTER LINE WORM TO
FLUSH END = .078"
WORM
GEARS
.50
.19
.25
SINGLE Thread
DOUBLE Thread
Catalog
Item Catalog Item
Number
Code Number Code
ACETAL
QUAD Thread
Catalog
Item
Number
Code
GP1018
54106
–
GP1019
54107
–
GP1020
54108
–
GP1021
54109
–
ACETAL WITH BRASS INSERTS**
–
–
–
–
–
–
–
–
–
–
–
–
GP1018-1/8
54118
GP1019-1/8
54119
GP1019-3/16 54120
GP1020-3/16 54121
GP1020-1/4
54122
GP1021-3/16 54123
GP1021-1/4
54124
BRONZE
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
D1118
D1119
D1120
D1121
D1124
D1122
D1123
13488
13490
13492
13494
13500
13496
13498
Q1318
Q1319
Q1320
Q1321
Q1324
Q1322
Q1323
13440
13442
13444
13446
13452
13448
13450
.25
.31
B
B
A
B
G1018
G1019
G1020
G1021
G1024
G1022
G1023
13564
13566
13568
13570
13572
13574
13576
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
SINGLE
.0654"
DOUBLE
.1309"
QUAD
.2618"
3°35´
7°7´
14°2´
FACE
PITCH
DIA.
HUB
DIA.
BORE
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
Hub
SINGLE Thread
Catalog
Item
Number
Code
ACETAL
DOUBLE Thread
Catalog
Item
Number
Code
QUAD Thread
Catalog
Item
Number
Code
Pitch
Dia.
Face
Bore
Dia.
Proj.
.333
.562
.1875
.26
.19
LSHP
54141
–
UNHARDENED – STEEL
.333
.562
.1875
.26
.19
LSH-1
12920
DSH-1
HARDENED – STEEL
12928
QSH-1
12934
.333
.562
.1875
.26
.19
HLSH-1
GLSH-1
13052
13036
HQSH-1
GQSH-1
13062
13042
13026
12952
HDSH-1
GDSH-1
–
–
–
All Steel worms have .0625 drilled hole in hub.
Hxxx worms have polished threads.
Gxxx worms have ground and polished threads.
**These are in effect Helical Gears with a Helix Angle compatible with the worms. When in mesh they
operate as a worm pair at right angles.
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
74
HUB
PROJ.
48
Gear Catalog
WORMS AND WORM GEARS
32 DIAMETRAL PITCH
PRESSURE ANGLE – SINGLE THREAD 141/2°
BRONZE WORM GEARS – STEEL WORMS – Unhardened and Hardened DOUBLE THREAD 20°
QUAD THREAD 25°
ACETAL WORM GEARS AND WORMS
RATIO = Gear Teeth ÷ Worm Threads
All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
32
DIAMETRAL PITCH
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
HUB
PROJ.
FACE
HUB
DIA.
BORE
*
PITCH
DIA.
20
30
40
50
20
30
40
50
.625
.188
.938
1.250
.250
1.562
.188
.250
.188
.938
.250
.250
1.250
.313
.250
1.562
.3125
.625
.50
.63
.63
.63
.25
TOLERANCE
All
±.0005
All
+.000 –.002
All
+.001 –.000
20
30
40
50
60
80
96
100
.31
.50
.25
.63
.25
.63
.31
GP1026
54110
–
GP1027
54111
–
GP1028
54112
–
GP1029
54113
–
ACETAL WITH BRASS INSERTS
–
–
–
–
–
–
–
–
–
–
–
–
GP1026-3/16 54125
GP1026-1/4
54126
GP1027-3/16 54127
GP1027-1/4
54128
GP1028-1/4
54129
GP1028-5/16 54130
GP1029-1/4
54131
GP1029-5/16 54132
BRONZE
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
.63
.31
D1126
D1127
D1128
D1129
D1132
D1130
–
D1133
13502
13504
13506
13508
13514
13510
–
13516
Q1326
Q1327
Q1328
Q1329
Q1332
Q1330
Q1331
–
13454
13456
13458
13460
13466
13462
13464
–
B
.625
.50
.1875
.938
.62
1.250
.62
1.562 .250 .62
1.875
.69
2.500
3.000 .3125 .69
3.125
SINGLE Thread
DOUBLE Thread
QUAD Thread
Catalog
Item Catalog Item
Catalog
Item
Number
Code Number Code Number
Code
ACETAL
B
STANDARD TOLERANCES
DIMENSION
Bronze
and Steel
BORE
Acetal
Acetal with
Brass Insert
FACE = .219"
*CENTER LINE WORM TO
FLUSH END = .109"
WORM
GEARS
.25
A
.31
.31
D
G1026
G1027
G1028
G1029
G1032
G1030
G1031
G1033
13578
13580
13582
13584
13586
13588
13590
13592
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
SINGLE
.0982"
DOUBLE
.1963"
QUAD
.3927"
4°5´
8°8´
15°57´
FACE
PITCH
DIA.
BORE
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
HUB
PROJ.
HUB
DIA.
32
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
Hub
SINGLE Thread
Catalog
Item
Number
Code
ACETAL
DOUBLE Thread
Catalog
Item
Number
Code
QUAD Thread
Catalog
Item
Number
Code
Pitch
Dia.
Face
Bore
Dia.
Proj.
.438
.641
.1875
.32
.19
LTHBP
54142
–
UNHARDENED – STEEL
–
.438
.688
.1875
.32
.19
LTHB-1
12922
DTH-1
HARDENED – STEEL
12930
QTH-1
12936
.438
.688
.2187
.32
.19
HLTH-1
GLTH-1
13054
13038
HQTH-1
GQTH-1
13064
13044
13028
12954
HDTH-1
GDTH-1
–
–
All Steel worms have .0625 drilled hole in hub.
Hxxx worms have polished threads.
Gxxx worms have ground and polished threads.
Gear Catalog
75
WORMS AND WORM GEARS
24 DIAMETRAL PITCH
PRESSURE ANGLE – SINGLE THREAD 141/2°
BRONZE WORM GEARS – STEEL WORMS – Unhardened and Hardened DOUBLE THREAD 20°
QUAD THREAD 25°
MINLON® WORM GEARS – NYLON WORMS
RATIO = Gear Teeth ÷ Worm Threads
All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
24
DIAMETRAL PITCH
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
HUB
PROJ.
FACE
PITCH
DIA.
20
30
40
50
20
30
40
50
STANDARD TOLERANCES
DIMENSION
Bronze
and Steel
BORE Minlon/Nylon
Minlon/Nylon
w/Brass Insert
SINGLE Thread
DOUBLE Thread
QUAD Thread
Catalog
Item Catalog Item
Catalog
Item
Number
Code Number Code Number
Code
MINLON
HUB
DIA.
BORE
*
FACE = .250"
*CENTER LINE WORM TO
FLUSH END = .125"
WORM
GEARS
TOLERANCE
All
±.0005
All
+.000 –.002
All
+.001 –.000
20
30
40
50
60
72
80
96
100
.833
.1875 .63
1.250
1.667
.3125 .75
2.083
.1875
.250
.63
.1875
1.250
.250
.250
1.667
.3125
.75
.250
2.083
.3125
.31
GP1034
54114
–
GP1035
54115
–
B
GP1036
54116
–
GP1037
54117
–
MINLON WITH BRASS INSERTS*
–
–
–
–
–
–
–
–
–
–
–
–
GP1034-3/16 54133
GP1034-1/4
54134
GP1035-3/16 54135
GP1035-1/4
54136
GP1036-1/4
54137
GP1036-5/16 54138
GP1037-1/4
54139
GP1037-5/16 54140
BRONZE
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
D1134
D1135
D1136
D1137
D1140
D1138
D1141
D1139
D1149
13518
13520
13522
13524
13530
13526
13532
13528
13534
Q1334
Q1335
Q1336
Q1337
Q1340
Q1338
Q1341
–
–
13470
13472
13474
13476
13482
13478
13484
–
–
.833
.833
1.250
1.667
2.083
2.500
3.000
3.333
4.000
4.167
.31
.1875 .62
.31
.250
.62
.31
.75
.31
.88
.38
.88
.38
.3125
.375
B
A
B
C
D
G1034
G1035
G1036
G1037
G1040
G1038
G1041
G1039
G1049
13594
13596
13598
13600
13602
13604
13606
13608
13610
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
SINGLE
.1309"
DOUBLE
.2618"
QUAD
.5236"
4°46´
9°28´
18°26´
24
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
FACE
PITCH
DIA.
BORE
Pitch
Dia.
Face
Bore
Dia.
Proj.
HUB
DIA.
.500
.643
.188
.38
.25
.500
.812
.1875
.38
.25
.500
.812
.25
.38
.25
SINGLE Thread
Catalog
Item
Number
Code
NYLON
DOUBLE Thread
Catalog
Item
Number
Code
LUHBP
54143
–
UNHARDENED – STEEL
QUAD Thread
Catalog
Item
Number
Code
–
–
–
LUHB
12924
DUH
HARDENED – STEEL
12932
QUH
12938
HLUH
GLUH
13056
13040
HQUH
GQUH
13066
13060
13030
12956
HDUH
GDUH
All Steel worms have .0938 drilled hole in hub.
Hxxx worms have polished threads.
Gxxx worms have ground and polished threads.
MINLON® is a registered trademark of E.I. DuPont.
**These are in effect Helical Gears with a Helix Angle compatible with the worms. When in mesh they
operate as a worm pair at right angles.
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
76
Hub
HUB
PROJ.
Gear Catalog
WORMS AND WORM GEARS
16 DIAMETRAL PITCH
PRESSURE ANGLE – SINGLE THREAD 141/2°
DOUBLE THREAD 141/2°
BRONZE AND CAST IRON WORM GEARS
QUAD THREAD 20°
STEEL WORMS – UNHARDENED AND HARDENED
RATIO = Gear Teeth ÷ Worm Threads
All Worms and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
16
DIAMETRAL PITCH
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
HUB
PROJ.
FACE
BORE
*
SINGLE Thread
DOUBLE Thread
Catalog
Item Catalog Item
Number
Code Number Code
QUAD Thread
Catalog
Item
Number
Code
BRONZE
HUB
DIA.
PITCH
DIA.
STANDARD TOLERANCES
DIMENSION
BORE
All
FACE = .313"
*CENTER LINE WORM TO
FLUSH END = .156"
WORM
GEARS
20
30
40
50
60
80
100
1.250 .250
1.875
.3125
2.500
3.125
3.750
.375
5.000
6.250
20
30
40
50
60
80
100
1.250 .250
1.875
.3125
2.500
3.125
3.750
.375
5.000
6.250
.62
.31
.75
.38
.88
.44
1.00
.50
.62
.31
.75
.38
.88
.44
1.00
.50
A
B
C
D
A
B
C
G1042
13612
G1043
13614
G1044
13616
G1045
13618
G1048
13620
G1046
13622
G1047
13624
CAST IRON
CG1042
CG1043
CG1044
CG1045
CG1048
CG1046
CG1047
63506
63507
63508
63509
63510
63511
63512
D1142
D1143
D1144
D1145
D1148
–
–
13700
13702
13704
13706
13708
–
–
Q1342
Q1343
Q1344
Q1345
Q1348
Q1346
–
13536
13538
13540
13542
13544
13546
–
CD1142
CD1143
CD1144
CD1145
CD1148
–
–
63513
63514
63515
63516
63517
–
–
CQ1342
CQ1343
CQ1344
CQ1345
CQ1348
CQ1346
–
63518
63519
63520
63521
63522
63523
–
TOLERANCE
±.0005
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
SINGLE
.1963"
DOUBLE
.3927"
QUAD
.7854"
5°43´
11°19´
21°48´
16
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
FACE
PITCH
DIA.
BORE
Hub
HUB
PROJ.
Pitch
Dia.
Face
Bore
Dia.
Proj.
HUB
DIA.
.625
1.00
.250
.44
.25
.625
1.00
.3125
.44
.25
SINGLE Thread
DOUBLE Thread
Catalog
Item
Catalog
Item
Number
Code
Number
Code
UNHARDENED – STEEL
QUAD Thread
Catalog
Item
Number
Code
LVHB-1
12926
DVH-1
HARDENED – STEEL
12862
QVH-1
12940
HLVH-1
GLVH-1
13004
12950
HQVH-1
GQVH-1
13058
13046
13032
12958
HDVH-1
GDVH-1
All worms have .0938 drilled hole in hub.
Hxxx worms have polished threads.
Gxxx worms have ground and polished threads.
REFERENCE PAGES
Alterations — 152
Lubrication — 152
Materials — 153
Gear Catalog
77
WORMS AND WORM GEARS
12 DIAMETRAL PITCH
BRONZE AND CAST IRON WORM GEARS
STEEL WORMS – UNHARDENED AND HARDENED
PRESSURE ANGLE
– 141/2°
RATIO = Gear Teeth ÷ Worm Threads
RH = RIGHT HAND — LH = LEFT HAND
All others stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
12
FACE = .500"
*CENTER LINE WORM TO
FLUSH END = .250"
WORM
GEARS
DIAMETRAL PITCH
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
SINGLE Thread
Catalog
Item
Number
Code
DOUBLE Thread
Catalog
Item
Number
Code
QUAD Thread
Catalog
Item
Number
Code
–
–
DB1400
–
DB1401A
–
DB1402A
–
DB1403A
–
DB1260A
–
–
–
–
13714
–
13716
–
13718
–
13720
–
13722
–
–
QB1212†
QB1216†
DB1600
–
DB1601A
–
DB1602A
–
DB1603A
–
QB1260A
–
–
13762
13764
13766
–
13768
–
13770
–
13772
–
13774
–
–
13260
13262
D1600
13352
BRONZE
12
16
20
1.000 .5625 1.00
1.333 .6875 1.25
1.667 .500 1.25
.500
2.500
1.19
.750
.625
3.333
1.44
.750
.625
4.167
1.44
.750
.625
5.000
1.69
.750
6.667 .625 1.94
8.333 .750 1.94
.62
.62
.50
.62
.62
.62
.62
.62
.62
.75
.75
.75
.75
20
1.667 .500
.50
30
2.500
30
40
HUB
PROJ.
FACE
50
60
HUB
DIA.
BORE
*
PITCH
DIA.
80
100
1.25
.500
DIMENSION
BORE
All
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
.62
1.44
SINGLE
.2618"
DOUBLE
.5236"
QUAD
1.0472"
4°46´
9°28´
18°26´
.62
.625
50
4.167
B
.62
1.44
.750
.625
60
5.000
80
.750
.625
6.667
.750
8.333 .750
100
A
.62
.750
TOLERANCE
±.0005
C
.62
.625
3.333
STANDARD TOLERANCES
B
1.19
.750
40
A
.62
1.69
.75
1.94
.75
1.94
.75
C
–
–
–
–
GB1050A
13626
GB1051
13628
–
–
GB1052A
13630
–
–
GB1053A
13632
–
–
GB1260A
13634
–
–
GB1054
13636
GB1055
13638
CAST IRON
G1050ARH
G1050ALH
G1051RH
G1051LH
13110 D1400RH
13112 D1400LH
13114
–
13116
D1401ARH
–
–
D1401ALH
G1052ARH 13118
–
G1052ALH 13120
D1402ARH
–
–
D1402ALH
G1053ARH 13122
–
G1053ALH 13124
D1403ARH
–
–
D1403ALH
G1260RH
13126
–
G1260LH
13128
–
–
D1260A
G1054
13130
–
–
–
D1404
G1055
13134
–
12
–
–
–
13264
13266
D1601A
13354
–
–
–
13268
13270
D1602A
13356
–
–
–
13272
13274
D1603A
13358
–
–
–
13276
–
13278
–
Q1260A
–
–
–
13360
–
–
–
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
FACE
PITCH
DIA.
HUB
DIA.
BORE
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 85, 86
Lubrication — 152
Materials — 153
Selection Procedure — 84
78
HUB
PROJ.
Gear Catalog
Pitch
Dia.
Hub
Face
Bore
Dia.
Proj.
1.125
.625
–
–
1.000 1.625
.625
.500
–
–
–
–
1.125
.500
.75
.38
1.125
.625
–
–
1.000 1.625
.625
.500
–
–
–
–
1.125
.500
–
–
SINGLE Thread
DOUBLE Thread
Catalog
Item
Catalog
Item
Number
Code
Number
Code
UNHARDENED – STEEL
D1407KRH‡
D1407KLH‡
–
–
L1407‡
L1056‡
12900
–
GH1056RH 12884 DH1407RH
GH1056LH 12886 DH1407LH
HARDENED – STEEL
–
–
–
HL1056‡
H1056RH‡
H1056LH‡
†.750" Face, Center Line Worm to Flush End = .375"
‡Furnished with .125" Keyway.
Hardened Worms have ground and polished threads.
–
H1407RH‡
H1407LH‡
–
HL1407‡
13006
–
12962
–
12960
–
–
QUAD Thread
Catalog
Item
Number
Code
12806
12808
12912
–
12838
12840
D1607KRH‡ 12822
D1607KLH‡ 12824
–
–
–
–
DH1607
12854
–
–
12980
12982
13018
–
–
–
H1607‡
–
–
–
–
–
12996
–
–
–
–
–
WORMS AND WORM GEARS
10 DIAMETRAL PITCH
BRONZE AND CAST IRON WORM GEARS
STEEL WORMS – UNHARDENED AND HARDENED
– 141/2°
PRESSURE ANGLE
RATIO = Gear Teeth ÷ Worm Threads
RH = RIGHT HAND — LH = LEFT HAND
All others stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
10
DIAMETRAL PITCH
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
16
20
30
40
HUB
PROJ.
FACE
50
60
HUB
DIA.
BORE
*
PITCH
DIA.
80
100
1.600 .750
.500
2.000
.875
.625
3.000
.875
.625
4.000
.875
.750
5.000
.875
.750
6.000
.875
8.000 .750
10.000 .750
1.50
1.25
1.62
.75
1.69
.62
1.69
.62
1.94
.75
1.94
.75
1.94
2.00
.75
.75
C
.62
A
A
.62
B
.500 1.25
20
2.000
.875 1.62
3.000
.62
DIMENSION
BORE
All
TOLERANCE
±.0005
4.000
–
.62
B
.875 1.69
5.000
.75
.875 1.94
60
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
SINGLE
.3142"
DOUBLE
.6283"
QUAD
1.2566"
4°34´
9°5´
17°45´
80
100
6.000
.750 1.94
.875
.750
8.000
.875
.750
10.000
.875
1.94
1.94
1.94
1.94
1.94
–
G1063RH
G1063LH
.750 1.94
50
–
–
.75
.75
C
.75
G1064RH
G1064LH
–
G1067
–
G1065
–
–
10
–
13148
13150
–
DOUBLE Thread
Catalog
Item
Number
Code
QUAD Thread
Catalog
Item
Number
Code
–
–
DB1410
–
DB1411
–
DB1412
–
DB1413A
–
DB1414A
–
–
–
–
13728
–
13736
–
13730
–
13732
–
13734
–
–
QB1016†
–
DB1610
–
DB1611
–
DB1612
–
DB1613A
–
–
–
–
13780
–
13782
–
13788
–
13784
–
13786
–
–
–
–
–
–
–
–
D1410RH
D1410LH
13282
13284
–
–
D1411RH
D1411LH
G1062ARH 13144
G1062ALH 13146
.625 1.69
40
BRONZE
–
–
GB1060A
13640
–
–
GB1061A
13648
–
–
GB1062A
13642
–
–
GB1063
13644
–
–
GB1064
13646
–
–
GB1067
13650
GB1065
13652
CAST IRON
G1060ARH 13136
G1060ALH 13138
–
.875 1.69
STANDARD TOLERANCES
SINGLE Thread
Catalog
Item
Number
Code
G1061ARH 13142
G1061ALH 13140
.625 1.69
30
FACE = .625"
*CENTER LINE WORM TO
FLUSH END = .312"
WORM
GEARS
13286
13288
–
–
D1412RH
D1412LH
13290
13292
–
–
D1413ARH 13294
D1413ALH 13296
13152
–
13154
–
D1414A
13156
–
–
D1080A
13158
–
–
D1415A
D1610
–
D1611
–
D1612
13366
–
13368
–
13370
–
–
D1613A
13372
–
–
–
13298
–
13300
–
13302
D1614A
–
Q1080A
–
–
13374
–
13376
–
–
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
Pitch
Dia.
FACE
PITCH
DIA.
BORE
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 85, 86
Lubrication — 152
Materials — 153
Selection Procedure — 84
Hub
Face
Bore
Dia.
Proj.
1.375
.750
–
–
2.000
.750
.625
–
–
–
–
–
–
1.375
.625
HUB
PROJ.
HUB
DIA.
1.250
.97
.50
1.375
.750
–
–
1.250 2.000
.750
.625
–
–
–
–
1.375
.625
–
–
SINGLE Thread
DOUBLE Thread
Catalog
Item
Catalog
Item
Number
Code
Number
Code
UNHARDENED – STEEL
QUAD Thread
Catalog
Item
Number
Code
–
–
D1418KRH‡
–
–
D1418KLH‡
–
–
L1418‡
L1066‡
12902
–
G1066KRH‡ 12864
–
G1066KLH‡ 12866
GH1066RH 12888 DH1418RH
GH1066LH 12890 DH1418LH
HARDENED STEEL
12810
12812
12914
–
12842
12844
DH1618
–
12856
–
–
–
–
HL1066‡
H1066RH‡
H1066LH‡
12986
12984
13020
–
H1618‡
–
–
–
12998
–
–
–
–
H1418RH‡
–
H1418LH‡
–
HL1418‡
13008
–
12966
–
12964
–
–
D1618KRH‡ 12826
D1618KLH‡ 12828
–
–
–
–
–
–
–
–
†.875" Face, Center Line Worm to Flush End = .438"
‡Furnished with 3/16" Keyway.
Hardened Worms have ground and polished threads.
Gear Catalog
79
WORMS AND WORM GEARS
8 DIAMETRAL PITCH
BRONZE AND CAST IRON WORM GEARS
STEEL WORMS – UNHARDENED AND HARDENED
– 141/2°
PRESSURE ANGLE
RATIO = Gear Teeth ÷ Worm Threads
RH = RIGHT HAND — LH = LEFT HAND
All others stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
8
DIAMETRAL PITCH
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
8
12
16
20
30
HUB
PROJ.
FACE
HUB
DIA.
BORE
*
PITCH
DIA.
40
48
50
60
80
100
1.000 .500
1.500 .750
2.000 1.000
.750
2.500
1.000
.750
3.750
1.000
5.000 1.000
6.000 1.000
6.250 1.000
7.500 1.000
10.000 1.250
12.500 1.250
1.12 .88
1.50 .88
2.00 .88
1.75 .75
1.75 .75
1.69 .75
1.69 .75
2.19 .75
2.38 .88
2.31 .88
2.44 .88
2.75 .88
3.00 1.00
.750 1.75
20
A
B
C
D
C
.75
2.500
A
1.000 1.75
.750 1.69
30
–
.75
.75
40
5.000 1.000 1.69
.75
48
6.000 1.000 2.38
.88
50
6.250 1.000 2.31
.88
60
80
96
100
7.500 1.000
1.000
10.000
1.250
12.000 1.250
12.500 1.250
BRONZE
–
–
–
–
–
–
GB1070
13654
–
–
GB1071
13656
–
–
GB1072A
13658
GB1073
13660
GB850RH 13662
GB860
13664
GB1074A
13666
GB8100
13668
CAST IRON
G1070RH
13160
G1070LH
13162
–
G1071RH
G1071LH
B
STANDARD TOLERANCES
TOLERANCE
±.0005
SINGLE Thread
Catalog
Item
Number
Code
.75
3.750
1.000 1.69
DIMENSION
BORE
All
FACE = .750"
*CENTER LINE WORM TO
FLUSH END = .375"
WORM
GEARS
2.44 .88
2.69 .88
2.69 .88
3.00 1.00
2.69 1.00
C
D
D
C
C
13164
13166
–
–
G1072ARH
G1072ALH
G1073RH
G1073LH
G850RH
G850LH
G860
–
G1074ARH
G1075
G8100A
13168
13170
13174
13172
13176
13178
13180
–
13182
13186
13188
DOUBLE Thread
Catalog
Item
Number
Code
QUAD Thread
Catalog
Item
Number
Code
–
–
–
–
DB1420A
–
DB1421A
DB1422
–
DB1423A
DB860A
–
–
–
–
–
–
13740
–
13742
13744
–
13746
13748
–
–
QB808†
QB812†
QB816†
–
DB1620A
–
DB1621A
DB1622
–
DB1623A
–
–
–
13790
13792
13794
–
13796
–
13798
13800
–
13802
–
–
–
–
–
–
–
D1620A
13380
–
–
D1621A
13382
D1622A
13384
–
–
–
D1423A
13316
D1623A
13386
D860A
D1424A
–
–
–
13320
13322
–
–
–
Q860A
D1624A
–
–
–
13388
13390
–
–
–
D1420ARH 13304
D1420ALH 13306
–
D1421ARH
D1421ALH
D1422ARH
D1422ALH
–
–
13308
13310
13312
13314
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
SINGLE
.3927"
DOUBLE
.7854"
QUAD
1.5708"
4°46´
9°28´
18°26´
8
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
Pitch
Dia.
FACE
PITCH
DIA.
Face
Bore
Dia.
Proj.
1.750
.875
–
–
2.500
.875
.750
–
–
–
–
.750
–
–
.750
1.18
.62
1.750
.875
–
–
1.500 2.500
.875
.750
–
–
–
–
1.750
.750
–
–
HUB
PROJ.
HUB
DIA.
BORE
Hub
1.500
1.750
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 85, 86
Lubrication — 152
Materials — 153
Selection Procedure — 84
SINGLE Thread
DOUBLE Thread
Catalog
Item
Catalog
Item
Number
Code
Number
Code
UNHARDENED – STEEL
QUAD Thread
Catalog
Item
Number
Code
D1427KRH‡ 12814
D1427KLH‡ 12816
–
–
L1427‡
12916
L1076‡
12904
–
–
G1076KRH‡ 12868
–
–
G1076KLH‡ 12870
GH1076RH 12892 DH1427RH 12846
GH1076LH 12894 DH1427LH 12848
HARDENED STEEL
D1627KRH‡ 12830
D1627KLH‡ 12832
–
–
–
–
–
–
–
HL1076‡
H1076RH‡
H1076LH‡
†1.000" Face, Center Line Worm to Flush End = .500"
‡Furnished with .188" Keyway.
Hardened Worms have ground and polished threads.
80
Gear Catalog
–
H1427RH‡
H1427LH‡
–
HL1427‡
13010
–
12970
–
12968
–
12990
12988
13022
–
–
–
–
DH1627
12858
H1627‡
–
–
–
13000
–
–
–
–
–
WORMS AND WORM GEARS
6 DIAMETRAL PITCH
BRONZE AND CAST IRON WORM GEARS
STEEL WORMS – UNHARDENED AND HARDENED
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
6
Style
No.
Hub
See
of
Pitch
Page
Teeth Dia. Bore Dia. Proj. 153
20
24
30
36
40
HUB
PROJ.
FACE
HUB
DIA.
BORE
*
48
50
60
72
2.667 1.250
.750
3.333 1.000
1.250
.750
4.000
1.250
.875
5.000
1.250
6.000 1.000
1.000
6.667
1.250
8.000 1.250
8.333 1.250
10.000 1.250
12.000 1.250
PITCH
DIA.
2.38 1.00
2.00
2.00 .88
2.00
1.94
.88
2.19
.88
2.50
.88
2.44
.88
2.75
2.69
3.00
3.00
1.00
1.00
1.00
1.25
1.81
.88
A
B
C
.750
20
3.333
SINGLE Thread
Catalog
Item
Number
Code
BRONZE
–
–
GB1077A
13670
–
–
–
–
GB1080A
13672
–
–
GB1081
13674
–
–
GB1082
13676
GB1078
13678
–
–
GB1083
13680
GB1079
13682
GB1087
13684
GB1084
13686
CAST IRON
G1077RH
13190
G1077LH
13192
1.000
–
4.000
1.94
.88
1.250
DIMENSION
BORE
All
–
B
.875
STANDARD TOLERANCES
30
5.000
2.19
.88
–
36
6.000 1.000 2.50
40
6.667
.88
1.000
WORM LEAD and LEAD ANGLE
LEAD
LEAD
ANGLE
SINGLE
.5236"
DOUBLE
1.0472"
QUAD
2.0944"
4°46´
9°28´
18°26´
FACE
PITCH
DIA.
BORE
HUB
PROJ.
HUB
DIA.
2.44
.88
1.250
48
50
60
72
80
96
100
1.250
1.250
1.250
1.250
1.375
1.375
2.69
2.69
2.94
3.00
3.00
3.00
B
1.00
1.00
1.00
1.00
1.00
1.00
C
D
†1.250" Face, Center Line Worm to Flush End = .625"
‡Furnished with .188" Keyway.
†Furnished with .250" Keyway.
Hardened Worms have ground and polished threads.
–
–
13752
–
–
13754
–
13756
–
–
13758
–
–
–
–
QB616**
–
–
QB620A
–
DB1630A
–
DB1631A
–
–
DB1632A
–
–
–
–
13804
–
–
13806
–
13808
–
13810
–
–
13812
–
–
–
–
–
–
–
–
D620ARH
D620ALH
13326
13328
Q620A
13394
–
–
–
–
D1630A
13396
–
–
D1631A
13398
–
–
–
–
–
–
–
–
–
–
D1632A
13400
D1432ARH 13338
D1432ALH 13340
–
–
–
13342
13344
13346
–
–
–
D1633
Q660
D1634
–
–
–
13402
13404
13406
–
–
–
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
Hub
Face
Bore
Dia.
Proj.
2.500 1.000
–
–
1.000
.875
–
–
–
–
.875
–
–
.875
1.56
.75
2.500 1.000
–
–
2.000 3.500
1.000
.875
–
–
–
–
2.500
.875
–
–
REFERENCE PAGES
RATIO = Gear Teeth ÷ Worm Threads
RH = RIGHT HAND — LH = LEFT HAND
All others stocked RIGHT HAND ONLY.
–
–
–
DB620A
–
–
DB1430A
–
DB1431A
–
–
DB1432A
–
–
–
–
13212
–
13210
13214 D1433
13218 D660
13220 D1434
13224
–
13226
–
13228
–
6
Pitch
Dia.
Alterations — 152
Horsepower Ratings — 85, 86
Lubrication — 152
Materials — 153
Selection Procedure — 84
–
G1083RH
G1083LH
G1079
G1087ARH
G1084ARH
G1088A
G1085ARH
G1089ARH
QUAD Thread
Catalog
Item
Number
Code
D1431ARH 13334
D1431ALH 13336
13202
13204
13206
13208
–
8.000 1.250 2.75 1.00
8.333
10.000
12.000
13.333
16.000
16.667
13198
13200
G1082RH
G1082LH
G1078RH
G1078LH
DOUBLE Thread
Catalog
Item
Number
Code
D1430ARH 13330
D1430ALH 13332
–
G1081RH
G1081LH
1.250
TOLERANCE
±.0005
–
G1080ARH 13194
G1080ALH 13196
.750
24
FACE = 1.000"
*CENTER LINE WORM TO
FLUSH END = .500"
WORM
GEARS
DIAMETRAL PITCH
16
– 141/2°
PRESSURE ANGLE
3.500
2.000
2.500
SINGLE Thread
DOUBLE Thread
Catalog
Item
Catalog
Item
Number
Code
Number
Code
UNHARDENED – STEEL
QUAD Thread
Catalog
Item
Number
Code
D1438KRH† 12818
D1438KLH† 12820
–
–
L1438
12918
L1086‡
12906
–
–
G1086KRH‡ 12872
–
–
G1086KLH‡ 12874
GH1086RH 12896 DH1438RH 12850
GH1086LH 12898 DH1438LH 12852
HARDENED STEEL
D1638KRH† 12834
D1638KLH† 12836
–
–
–
–
–
–
–
HL1086‡
H1086RH‡
H1086LH‡
–
H1438RH‡
H1438LH‡
–
HL1438‡
13012
–
12974
–
12972
–
12994
12992
13024
–
Gear Catalog
–
–
–
DH1638
12860
H1638†
–
–
–
13002
–
–
–
–
–
81
WORMS AND WORM GEARS
4 DIAMETRAL PITCH
BRONZE AND CAST IRON WORM GEARS
STEEL WORMS – UNHARDENED AND HARDENED
PRESSURE ANGLE
– 141/2°
RATIO = Gear Teeth ÷ Worm Threads
RH = RIGHT HAND — LH = LEFT HAND
All others stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
HUB
PROJ.
FACE
*CENTER LINE WORM TO FLUSH END = .750"
WORM
DIAMETRAL PITCH
GEARS
Style
No.
Hub
See
SINGLE Thread
of
Pitch
Page
Catalog
Item
Teeth Dia. Bore Dia. Proj. 153
Number
Code
4
BORE
*
HUB
DIA.
PITCH
DIA.
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
±.0005
FACE = 1.500"
20
24
BRONZE
5.000
1.000 2.50 1.25
B
6.000
CAST IRON
20
5.000
1.000 2.50
24
6.000
32
8.000
1.25
40
48
64
B
1.250 3.00
10.000
12.000
1.500 3.50
16.000
D
GB1100
GB1101
13688
13690
G1100RH
G1100LH
G1101RH
G1101LH
G1102RH
G1102LH
G1103
G1104
G1105
13230
13232
13234
13236
13238
13240
13242
13244
13246
WORM LEAD and LEAD ANGLE
LEAD
LEAD ANGLE
.7854
4°46´
4
KEYWAY
PITCH
DIA.
Pitch
Dia.
BORE
3.000
SINGLE Thread
Catalog
Item
Bore Dia. Proj.
Number*
Code
UNHARDENED – STEEL
Hub
Face
G1106KRH
G1106KLH
4.500 1.250
–
–
L1106
HARDENED STEEL
3.500 1.250
3.500 1.250
3.000 4.500
1.250
5.750
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 85, 86
Lubrication — 152
Materials — 153
Selection Procedure — 84
82
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
FACE
Gear Catalog
–
–
–
–
–
–
H1106
HL1106
HP1106
*All worms furnished with .313 keyway.
Hardened Worms have ground and polished threads.
12876
12878
12908
12976
13014
13034
WORMS AND WORM GEARS
3 DIAMETRAL PITCH
CAST IRON WORM GEARS
STEEL WORMS – UNHARDENED AND HARDENED
PRESSURE ANGLE
– 141/2°
RATIO = Gear Teeth ÷ Worm Threads
All Worm and Worm Gears stocked RIGHT HAND ONLY.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
HUB
PROJ.
FACE
*CENTER LINE WORM TO FLUSH END = 1.000"
WORM
DIAMETRAL PITCH
GEARS
Style
No.
Hub
See
SINGLE Thread
of
Pitch
Page Catalog
Item
Teeth Dia. Bore Dia. Proj. 153
Number
Code
18
6.000 1.000 3.00 1.50
G1110
13248
24
8.000
G1111
13250
B
30 10.000
3.50
G1112
13252
36 12.000 1.500
1.50
G1113
13254
48 16.000
C
G1114
13256
4.00
54 18.000
G1115
13258
D
3
BORE
*
HUB
DIA.
PITCH
DIA.
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
±.0005
WORM LEAD and LEAD ANGLE
LEAD
LEAD ANGLE
1.0472"
4°46'
FACE = 2.000"
3
WORMS FOR ABOVE GEARS
DIAMETRAL PITCH
SINGLE Thread
Hub
Pitch
Catalog
Item
Dia. Face Bore Dia. Proj. Number
Code
UNHARDENED – STEEL
4.000
4.000
4.000
G1116KRH
1.500
–
–
5.500
L1116
HARDENED STEEL
12880
12910
4.000
1.500
5.500
12978
13016
–
–
H1116
HL1116
FACE
KEYWAY
PITCH
DIA.
BORE
*All worms furnished with .375" keyway.
Hardened Worms have ground and polished threads.
REFERENCE PAGES
Alterations — 152
Horsepower Ratings — 85, 86
Lubrication — 152
Materials — 153
Selection Procedure — 84
Gear Catalog
83
WORMS AND WORM GEARS
Boston worms and worm gears provide an effective answer for such power transmission applications as high-ratio speed reduction, limited space, right-angle shafts
and non-intersecting shafts. When properly applied, they are the smoothest and
quietest form of gearing. Steel worms and cast iron or bronze worm gears are available in single, double or quadruple threads, 48 to 3 diametral pitch.
Acetal worms and worm gears are available in single thread, 48 to 24
diametral pitch.
SELECTION PROCEDURE
Approximate input horsepower and output torque ratings for
Boston stock worm and worm gear combinations from 12 to
3 DP are listed on Pages 85, 86. These ratings are for hardened, ground and polished worms operating with bronze worm
gears. For other combinations multiply the listed ratings by the
following percentages:
Hardened, ground and polished steel worms with cast iron
gears 50%. Unhardened steel worms with cast iron gears 25%.
These ratings are listed at selected worm speeds. Ratings for
intermediate speeds can be interpolated from the values
indicated.
1. Determine service factor.
a. Using Application Classification Chart I, pages 155, 156,
determine service factor or
b. With knowledge of operating conditions and load classification, select service factor from Table 1.
2. Determine Design Horsepower.
Design HP = Application Load x Service Factor (Table 1)
3. Select worm gear set with horsepower capacity equal to [or
greater than] design horsepower determined in Step 2.
These ratings are based on gears operating with a Service
Factor of 1.0, properly mounted in accordance with good
design practice and continuously lubricated with a sufficient
supply of oil.
TABLE 1
Service
Factor
0.8
1.0
1.25
1.50
1.75
2.0
Operating Conditions
Uniform—not more than 15 minutes in 2 hours.
Moderate Shock—not more than 15 minutes in 2 hours.
Uniform—not more than 10 hours per day.
Moderate Shock—not more than 10 hours per day.
Uniform—more than 10 hours per day.
Heavy Shock—not more than 15 minutes in 2 hours.
Moderate Shock—more than 10 hours per day.
Heavy Shock—not more than 10 hours per day.
Heavy Shock—more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require the use of higher
service factors. Consultation with factory is recommended in these applications.
84
Gear Catalog
WORMS AND WORM GEARS
STEEL-HARDENED, GROUND AND POLISHED WORMS
BRONZE WORM GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
Worm RPM
Center
Ratio
Distance
3
1.000
1.500
1.167
1.425
4
1.750
2.333
1.333
1.625
5
2.000
2.667
6
3.000
1.750
2.125
7.5
2.625
3.500
1.333
1.625
2.000
2.167
10
2.667
2.625
3.250
4.333
12
3.000
2.583
12.5
3.125
3.875
1.750
2.125
15
2.625
3.000
3.500
18
5.000†
1.333
1.625
2.000
2.167
20
2.667
2.625
3.250
4.000
4.333
3.000
24
6.000†
4.500
2.583
3.125
25
3.875
5.167
1.750
2.125
2.625
3.000
30
3.500
3.625
4.500
7.000†
32
5.500
4.000
36
8.000†
Input
HP
.52
1.19
.78
1.11
1.77
3.01
.68
1.03
1.73
3.92
3.82
1.04
1.59
2.65
4.80
.44
.67
1.05
1.39
2.01
2.11
3.54
6.43
2.39
1.72
2.61
4.40
.64
.98
1.54
2.04
2.94
2.27
.28
.42
.65
.83
1.22
1.25
1.98
2.92
3.77
1.42
3.23
3.41
.99
1.50
2.39
2.27
.40
.59
.90
1.15
1.69
1.74
2.75
4.23
2.13
1.95
3.87
1800
Output
Torque
50
109
99
142
216
392
109
165
264
639
746
247
381
607
1174
130
196
318
441
616
672
1082
2094
882
683
1042
1681
284
436
699
966
1355
1308
140
217
343
483
665
742
1191
1667
2318
933
2218
2336
726
1112
1794
1738
294
452
725
1008
1386
1544
2489
3326
1955
1915
3990
Input
HP
.27
.66
.40
.61
.98
1.84
.34
.57
.96
2.40
2.34
.53
.87
1.47
2.94
.23
.38
.63
.71
1.26
1.16
1.96
3.94
1.50
.87
1.44
2.44
.33
.55
.92
1.03
1.84
1.38
.15
.25
.41
.43
.80
.71
1.18
1.99
2.36
.93
1.81
2.32
.52
.85
1.43
1.42
.21
.35
.57
.60
1.12
.98
1.65
2.53
1.46
1.29
1.33
600
Output
Torque
72
183
143
223
361
689
158
257
441
1124
1317
355
599
1016
2064
189
305
525
641
1071
1061
1806
3685
1537
985
1641
2810
410
678
1150
1402
2364
2373
210
336
567
693
1156
1156
1974
3025
4034
1613
4020
4235
1048
1730
2962
3028
410
693
1197
1450
2426
2395
4128
6002
3546
3366
4130
Input
HP
.06
.15
.08
.13
.22
.45
.07
.12
.22
.59
.57
.11
.19
.33
.72
.05
.09
.15
.15
.32
.25
.44
.96
.38
.18
.31
.55
.07
.13
.22
.22
.47
.41
.04
.06
.10
.09
.22
.16
.28
.64
.60
.26
.53
.75
.11
.19
.34
.36
.05
.09
.13
.13
.31
.22
.39
.76
.47
.36
.68
100
Output
Torque
83
227
166
267
454
933
180
309
551
1512
1777
411
714
1276
2789
208
366
649
756
1450
1267
2270
4980
2042
1134
1961
3466
463
804
1428
1617
3120
4198
227
391
706
794
1550
1374
2433
4663
5420
2163
7109
6504
1197
2048
3671
4018
473
831
1286
1663
3233
2836
5105
10683
5445
4470
12816
Worm
Cat.
No.
H1607
H1627
H1607
H1618
H1627
H1638
H1607
H1618
H1627
H1638
H1638
H1607
H1618
H1627
H1638
H1407
H1418
H1427
H1607
H1438
H1618
H1627
H1638
H1438
H1607
H1618
H1627
H1407
H1418
H1427
H1607
H1438
H1116
H1056
H1066
H1076
H1407
H1086
H1418
H1427
H1106
H1438
H1086
H1116
H1106
H1407
H1418
H1427
H1438
H1056
H1066
H1076
H1407
H1086
H1418
H1427
H1116
H1106
H1086
H1116
Gear
Cat.
No.
QB1212
QB812
QB1216
QB1016
QB816
QB616
DB1600
DB1610
DB1620A
QB620A
DB1630A
DB1601A
DB1611
DB1621A
DB1631A
DB1400
DB1410
DB1420A
DB1602A
DB620A
DB1612
DB1622
DB1632A
DB1430A
DB1603A
DB1613A
DB1623A
DB1401A
DB1411
DB1421A
QB1260A
DB1431A
G1110†
GB1050A
GB1060A
GB1070
DB1402A
GB1077A
DB1412
DB1422
GB1100
DB1432A
GB1080A
G1111†
GB1101
DB1403A
DB1413A
DB1423A
D1433†
GB1051
GB1061A
GB1071
DB1260A
GB1081A
DB1414A
DB860A
G1112†
G1102†
GB1082A
G1113†
DP
12
8
12
10
8
6
12
10
8
6
6
12
10
8
6
12
10
8
12
6
10
8
6
6
12
10
8
12
10
8
12
6
3
12
10
8
12
6
10
8
4
6
6
3
4
12
10
8
6
12
10
8
12
6
10
8
3
4
6
3
*Torque in Lb. Ins.
†Cast Iron Gear Rating with Hardened Worm shown.
All Worm and Worm Gear Ratings are based on a Hardened Steel Worm used with a Bronze Worm Gear.
1. For a Hardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .50.
2. For an Unhardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .25.
Gear Catalog
85
WORMS AND WORM GEARS
STEEL-HARDENED, GROUND AND POLISHED WORMS
BRONZE WORM GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
Worm RPM
Center
Ratio
Distance
2.167
40
2.625
3.250
4.333
3.750
48
5.000
10.000†
2.583
50
3.125
3.875
5.167
54
11.000†
3.000
60
3.625
4.500
6.000
72
7.000
3.833
80
4.625
5.750
4.667
100
5.625
7.000
Input
HP
.48
.72
1.12
2.11
1.26
2.37
4.06
.55
.83
1.30
2.43
4.34
.60
.91
1.42
2.66
2.79
.64
.96
1.49
.60
.90
1.40
1800
Output
Torque
490
742
1190
2310
1614
3110
5320
700
1068
1716
3327
5985
924
1408
2269
4370
5521
1288
1961
3165
1505
2310
3711
Input
HP
.26
.43
.71
1.39
.79
1.56
1.68
.30
.51
.82
1.60
1.79
.33
.54
.89
1.75
1.84
.35
.57
.94
.33
.54
.88
600
Output
Torque
672
1134
1974
4034
2622
5445
6608
998
1733
2836
5777
7434
1323
2142
3718
7625
9605
1849
3042
5210
2206
3571
6092
Input
HP
.06
.11
.18
.38
.20
.43
.72
.07
.12
.21
.44
.77
.08
.13
.23
.49
.51
.08
.14
.24
.08
.13
.22
100
Output
Torque
782
1361
2420
5345
3267
7260
17088
1134
1954
3498
7563
19224
1664
2571
4538
10210
12705
2118
3630
6555
2458
4223
7563
Worm
Cat.
No.
H1056
H1066
H1076
H1086
H1076
H1086
H1116
H1056
H1066
H1076
H1086
H1116
H1056
H1066
H1076
H1086
H1086
H1056
H1066
H1076
H1056
H1066
H1076
Gear
Cat.
No.
GB1052A
GB1062A
GB1072A
GB1078
GB1073
GB1083
G1114†
GB1053A
GB1063
GB850
GB1079
G1115†
GB1260A
GB1064
GB860
GB1087
GB1084
GB1054
GB1067
GB1074A
GB1055
GB1065
GB8100
DP
12
10
8
6
8
6
3
12
10
8
6
3
12
10
8
6
6
12
10
8
12
10
8
*Torque in Lb. Ins.
†Cast Iron Gear Rating with Hardened Worm shown.
All Worm and Worm Gear Ratings are based on a Hardened Steel Worm used with a Bronze Worm Gear.
1. For a Hardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .50.
2. For an Unhardened Steel Worm used with a Cast Iron Gear, multiply the listed Rating by .25.
CENTER DISTANCES AND RATIOS AVAILABLE WITH STOCK WORM GEARING
Worm Thread
Center
No. of
Distance
Teeth Single Double Quad
(inches) Pitch in Gear
Ratio
.375
.479
.531
.583
.666
.688
.688
.792
.844
.875
.938
1.000
1.000
1.083
1.156
1.208
1.250
1.292
1.333
1.469
1.500
1.562
1.625
1.719
1.750
1.750
48
48
32
48
24
48
32
48
32
24
16
48
32
24
32
48
16
24
12
32
24
16
10
32
24
12
20
30
20
40
20
50
30
60
40
30
20
80
50
40
60
100
30
50
20
80
60
40
20
96
72
30
20
30
20
40
20
50
30
60
40
30
20
80
50
40
60
100
30
50
20
80
60
40
20
96
72
30
10
15
10
20
10
25
15
30
20
15
10
40
25
20
30
50
15
25
10
40
30
20
10
48
36
15
5
7.5
5
10
5
12.5
7.5
15
10
7.5
5
20
12.5
10
15
25
7.5
12.5
5
20
15
10
5
24
18
7.5
Worm Thread
Center
No. of
Distance
Teeth Single Double Quad
(inches) Pitch in Gear
Ratio
1.781
1.875
1.917
2.000
2.125
2.167
2.188
2.250
2.333
2.583
2.625
2.625
2.667
2.812
3.000
3.000
3.125
3.250
3.438
3.500
3.625
3.750
3.833
3.875
4.000
4.000
32
16
24
8
10
12
16
24
24
12
10
8
6
16
12
6
10
8
16
6
10
8
12
8
6
4
100
50
80
20
30
40
60
96
100
50
40
30
20
80
60
24
50
40
100
30
60
48
80
50
36
20
100
50
80
20
30
40
60
96
100
50
40
30
20
80
60
24
50
40
100
30
60
48
80
50
36
20
50
25
40
10
15
20
30
48
50
25
20
15
10
–
30
12
25
20
–
15
30
–
40
25
–
–
25
12.5
20
5
7.5
10
15
24
25
12.5
10
7.5
5
20
15
6
12.5
10
–
7.5
15
–
–
12.5
–
–
Worm Thread
Center
No. of
Distance
Teeth Single Double Quad
(inches) Pitch in Gear
Ratio
4.333
4.500
4.500
4.625
4.667
5.000
5.000
5.167
5.500
5.625
5.750
6.000
6.000
6.500
6.750
7.000
7.000
7.000
7.500
7.667
8.000
9.000
9.333
9.500
10.000
11.000
6
8
4
10
12
6
3
6
4
10
8
6
3
4
8
8
6
3
4
6
3
6
6
4
3
3
Example: Given a center distance of 2.625", Table lists Worm and Worm Gear Ratios available:
10 Pitch, 40 tooth, single = 40 to 1
8 Pitch, 30 tooth, single = 30 to 1
10 Pitch, 40 tooth, double = 20 to 1
8 Pitch, 30 tooth, double = 15 to 1
10 Pitch, 40 tooth, quad = 10 to 1
8 Pitch, 30 tooth, quad = 7.5 to 1
86
Gear Catalog
40
60
24
80
100
48
18
50
32
100
80
60
24
40
96
100
72
30
48
80
36
96
100
64
48
54
40
60
24
80
100
48
18
50
32
100
80
60
24
40
96
100
72
30
48
80
36
96
100
64
48
54
20
30
–
40
–
–
–
25
–
50
–
30
–
–
–
–
36
–
–
–
–
–
–
–
–
–
10
15
–
20
–
–
–
12.5
–
–
–
15
–
–
–
–
18
–
–
–
–
–
–
–
–
–
STOCK ALTERED CUSTOM GEARS
Customer-ized
Gearing
MODIFY STOCK GEARING TO MEET CUSTOMERS
UNIQUE REQUIREMENTS WITHIN 24 HOURS
Stock Product
Alterations
Within 24-Hours
•• FACE WIDTH REDUCED
•• HUB PROJECTION REDUCED
•• HUB DIAMETER REDUCED
•• BORES ENLARGED
•• KEYWAY(S) ADDED
•• TAPPED HOLES ADDED
FOR SET SCREWS
Keyways and bores available in
common metric sizes.
Custom Gearing built to your print
or specifications
Call Boston Gear Today!!!
Phone 1-888-999-9860!
In Canada: 1-800-221-5079
Fax: 1-800-752-4327
SECTION CONTENTS
STOCK PRODUCT ALTERATIONS ......................................................................................................... 87
CUSTOM GEAR CAPABILITIES............................................................................................................... 88
CUSTOM GEAR QUOTATION FORMS.................................................................................................... 89
Gear Catalog
87
CUSTOM GEAR CAPABILITIES
1. GEAR TYPES:
4. TOLERANCES:
Features
Spur
Helical
Miter & Bevel
Worm & Worm Gear
AGMA 9 Non-Heat Treated,
Spur & Helical Gears only;
AGMA 8 Heat Treated & Non-Heat Treated,
all other gears.
Worm & Worm Gears do not have AGMA Class listings,
however Boston Gear manufacturing tolerances relate to
AGMA 8.
Gear
Type
Diametral
Pitch
Spur
Helical
Internal Spur
Bevel & Miter
Worm
Worm Gear
Shaved Gear
Splines
64DP-3DP
64DP-3DP
64DP-3DP
64DP-3DP
48DP-3DP
48DP-3DP
24DP-3DP
Pitch
Diameter
Face
Max.
.250"-36.000"
5.000"
.337"-24.000"
5.000"
1.000"-24.000"
5.000"
.500"-24.000"
3.000"
.333"-4.000"
12.000"
.420"-24.000"
5.000"
1.000"-24.000"
5.000"
Consult Engineering
.0010"
.0010"
.0020"
.0020"
.0020"
.0100"
2B Thread
5. GEOMETRIC DIMENSIONING:
Features
² 2" Diameter
> 2" Diameter
Perpendicularity
.0010"
.0010"
Parallelism
Circular Runout
Flatness
Concentricity
.0010"
.0010"
.0010"
.0005"
.0010"
.0010"
.0010"
.0010"
6. BACKLASH:
Refer to Engineering Information found on pages 140
and 145.
Refer to engineering for backlash related to helical and
worm gearing.
Circular Pitch (.0491”-1.0472”) or Module Pitch (.4mm8mm) within the Diametral Pitch Limits are optional (refer
to page 139).
Module
Diametral
Pitch
Circular
Pitch (Inches)
.4
.5
.6
.8
1
1.25
1.5
2
2.5
3
4
5
6
8
63.500
50.800
42.333
31.750
25.400
20.320
16.933
12.700
10.160
8.467
6.350
5.080
4.233
3.175
.0495
.0618
.0742
.0989
.1237
.1546
.1855
.2474
.3092
.3711
.4947
.6184
.7422
.9895
25 pcs
10 pcs
5 pcs
Minimum Quantity on 6" OD and less;
Minimum Quantity on 6" OD to 18" OD;
Minimum Quantity on 18" OD and over.
8. FINISHES:
63 RMS Minimum on gear teeth;
32 RMS Minimum on Bores, Shaved Gear Teeth, Ground
Worms, and Machined Surfaces.
9. MATERIAL:
Description
Gear Catalog
Designation
Low Carbon Steels
11L17, 12L14, 12L15
Medium Carbon Steels
11L41, 1045
Low Carbon Alloy Steels
86(L)20* (*86L20 or 8620)
Medium Carbon Alloy Steels 41(L)30, 41(L)40, 41(L)50
Preheat Treated Steels
4140, 4150
Stainless Steels
17-4PH, 303, 304
Cast Iron
Grade 25, Grade 30
Brass
Free Cutting, Half Hard
Bronze
Non-Metallic
88
.0005"
.0005"
.0020"
.0020"
.0020"
.0100"
7. LOT SIZES:
3. CAPACITIES:
Note:
> 2" Diameter
Bore Diameter
Ground O.D.
Turned O.D.
Bore Length
Keyway Width
Keyway Depth
Tapped Holes
2. AGMA CLASS:
Note:
² 2" Diameter
Phenolic (NEMA“C”), Delron, Nylon
CUSTOM GEAR REQUEST FOR QUOTATION FORM
SPUR
HELICAL
MITER
BEVEL
WORM
WORM GEAR
Customer Name _________________________________________________________
Date _______________________
Address________________________________________________________________
Ref. _______________________
City/State __________________________________________Zip _________________
Quantity Req. _______________
Tel. No. ______________________________Fax No. __________________________
P.O. No. ____________________
Contact ________________________________________________________________
TYPE OF GEAR
SPUR
HELICAL
MITER
BEVEL
WORM
WORM GEAR
No. of Teeth
Pitch (DP, CP MOD)
Pressure Angle
Helix Angle
Hand (LH, RH)
Material
Face Width
Length Through Bore
Hub Diameter
Hub Projection
Bore Diameter
Keyway
Setscrew(s)
Teeth in Mating Gear
Center Distance
Mounting Distance
No. of Starts (Thread)
Outside Diameter
Heat Treat — Yes/No
Depth of Hardness
SPECIAL INFORMATION
Mail to or call:
Boston Gear
14 Hayward Street
Quincy, MA 02171
tel
fax
617.328.3300
617.479.6238
Gear Catalog
89
SHAFT COUPLINGS
SECTION CONTENTS
INSERT (3 JAW) TYPE
GENERAL DESCRIPTION / SELECTION PROCEDURE.................................................................91
STEEL—BORED & SOLID HUBS.....................................................................................................92
SPIDER RING (3 JAW) TYPE ....................................................................................................................93
SHEAR TYPE..............................................................................................................................................94
CLAMPING TYPE .......................................................................................................................................95
MULTI-JAW TYPE ......................................................................................................................................96
RIGID (ONE PIECE) TYPE .........................................................................................................................96
SLEEVE TYPE ............................................................................................................................................97
ENGINEERING INFORMATION ...............................................................................................................151
90
Gear Catalog
SHAFT COUPLINGS
INSERT (3-JAW) TYPE
FC SERIES
PRECISION MACHINED BORED OR SOLID HUBS
THREE TYPES OF INSERTS for different service requirements.
NO LUBRICATION NEEDED
BORE SIZES FROM 3/8" TO 2-1/8"
COMPLETE WITH KEYWAY AND SETSCREW
REFERENCE PAGES
Alignment—151
Keyways and Setscrews—153
COUPLING INSERTS
OIL-IMPREGNATED BOST-BRONZ—Recommended for high torque loads, particularly at slower speeds.
OIL-RESISTANT SYNTHETIC RUBBER—Recommended where quietness is desired, particularly at motor speeds.
POLYURETHANE—Recommended where moderate to heavy shock loads are encountered.
LOAD DATA
HORSEPOWER AND TORQUE RATING AT
RECOMMENDED SPEEDS FOR INSERTS INDICATED
Coupling
Size
Shaft
Diameter
Range
SELECTION PROCEDURE
Maximum Horsepower Rating at RPM of *
50
100
300
690
870
1150
1750
XFCBB BOST-BRONZ INSERTS
.32
.95 2.2 2.8
3.6
5.6
.79 2.4
5.5 6.9
9.1 13.9
1.6
4.8 10.9 13.8
18.2
—
2.9
8.6 19.7 24.8
—
—
5.1 15.2 35.0
—
—
—
11.1 33.3
—
—
—
—
17.5
—
—
—
—
—
XFCR RUBBER INSERTS
—
.10
.31
.71 .90
1.2
1.8
—
.20
.60 1.4 1.7
2.3
3.5
—
.40 1.2
2.7 3.5
4.6
6.9
—
.71 2.1
4.9 6.2
8.2 12.5
—
1.3
3.8
8.8 11.0
14.6 22.2
—
2.5
7.6 17.5 22.1
29.2 44.4
—
4.4 13.3 30.7 38.7
51.1 77.7
XFCA POLYURETHANE INSERTS
.09 .19
.56 1.2 1.6
2.0
3.0
.18 .37 1.1
2.5 3.1
4.0
6.0
.35 .70 2.1
4.6 5.7
7.5 11.1
.62 1.2
3.7
8.1 10.1
13.1 19.3
1.1 2.2
6.5 14.4 17.9
23.3 34.3
2.2 4.3 12.9 28.4 35.3
45.8 67.3
3.7 7.5 22.4 49.2 61.0
79.0 115.9
Max.
Torque
3450 (Lb. Ins.)
FC12
3/8–5/8
.16
FC15
1/2–7/8
.40
FC20 1/2–1-1/8
.79
FC25 3/4–1-3/8 1.4
FC30
1–1-5/8
2.5
FC38 1-1/4–1-7/8 5.6
FC45 1-3/4-–2-1/8 8.7
—
—
—
—
—
—
—
FC12
3/8–5/8
FC15
1/2–7/8
FC20 1/2–1-1/8
FC25 3/4–1-3/8
FC30
1–1-5/8
FC38 1-1/4–1-7/8
FC45 1-3/4–2-1/8
3.6
6.8
13.7
24.6
43.8
—
—
65
125
250
450
800
1600
2800
5.7
11.3
20.7
35.8
63.6
—
—
125
250
470
845
1500
3000
5250
FC12
3/8–5/8
FC15
1/2–7/8
FC20 1/2–1-1/8
FC25 3/4–1-3/8
FC30
1–1-5/8
FC38 1-1/4–1-7/8
FC45 1-3/4–2-1/8
200
500
1000
1800
3200
7000
11000
1. From Table select Service Factor.
2. Determine Design Load
Design HP = Application HP x S.F.
or
Design Torque = Application Torque x S.F.
3. Select coupling size from Load Rating
Table which has a rating equal to or
greater than the design load.
COUPLING SERVICE FACTORS
Load
Classification
Uniform
Moderate Shock
Heavy Shock
Service
Factor
1.00
1.75
2.50
HP = T x RPM
63,025
*For Uniform Load.
Gear Catalog
91
SHAFT COUPLINGS
INSERT (3-JAW) TYPE
FC SERIES
BORED AND SOLID HUBS
OVERALL
LENGTH
KEYWAY
SETSCREW
O.D.
STANDARD TOLERANCES
HUB
DIA.
BORE
DIMENSION
BORE
BORE
LENGTH
All
TOLERANCE
+.001 –.000
HUB
PROJ.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
To order complete coupling order two coupling halves and one coupling insert.
Coupling
Size Bore
FC12
FC15
FC20
FC25
FC30
FC38
FC45
—
3/8
7/16
1/2
5/8
—
1/2
9/16
5/8
3/4
7/8
—
1/2
9/16
5/8
3/4
7/8
15/16
1
1-1/8
—
3/4
7/8
1
1-1/8
1-3/16
1-1/4
1-3/8
—
1
1-1/8
1-1/4
1-3/8
1-7/16
1-1/2
1-5/8
—
1-1/4
1-1/2
1-9/16
1-5/8
1-3/4
1-7/8
—
1-3/4
1-7/8
2
2-1/8
Bore
Length+
Overall
Length
O.D.
++
Assembly
ClearProj. ance†
Hub
Dia.
—
.94
1.25
2.32
1.00
.62
3.19
1.50
2.76
1.25
.75
3.75
2.00
3.69
1.75
1.12
4.81
2.50
4.13
2.25
1.25
5.38
3.00
5.48
2.75
1.69
7.00
3.75
6.32
3.50
1.88
8.19
4.50
7.19
4.00
2.12
9.31
—
1.13
—
1.57
—
1.76
—
2.35
—
2.69
—
3.07
Coupling
Halves
Catalog
Item
Number Code
FC12 SOLID
FC12–3/8
FC12–7/16
FC12–1/2
FC12-5/8
FC15 SOLID
FC15–1/2
FC15–9/16
FC15–5/8
FC15–3/4
FC15–7/8
FC20 SOLID
FC20–1/2
FC20–9/16
FC20–5/8
FC20–3/4
FC20–7/8
FC20–15/16
FC20–1
FC20-1-1/8
FC25 SOLID
FC25–3/4
FC25–7/8
FC25–1
FC25–1-1/8
FC25–1-3/16
FC25–1-1/4
FC25-1-3/8
FC30 SOLID
FC30–1
FC30–1-1/8
FC30–1-1/4
FC30–1-3/8
FC30–1-7/16
FC30–1-1/2
FC30-1-5/8
FC38 SOLID
FC38–1-1/4
FC38–1-1/2
FC38–1-9/16
FC38–1-5/8
FC38–1-3/4
FC38–1-7/8
FC45 SOLID
FC45–1-3/4
FC45–1-7/8
FC45–2
FC45–2-1/8
47448
08246
08248
08250
52405
47449
08252
61421
08254
08256
61422
47450
08258
66063
08260
08262
08264
08266
08268
52406
47451
08270
08272
08274
08276
08278
08280
52408
47452
08282
08284
08286
08288
08290
08292
52409
24650
08294
08296
08298
08300
08302
08304
24816
08306
08308
08310
08312
Bost-Bronz
Catalog Item
Number Code
Coupling Inserts
Rubber
Polyurethane
Catalog Item Catalog Item
Number Code Number Code
XFCBB12 08064
XFCR12 08078 XFCA12 08050
XFCBB15 08066
XFCR15 08080 XFCA15 08052
XFCBB20 08068
XFCR20 08082 XFCA20 08054
XFCBB25 08070
XFCR25 08084 XFCA25 08056
XFCBB30 08072
XFCR30 08086 XFCA30 08058
XFCBB38 08074
XFCR38 08088 XFCA38 08060
XFCBB45 08076
XFCR45 08090 XFCA45 08062
+Length of hole in each half.
++Total length of coupling with jaws engaged full depth.
†Total length of coupling with jaws completely disengaged for insert assembly.
92
Gear Catalog
SHAFT COUPLINGS
SPIDER RING (3-JAW) TYPE
BF SERIES
BOST-FLEX®
ECONOMICAL 3-JAW COUPLING
SPIDER RING URETHANE INSERTS absorb shock and vibration.
Provides thru-bore opening for close coupling of shafts.
BORE SIZES FROM 3/8" TO 1-1/4"
COMPLETE WITH KEYWAY AND SETSCREW
OVERALL
LENGTH
KEYWAY
O.D.
HUB
DIA.
BORE
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
All
E
+.001 –.000
F
SETSCREW
REFERENCE PAGES
Alignment—151
Keyways and Setscrews—153
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
(Includes two coupling halves and one coupling insert.)
Coupling
Size
BF7
Bore
A
B
3/8
3/8
1/2
1/2
1/2
5/8
3/4
5/8
3/4
3/4
3/4
7/8
1
7/8
1
1
1
1-1/8
1-1/4
1-1/8
1-1/4
1-1/4
1/2
1/2
BF10
5/8
3/4
3/4
BF13
7/8
1
1
BF18
1-1/8
1-1/4
Hub
Dia.
O.D.
Overall
Length
E
F
Assem.
Clear.
Approx.
Weight
(Oz.)
.88
1.22
1.35
.50
.34
1.66
2
1.26
1.59
1.97
.75
.46
2.41
6.5
1.62
1.97
2.47
.94
.59
3.00
14
2.25
2.72
2.97
1.13
.71
3.66
37
SELECTION PROCEDURE
Coupling
Catalog
Number
Item
Code
BF7 3/8–3/8
BF7 3/8–1/2
BF7 1/2–1/2
BF10 1/2–1/2
BF10 1/2–5/8
BF10 1/2–3/4
BF10 5/8–5/8
BF10 5/8–3/4
BF10 3/4–3/4
BF13 3/4–3/4
BF13 3/4–7/8
BF13 3/4–1
BF13 7/8–7/8
BF13 7/8–1
BF13 1–1
BF18 1–1
BF18 1–1-1/8
BF18 1–1-1/4
BF18 1-1/8–1-1/8
BF18 1-1/8–1-1/4
BF18 1-1/4–1-1/4
Replacement
Insert
Item
Code
11730
11734
11732
11736
11742
11744
11738
11746
11740
11748
11754
11756
11750
11758
11752
11760
11766
11768
11762
11770
11764
11722
11724
11726
11728
HORSEPOWER AND TORQUE RATING AT
RECOMMENDED SPEEDS FOR INSERTS INDICATED
For Service Factors and Procedure, refer to
FC Couplings (Page 91).
Size
100
300
690
870
1150
1750
3450
Max
Torque
(Lb. Ins.)
BF 7
BF 10
BF 13
BF 18
.044
.11
.25
.48
.13
.34
.76
1.40
.31
.78
1.70
3.30
.39
1.00
2.20
4.10
.51
1.30
2.90
5.50
.78
2.00
4.40
8.30
1.5
3.9
8.8
16.4
28
72
160
300
Maximum Horsepower Rating at RPM of *
*For uniform load.
Gear Catalog
93
SHAFT COUPLINGS
SHEAR TYPE
BG SERIES
METAL HUBS JOINED BY PERMANENTLY BONDED ELASTOMER
require no lubrication. Flexible in any direction—accommodates
misalignment up to 1/32" parallel, 2° angular.
HIGH TORSIONAL DEFLECTION isolates low frequency vibration.
BORE SIZES FROM 1/8" TO 1"
COMPLETE WITH STANDARD SETSCREWS (Not installed).
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Coupling
Size
Bore
A
1/8
BG47
3/16
1/4
3/16
BG11-1
OVERALL
LENGTH
SETSCREW
BORE
A
O.D.
BORE
B
HUB
DIA.
1/4
5/16
1/4
BG11-2
5/16
3/8
F
5/16
BG11-3
3/8
1/2
STANDARD TOLERANCES
DIMENSION
BORE
3/8
TOLERANCE
1/8–3/8
1/2–5/8
3/4–1
+.001 –.000
+.0015 –.000
+.002 –.000
BG11-4
1/2
5/8
1/2
REFERENCE PAGES
BG11-5
5/8
3/4
Alignment—151
Keyways and Setscrews—153
1/2
BG11-6
5/8
3/4
1/2
5/8
BG11-7
3/4
1
B
1/8
3/16
1/4
3/16
1/4
1/4
3/16
1/4
1/4
5/16
5/16
1/4
5/16
3/8
5/16
3/8
3/8
5/16
3/8
1/2
3/8
1/2
1/2
3/8
1/2
5/8
1/2
5/8
5/8
1/2
5/8
3/4
5/8
3/4
1/2
3/4
5/8
3/4
3/4
3/4
5/8
3/4
3/4
7/8
1
Hub
Dia.
O.D.
Overall
Length
F*
7/16
9/16
13/16
3/16
5/8
13/16
1-3/8
11/32
3/4
1
1-3/4
13/32
7/8
1-1/4
2-1/8
15/32
1
1-3/8
2-1/4
17/32
1-1/8
1-5/8
2-1/2
19/32
1-3/8 1-13/16 2-11/16
1-1/2
2
2-7/8
11/16
3/4
Catalog
Number
BG47-2-2
BG47-2-3
BG47-2-4
BG47-3-3
BG47-3-4
BG47-4-4
BG11-1-3-3
BG11-1-3-4
BG11-1-4-4
BG11-1-4-5
BG11-1-5-5
BG11-2-4-4
BG11-2-4-5
BG11-2-4-6
BG11-2-5-5
BG11-2-5-6
BG11-2-6-6
BG11-3-5-5
BG11-3-5-6
BG11-3-5-8
BG11-3-6-6
BG11-3-6-8
BG11-3-8-8
BG11-4-6-6
BG11-4-6-8
BG11-4-6-10
BG11-4-8-8
BG11-4-8-10
BG11-4-10-10
BG11-5-8-8
BG11-5-8-10
BG11-5-8-12
BG11-5-10-10
BG11-5-12-12
BG11-6-8-8
BG11-6-8-12
BG11-6-10-10
BG11-6-10-12
BG11-6-12-12
BG11-7-8-12
BG11-7-10-10
BG11-7-10-12
BG11-7-12-12
BG11-7-12-14
BG11-7-16-16
Item
Code
49887
49888
49889
49890
49891
49892
49893
49894
49895
49896
49897
49898
49899
49900
49901
49902
49903
49904
49905
49906
49907
49908
49909
49910
49911
49912
49913
49914
49915
49916
49917
49918
49919
49920
49921
49922
49923
49924
49925
49926
49927
49928
49929
49930
49931
*Shafts should not extend into “F” dimension.
HORSEPOWER AND TORQUE RATING AT
RECOMMENDED SPEEDS FOR INSERTS INDICATED
LOAD DATA
Size
100
300
690
870
1150
1750
3450
Max
Torque
(Lb. Ins.)
BG-47
BG11-1
BG11-2
BG11-3
BG11-4
BG11-5
BG11-6
BG11-7
.001
.004
.007
.014
.019
.029
.043
.057
.003
.011
.021
.043
.057
.086
.129
.171
.008
.025
.049
.099
.131
.197
.296
.394
.010
.031
.062
.124
.166
.248
.313
.497
.013
.041
.082
.164
.219
.328
.493
.657
.020
.062
.125
.250
.333
.500
.750
1.000
.039
.123
.246
.493
.657
.985
1.478
1.971
.72
2.25
4.50
9.00
12.00
18.00
27.00
36.00
Maximum Horsepower Rating at RPM of *
15º torsional deflection at rated torque assures efficient vibration isolation.
94
Gear Catalog
*For uniform load.
SHAFT COUPLINGS
CLAMPING TYPE
SCC SERIES
LOW CARBON STEEL COUPLINGS with a black oxide finish.
BORE SIZES FROM 1/4” TO 2”
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
A
B
1/4
1/4
1/4
3/8
3/8
1/2
1/2
5/8
1/2
5/8
3/4
5/8
7/8
1
1
1-1/8
1
1-1/4
1
1-3/8
1
1-1/2
1-3/4
2
3/8
1/2
OUTSIDE
DIA.
5/8
LENGTH
3/4
BORE
(A)
BORE (B)
7/8
1
1-1/8
CLAMP SCREW
1-1/4
1-3/8
STANDARD TOLERANCES
1-1/2
DIMENSION
1-3/4
2
BORE
All
TOLERANCE
+.001 –.000
O.D.
13/16
1-1/4
4-40
1-1/16
1-5/8
6-32
1-1/4
1-7/8
8-32
1-1/2
2-1/4
10-32
1-3/4
2-5/8
1/4-28
1-7/8
2-7/8
1/4-28
2
3
1/4-28
2-1/8
3-1/4
1/4-28
2-1/4
3-3/8
1/4-28
2-3/8
3-5/8
1/4-28
2-1/2
3-3/4
1/4-28
3
3-1/4
4-1/2
4-7/8
5/16-24
5/16-24
LOAD DATA
Capacity is based on a standard steel, onepiece coupling mounted with recommended
screw torque on a dry shaft. Capacities
shown are for general guidance only. In
applications involving control of torque
loads, capacity should be determined
experimentally on actual parts involved.
Clamp
Length Screws (4)
Catalog
Number
Item
Code
SCC1/4x1/4
SCC3/8x1/4
SCC3/8x3/8
SCC1/2x3/8
SCC1/2x1/2
SCC5/8x1/2
SCC5/8x5/8
SCC3/4x1/2
SCC3/4x5/8
SCC3/4x3/4
SCC7/8x5/8
SCC7/8x7/8
SCC1x1
SCC1-1/8x1
SCC1-1/8x1-1/8
SCC1-1/4x1
SCC1-1/4x1-1/4
SCC1-3/8x1
SCC1-3/8x1-3/8
SCC1-1/2x1
SCC1-1/2x1-1/2
SCC1-3/4x1-3/4
SCC2x2
49289
49290
49291
49292
49293
49294
49295
49296
49297
49298
49299
49300
49302
49303
49304
49305
49306
49307
49308
49309
49310
49312
49314
TORQUE CAPACITY
Bore
Torque
Capacity
(Lb. Ins.)
1/4
3/8
1/2
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-3/4
2
72
192
480
1200
1500
1680
1920
2200
3000
3500
4000
5400
6000
Screw
Size
Recommended
Screw Torque
(Lb. Ins.)
4-40
6-32
8-32
10-32
20
30
55
90
1/4-28
220
5/16-24
435
Gear Catalog
95
SHAFT COUPLINGS
MULTI-JAW TYPE
FA SERIES
UNTREATED STEEL COUPLINGS for use in light duty applications,
require no lubrication.
BORE SIZES FROM 3/16" TO 1/2"
COMPLETE WITH STANDARD SETSCREWS
OVERALL
LENGTH
SETSCREW
BORE
O.D.
STANDARD TOLERANCES
DIMENSION
BORE
BORE
LENGTH
TOLERANCE
All
HUB
DIA.
HUB
PROJ.
±.0005
REFERENCE PAGES
Alignment—151
Keyways and Setscrews—153
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Steel
Coupling
Size
Bore
3/16
7/32
1/4
5/16
3/8
7/16
1/2
FA5
FA75
FA10
O.D.
Bore
Assembly
Length† Length++ Clearance‡
Hub
Dia.
Proj.
Teeth
1/2
1-1/8
.48
.48
7/16
7/16
10
3/4
1-1/2
5/8
1-3/4
11/16
33/64
10
1
2
.86
.86
15/16
3/4
12
Catalog
Number
Item
Code
FA5 3/16–3/16
FA5 7/32–7/32
FA5 1/4–1/4
FA75 5/16–5/16
FA75 3/8–3/8
FA10 7/16–7/16
FA10 1/2–1/2
07900
07902
07904
07910
07912
07908
07906
†Total length of coupling with jaws engaged full depth.
++Length of hole in each half.
‡Approximate total length of coupling with jaws completely disengaged.
RIGID (ONE PIECE) TYPE
CR SERIES
BORE SIZES FROM 1/4" TO 1-1/4"
COMPLETE WITH STANDARD SETSCREWS
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
SETSCREW
A
O.D.
A
Bore
O.D.
Overall
Length
A
1/4
5/16
3/8
1/2
5/8
3/4
7/8
1
1-1/4
.48
.60
.72
.97
1.21
1.47
1.72
1.96
2.21
3/4
1
1
1-1/2
2
2
2
3
4
3/16
1/4
1/4
3/8
1/2
1/2
1/2
3/4
1
Setscrew
#6-32
#10-32
#10-32
1/4-20
1/4-20
3/8-16
3/8-16
3/8-16
1/2-13
REFERENCE PAGES
BORE
Keyways and Setscrews—153
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
96
Gear Catalog
All
TOLERANCE
+.001 –.000
Catalog
Number
Item
Code
CR4
CR5
CR6
CR8
CR10
CR12
CR14
CR16
CR20
34200
34202
34204
34206
34208
34210
34212
34214
34216
SHAFT COUPLINGS
SLEEVE TYPE
FCP SERIES
SPLINED HUBS AND URETHANE SLEEVE accommodate
misalignment to 5°.
SLEEVE STOCK available for producing special lengths.
NO LUBRICATION NEEDED
COMPLETE WITH SETSCREWS
L
A
2
MATERIALS
Urethane Sleeves
Delrin Hubs
Aluminum Alloy Inserts
SETSCREW
A
1
16
BORE
O.D.
H
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
All
INSERT
E
+.001 –.000
HUB
REFERENCE PAGES
Alignment—151
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
.125
.1875
.250
.3125
.375
.4375
.500
O.D.
A
E
H
L
37/64
7/32
7/16
9/16
15/16
1-5/64
3/8
11/16
1
1-9/16
Setscrew
4-40
6-32
8-32
10-32
1/4-20
LOAD DATA
Complete Coupling
Catalog
Item
Number
Code
Insert and Hub Assembly
Catalog
Item
Number
Code
FCP21-1/8
FCP21-3/16
FCP21-1/4
FCP23-5/16
FCP23-3/8
FCP23-7/16
FCP23-1/2
XFCP21-1/8
XFCP21-3/16
XFCP21-1/4
XFCP23-5/16
XFCP23-3/8
XFCP23-7/16
XFCP23-1/2
54893
54894
54895
54899
54900
54901
54902
54903
54904
54905
54909
54910
54911
54912
Sleeve Only
Catalog
Item
Number
Code
X5R21-16
54913
X5R23-32
54915
SLEEVE STOCK
HORSEPOWER RATINGS (Maximum) AT 1750 RPM
ORDER BY CATALOG NUMBER OR ITEM CODE
Size
Horsepower
O.D.
Length (Inches)
Catalog Number
Item Code
FCP21
FCP23
1/20
1/2
1/2
1
10
12
5R21-16S
5R23-32S
54916
54918
Gear Catalog
97
GEAR COUPLINGS
ORDERING INFORMATION
GEAR COUPLING PART NUMBERING SYSTEM
1-1/2
GC
Coupling Size
0
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
4-1/2
5
5-1/2
6
7
-
E
Type
GC = Gear Coupling
Complete
GH = Gear Coupling
Half
FF
Model
FF = Full Flex
FR = Flex Rigid
-
P16
Second Flex Hub
Bore if FF Complete
or
Rigid Hub
Bore if FR Complete
P = Bored to Size (1/16")
B = Rough Bore (B00)
M = Metric Bored to Size (mm)
Style
E = Exposed Bolts
S = Shrouded Bolts
When ordering a complete gear coupling (two coupling halves, fasteners,
gasket, o-rings and lube plugs) please include code letters/numbers for size,
type, style, model, and both bores. Please refer to Pages 99-100 for details.
Example:
Required Size 1-1/2 complete gear coupling with shrouded bolts, two flexible
halves with one half bored to one inch and the other half bored to two inches.
GC
S
FF
P16
P32
HOW TO ORDER – COUPLING HALF (ONE HALF ONLY)
When ordering a complete coupling half (one coupling half, fasteners, gasket,
o-rings and lube plugs) please include code letters/numbers for size, type,
style, model, and bore. Please refer to Pages 99-100 for details.
Example:
Required Size 2-1/2 complete gear coupling half with exposed bolts, flexible
half bored to one inch:
2-1/2
98
GH
E
FF
Gear Catalog
P16
P16
Hub
Bore
P = Bored to Size (1/16”)
B = Rough Bore (B00)
M = Metric Bored to Size (mm)
HOW TO ORDER – COMPLETE COUPLING (TWO HALVES)
1-1/2
-
GEAR COUPLINGS
MODEL FF FULL FLEX
FLEXIBLE COUPLINGS
Description: The Model FF Flexible Coupling is designed
with bolted center flanges to facilitate installation and alignment. Optimum separation of gear meshes permits high parallel offset capacity. Flanged-sleeve design makes possible minimum distances between bearing housings to facilitate shaft
alignment. In addition, Model FF hubs are designed with a
greater bore capacity.
•
•
•
•
±1-1/2° angular misalignment capacity
Torque ratings at full misalignment
Precision machined carbon steel hubs and sleeves
O-ring seals enshrouded to prevent damage
A
DIA.
C
B
DIA.
C
D
F
DIA.
LUBE PLUG
2 @ 180°
EACH
FLANGE
E
G
ALL DIMENSIONS IN INCHES
Load Capacity
Parallel
HP Per Torque Maximum
Square Reduced Offset
A
100 (Lb. In.)
RPM
Key
Key
Capacity**
RPM
x 103
0.81
0.88
.023
3
1.9
8,500
2.94
1.25
1.31
.042
5
3.2
7,700
3.56
1.63
1.75
.057
12
7.6
7,100
4.00
2.25
2.38
.058
27
17.0
5,400
6.00
2.75
2.88
.079
50
31.5
4,800
7.00
3.50
3.75
.102
85
53.6
4,300
8.38
4.00
4.25
.119
150
94.5
4,000
9.44
4.50
4.75
.142
225
142
3,600
11.00
5.50
5.88
.164
340
214
3,200
12.50
6.25
6.75
.187
515
324
3,000
13.62
6.62
6.75
.218
660
416
2,600
15.31
7.50
7.62
.245
875
551
2,400
16.56
8.25
8.62
.275
1,190
750
2,200
18.00
9.62
10.25
.314
1,640 1,033
1,800
20.75
Maximum Bore
Size*
0
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
4-1/2
5
5-1/2
6
7
B
C
D
E
F
G***
1.25
1.75
2.25
3.12
4.00
4.88
5.75
6.50
7.75
9.00
9.50
10.50
11.75
13.50
1.06
1.38
1.69
1.94
2.44
3.03
3.59
4.19
4.75
5.31
6.03
6.62
7.41
8.69
.12
.12
.12
.12
.12
.19
.19
.25
.25
.31
.31
.31
.31
.38
2.25
2.88
3.50
4.00
5.00
6.25
7.38
8.62
9.75
10.94
12.38
13.56
15.12
17.75
1.94
2.56
3.00
3.93
4.86
5.88
6.88
7.90
9.24
10.37
11.44
12.69
13.75
16.00
2.88
3.50
4.12
4.75
6.00
7.25
8.50
10.00
11.00
12.25
13.75
15.25
16.50
19.25
Solid
Hub
Weight
(Lbs.)
2.3
4.5
7.0
17.0
30.0
53.0
82.0
127
193
266
368
488
640
973
* Sizes 0, 1 and 1-1/4 flange fasteners are self locking socket head cap screws (S) (one flange tapped, one flange through drilled).
Sizes 1-1/2 through 5-1/2 are available with either shrouded bolts (S) or exposed bolts (E).
Sizes 6 and 7 are available with exposed bolts (E) only.
** Combined angular and parallel offset should not exceed ±1-1/2° per gear mesh.
*** Clearance for aligning coupling.
Puller holes available on a special order basis.
Refer to Page 101 for bore tolerance and flange details.
Refer to Page 98 for ordering information.
Gear Catalog
99
GEAR COUPLINGS
MODEL FR FLEX RIGID
FLEXIBLE COUPLINGS
Application: FR couplings are used primarily in tandem
pairs, connected by an intermediate floating shaft, or as an
individual unit in conjunction with a driver or driven shaft having a self-aligning support bearing. When used singularly,
they compensate for angular misalignment only.
G
DIA.
A
DIA.
1
C
C
B
DIA.
D
F
DIA.
Description: The Model FR Flexible Coupling consists of one
standard flexible coupling half and one rigid half. The bolted
center flanges facilitate installation and alignment.
LUBE PLUG
2 @ 180°
E
ALL DIMENSIONS IN INCHES
Size*
0
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
4-1/2
5
5-1/2
6
7
Maximum Bore Maximum Bore
Flex Half
Rigid Half
Square Reduced Square Reduced
Key
Key
Key
Key
0.81
0.88
1.31
1.38
1.25
1.31
1.75
1.88
1.63
1.75
2.00
2.13
2.25
2.38
2.69
2.88
2.75
2.88
3.25
3.50
3.50
3.75
4.00
4.25
4.00
4.25
4.62
5.00
4.50
4.75
5.38
5.75
5.50
5.88
6.25
6.75
6.25
6.75
6.88
7.38
6.62
6.75
7.88
8.38
7.50
7.62
8.75
9.25
8.25
8.62
9.38
9.88
9.62
10.25
10.75
11.50
Load Capacity
HP Per Torque Maximum
A
B
C
C1
100 (Lb. In.) RPM
RPM x 103
3
1.9
8,500
2.94 1.25 1.06 1.05
5
3.2
7,700
3.56 1.75 1.38 1.23
12
7.6
7,100
4.00 2.25 1.69 1.48
27
17.0
5,400
6.00 3.12 1.94 1.78
50
31.5
4,800
7.00 4.00 2.44 2.28
85
53.6
4,300
8.38 4.88 3.03 2.91
150
94.5
4,000
9.44 5.75 3.59 3.41
225
142
3,600 11.00 6.50 4.19 3.97
340
214
3,200 12.50 7.75 4.75 4.44
515
324
3,000 13.62 9.00 5.31 5.00
660
416
2,600 15.31 9.50 6.03 5.75
875
551
2,400 16.56 10.50 6.62 6.12
1,190 750
2,200 18.00 11.75 7.41 7.16
1,640 1,033
1,800 20.75 13.50 8.69 8.44
D
E
F
G
.08
.08
.08
.16
.16
.19
.19
.22
.31
.34
.34
.34
.41
.50
2.19
2.69
3.25
3.88
4.88
6.12
7.19
8.38
9.50
10.66
12.12
13.09
14.97
17.62
1.94
2.56
3.00
3.93
4.86
5.88
6.88
7.90
9.24
10.37
11.44
12.69
13.75
16.00
1.94
2.56
3.00
3.93
4.86
5.88
6.88
7.90
9.24
10.18
11.44
12.69
13.75
15.75
Solid
Hub
Weight
(Lbs.)
2.5
4.6
7.0
18.6
32.2
56.7
85.7
134
200
275
392
507
685
1,045
* Sizes 0, 1 and 1-1/4 flange fasteners are self locking socket head cap screws (S) (Rigid flange tapped. Matching flex sleeve must be through
drilled).
Sizes 1-1/2 through 5-1/2 are available with either shrouded bolts (S) or exposed bolts (E).
Sizes 6 and 7 are available with exposed bolts (E) only.
** Combined angular and parallel offset should not exceed ±1-1/2° per gear mesh.
Puller holes available on a special order basis.
Refer to Page 101 for bore tolerance and flange details.
Refer to Page 98 for ordering information.
100
Gear Catalog
GEAR COUPLINGS
FLANGE INFORMATION
BORE TOLERANCES
X (No. and
Size Bolt)
Q
Q
P
P
A
Exposed Bolts
N
A
N
(Exposed Bolt)
N1
(Shrouded Bolt)
B
SIZES* 0 – 1-1/4
SIZES 1-1/2 – 7
Shrouded Bolts
Common Dimensions
Size
0
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
4-1/2
5
5-1/2
6
7
A
B
Q
2.94
3.56
4.00
6.00
7.00
8.38
9.44
11.00
12.50
13.62
15.31
16.56
18.00
20.75
—
—
—
3.69
4.56
5.56
6.47
7.26
8.56
9.81
10.73
11.73
12.73
15.06
0.44
0.44
0.44
0.75
0.75
0.88
0.88
1.06
1.06
1.06
1.50
1.50
1.00
1.12
N
D.B.C.
—
—
—
4.81
5.88
7.12
8.12
9.50
11.00
12.00
13.50
14.50
15.75
18.25
Exposed Bolt
X (Bolts)
No.
Size
—
—
—
—
—
—
8
3/8
6
1/2
6
5/8
8
5/8
8
3/4
8
3/4
10
3/4
8
7/8
14
7/8
14
7/8
16
1
Shrouded Bolt
N1
D.B.C.
2.38
3.00
3.44
4.81
5.81
7.00
8.00
9.28
10.62
11.75
13.19
14.44
—
—
X (Bolts)
No.
Size
4
1/4-28*
4
1/4-28*
4
1/4-28*
8
3/8
10
3/8
10
1/2
12
1/2
12
5/8
14
5/8
14
5/8
14
3/4
16
3/4
—
—
—
—
P
.12
.12
.12
.22
.22
.28
.28
.33
.33
.33
.52
.52
—
—
*Size 0, 1, 1-1/4 flange fasteners utilize self-locking socket head cap screws (one flange side is tapped, one flange side is through drilled).
BORE TOLERANCE AND FIT
Nominal Bore Size Shaft
Bore
Over Through Tolerance Tolerance
+.0000
0.0000 1.5000
-.0005/-.0010
-.0005
1.5000 3.0000
-.0010/-.0020
3.0000 4.0000
-.0015/-.0030
4.0000 5.0000
-.0020/-.0035
5.0000 7.0000 +.0000 -.0025/-.0040
-.0010 -.0030/-.0050
7.0000 8.0000
8.0000 9.0000
-.0035/-.0055
9.0000 10.0000
-.0040/-.0060
10.0000 11.0000
-.0045/-.0065
STANDARD KEYWAYS
Interference
Range
-.0000/-.0010
-.0000/-.0020
-.0005/-.0030
-.0010/-.0035
-.0015/-.0040
-.0020/-.0050
-.0025/-.0055
-.0030/-.0060
-.0035/-.0065
Nominal Bore Range
Over
Through
Width
0.312
0.438
0.562
0.875
1.250
1.375
1.750
2.250
2.750
3.250
3.750
4.500
5.500
6.500
7.500
9.000
0.438
0.562
0.875
1.250
1.375
1.750
2.250
2.750
3.250
3.750
4.500
5.500
6.500
7.500
9.000
11.000
0.094
0.125
0.188
0.250
0.312
0.375
0.500
0.625
0.750
0.875
1.000
1.250
1.500
1.750
2.000
2.500
Keyway (Inches)
Depth
Depth
Sq. Key
Red. Key
0.047
—
0.063
0.047
0.094
0.062
0.125
0.094
0.156
0.125
0.188
0.125
0.250
0.188
0.313
0.219
0.375
0.250
0.438
0.313
0.500
0.375
0.625
0.438
0.750
0.500
0.875
0.750
1.000
0.750
1.250
0.875
Gear Catalog
101
UNIVERSAL JOINTS
SECTION CONTENTS
PIN AND BLOCK TYPE
GENERAL DESCRIPTION / SELECTION PROCEDURE ............................................................ 103
STEEL & STAINLESS STEEL— BORED & SOLID HUBS ............................................................104
BOOT KITS ......................................................................................................................................104
REPLACEMENT PARTS .................................................................................................................104
FORGED TYPE
GENERAL DESCRIPTION / SELECTION PROCEDURE ..............................................................105
STEEL — COMPLETE JOINTS.......................................................................................................106
YOKES & CENTER KITS.................................................................................................................107
MOLDED TYPE
DELRIN — SINGLE & DOUBLE......................................................................................................108
DELRIN — WITH SLIDE EXTENSION ............................................................................................109
ENGINEERING INFORMATION ...............................................................................................................151
102
Gear Catalog
UNIVERSAL JOINTS
PIN AND BLOCK TYPE
STEEL AND STAINLESS STEEL
J/JS SERIES
Boston Gear precision machined J and JS Series Universal Joints are designed
for connecting shafts at angles up to 30 degrees and speeds up to 2000 RPM.
All sizes are stocked with both solid and bored hubs.
Joints J100 and J100B and larger are equipped with self-closing, ball valve oilers, creating an oil reservoir to provide enclosed lubrication.
The self-locking assembly ring on joints with 7/8" and larger hub diameter, fits
into recess provided in center bearing block and snaps around groove in small
bearing pin—assuring locking of entire assembly—allowing for quick and easy
disassembly and reassembly. Joints with 3/4" and smaller hub diameters are
locked by riveting the small bearing pin.
Joint covers (boots) keep dirt and moisture out and lubricants in.
SELECTION
EXAMPLE:
Torque ratings may be calculated from data in tables. The
tables indicate the Rated Static Torque (Lb. Ins.) of alloy and
stainless steel joints and Speed-Angle factors suggested for
various operating conditions.
The approximate service torque rating of a particular joint is
obtained by dividing the Rated Static Torque by the appropriate Speed-Angle factor.
Selecting a universal joint to satisfy a specified torque requirement is also made convenient with the data provided.
The designated torque load should be multiplied by the
appropriate Speed-Angle factor to obtain an equivalent static
torque load.
A universal joint with a rated static torque equal to or greater
than the calculated torque load would then be selected.
A pair of universal joints are desired to transmit 1/2 HP from
one shaft running at 500 RPM to another located at an angle
of 10 degrees (from a straight line).
The joints will be connected by an intermediate shaft and
arranged to operate at equal angles of 5 degrees.
A Speed-Angle factor of 9 is indicated in the table for an operating angle of 5 degrees and a speed of 500 RPM.
Torque Load = 63025 x HP = 63025 x 1/2 = 63 Lb. Ins.
RPM
500
Equivalent Static Load = Torque load x Factor
= 63 x 9 = 567 Lb. Ins.
J100 size alloy steel or JS175 size stainless steel universals
would be suggested for this application.
SPEED ANGLE FACTORS
Speed
in RPM
2000
1800
1600
1400
1200
1000
900
800
700
600
500
400
300
200
100
50
25
10
0
0
21
19
17
15
13
11
10
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.5
1.3
1.1
1.0
1/2
22
20
17.8
15.8
13.6
11.6
10.6
9.4
8.4
7.4
6.4
5.2
4.2
3.2
2.2
1.6
1.3
1.2
1.1
1
23.2
21.0
18.8
16.6
14.4
12.2
11.0
10.0
8.8
7.8
6.6
5.6
4.4
3.4
2.2
1.7
1.4
1.2
1.1
2
25.2
22.8
20.4
18.0
15.6
13.2
12.0
10.8
9.6
8.4
7.2
6.0
4.8
3.6
2.4
1.8
1.5
1.3
1.2
Operating Angle — Degrees (Deviation from Straight Line)
3
4
5
6
8
10
12
15
27.4
29.4
31.6
—
—
—
—
—
24.8
26.6
28.6
30.4
—
—
—
—
22.2
23.8
25.6
27.2
—
—
—
—
19.6
21.0
22.6
24.0
27
—
—
—
17.0
18.2
19.6
20.8
23.4
—
—
—
14.4
15.4
16.6
17.6
19.8
22
—
—
13.0
14.0
15.0
16.0
18.0
20
22
—
11.8
12.6
13.6
14.4
16.2
18
19.8
—
10.4
11.2
12.0
12.8
14.4
16
17.6
20
9.2
9.8
10.6
11.2
12.6
14
15.4
17.6
7.8
8.4
9.0
9.6
10.8
12
13.2
15.0
6.6
7.0
7.6
8.0
9.0
10
11.0
12.6
5.2
5.6
6.0
6.4
7.2
8.0
8.8
10.0
4.0
4.2
4.6
4.8
5.4
6.0
6.6
7.6
2.6
2.8
3.0
3.2
3.6
4.0
4.4
5.0
2.0
2.2
2.2
2.4
2.8
3.0
3.4
3.8
1.6
1.8
1.9
2.0
2.2
2.6
2.8
3.2
1.4
1.5
1.7
1.8
2.0
2.2
2.4
2.8
1.3
1.4
1.5
1.6
1.8
2.0
2.2
2.6
RATED STATIC TORQUE (LB. INS.)
20
—
—
—
—
—
—
—
—
—
—
18
15
12
9.0
6.0
4.6
3.8
3.4
3.0
25
—
—
—
—
—
—
—
—
—
—
—
17.6
14.0
10.6
7.0
5.2
4.4
3.8
3.6
30
—
—
—
—
—
—
—
—
—
—
—
—
16
12
8.0
6.0
5.0
4.4
4.0
STRAIGHT LINE
ALLOY STEEL UNIVERSAL JOINTS
Catalog Number
J37
J50
J62
J75
J87
J100
J112
J125
J150
J175
J200
J250
Torque — Lb. Ins.
20
80
166
320
370
600
670
1040
1680
2500
4400
7000
Catalog Number
JS37
JS50
JS62
JS75
JS87
Torque — Lb. Ins.
6
24
50
96
110
J300
J400
11,000 26,400
STAINLESS STEEL UNIVERSAL JOINTS
JS100 JS112 JS125 JS150 JS175 JS200 JS250 JS300 JS400
180
200
310
500
750
1320
1900
Gear Catalog
3100
7360
103
UNIVERSAL JOINTS
PIN AND BLOCK TYPE
STEEL AND STAINLESS STEEL
J/JS SERIES
BORED AND SOLID HUBS
STANDARD TOLERANCES
Dimensions
Tolerance
Bore
All
± .001
Hub Dia.
All
+ .000 – .003
Bore Length
All
±1/16
1-3/4 - 4-1/4
±1/64
5 - 10-5/8
±1/32
Overall Length
HUB
DIA.
OVERALL
LENGTH
2
Lubrication—151
Mounting—151
J37A-3/16
J37B
J37
J50A-1/4
J50B
J50
J62A-5/16
J62B
J62
J75A-3/8
J75B
J75
J87A-7/16
J87B
J87
J100A-1/2
J100B
J100
J112A-9/16
J112B
J112
J125A-5/8
J125B
J125
J150A-3/4
J150B
J150
J175A-7/8
J175B
J175
J200A-1
J200B
J200
J250A-1-1/4
J250B
J250
J300A-1/1/2
J300B
J300
J400A-2
J400B
J400
72467
08426
08400
72468
08428
08402
72469
08430
08404
72470
08432
08406
72471
08434
08408
72472
08436
08410
72473
72474
72475
72476
08438
08412
72477
08440
08414
72478
08442
08416
72479
08444
08418
72480
08446
08420
72481
08448
08422
72482
08450
08424
JS37B
JS37
JS50B
JS50
JS62B
JS62
JS75B
JS75
-JS87B
JS87
JS100B
JS100
JS112B
JS112
-JS125B
JS125
JS150B
JS150
JS175B
JS175
JS200B
JS200
JS250B
JS250
JS300B
JS300
JS400B
JS400
Universal Joints
Hub
Item
Bore
Dia.
Code Bore** Length
*
08472
08452
08474
08454
08476
08456
08478
08458
08480
08460
08482
08462
72483
72484
08484
08464
08486
08466
08488
08468
08490
08470
72485
72486
72487
72488
72489
72490
C
A
OVERALL
LENGTH
2
Boot Kit
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Item Catalog
Code Number
B
BORE DIA.
BORE
LENGTH
REFERENCE PAGES
Catalog
Number
C
OVERALL LENGTH
3/16
11/16
3/8
1/4
3/4
1/2
5/16
13/16
5/8
3/8
31/32
3/4
7/16
1-1/32
7/8
1/2
1-3/16
1
9/16
1-7/32
1-1/8
5/8
1-1/4
1-1/4
3/4
1-11/32
1-1/2
7/8
1-9/16
1-3/4
1
1-5/8
2
1-1/4
2-3/32
2-1/2
1-1/2
2-27/32
3
2
3-1/8
4
Approx.
Overall
Length Keyway Setscrew Weight
Lbs.
2-56NC
4-40NC
2
3/32x3/64 10-32NF
2-1/4
3/32x3/64 10-32NF
2-11/16
3/32x3/64 10-32NF
3
1/8x1/16 1/4-20NC
3-3/8
1/8x1/16 1/4-20NC
3-1/2
3/16x3/32 5/16-18NC
3-3/4
3/16x3/32 5/16-18NC
4-1/4
3/16x3/32 5/16-18NC
5
1/4x1/8
3/8-16NC
5-7/16
1/4x1/8
3/8-16NC
7
3/8x3/16 1/2-13NC
9
1/2x1/4
1/2-13NC
10-5/8
1-3/4
.04
.04
.05
.08
.08
.10
.14
.14
.18
.24
.24
.30
.31
.31
.45
.50
.50
.66
.69
.69
.88
.88
.88
1.15
1.44
1.44
1.81
2.31
2.31
2.86
3.31
3.31
4.06
6.81
6.81
8.25
12.5
12.5
15.25
25.8
25.8
31.3
A
Boot Kits†
Catalog† Item
B
C Number Code
1-1/32 1-1/32
9/32
UB37
47602
1-1/4
1-5/16 11/32
UB50
47603
1-1/2
1-7/16 13/16
UB62
47604
1-3/4
1-9/16
9/16
UB75
47605
1-13/16 19/32
UB87
47606
UB100
47607
2-9/16 2-7/16 17/32
UB112
72491
2-7/8
2-3/4
1/2
UB125
47608
3-1/4
3-1/4
1/2
UB150
47609
3-5/8
3-3/4
5/8
UB175
47610
4-1/2
4-3/16
5/8
UB200
47611
5-1/2
4-7/8 1-1/16
UB250
47612
5-5/8 1-11/16 UB300
47613
6-5/8
47614
2
2-1/4
6
6-7/8
2-1/8
5/8
2
UB400
*Approximate Hub Projection
†Each Kit contains (2) Boots and (4) Ties together with complete instructions for installation and lubrication.
**Style A includes bore, keyway and setscrew. Style B includes bore only
REPLACEMENT PARTS
ORDER BY UNIVERSAL JOINT CATALOG NUMBER AND REPLACEMENT PART NUMBER*
PART
Part No.
104
Yoke
(Large Pin)
Yoke
(Small Pin)
Center
Bearing
Block
Large
Pin
Small
Pin
Self Locking
Assembly
Ring¶
Oiler
‡
01
02
03
04
05
06
07
Gear Catalog
*Example-Center Block for
J87-order J87-03
‡Used on size J100 and larger.
Will be furnished in Part 4
††Used on size J87 and larger
UNIVERSAL JOINTS
FORGED/CAST
STEEL
UJNS/UJNL SERIES
BOS-TRONG®
A BOS-trong® joint is composed of two yokes and a center kit. BOS-trong joints
may be purchased assembled, or as separate yokes and center kits. Individually
boxed.
AVAILABLE IN TWO SIZES
EQUIPPED WITH NEEDLE BEARINGS
PRECISION MACHINED FOR LONG, SMOOTH OPERATION
CONTINUOUS OR INTERMITTENT SERVICE
HIGH CAPACITY WITH MINIMUM SWING DIAMETER
BROAD RANGE OF HOLE DIAMETERS
AVAILABLE WITH ROUND, SQUARE OR HEXAGON HOLES
COMPLETE WITH KEYWAY AND SETSCREW
REPLACEABLE CENTER KITS
FITTING FOR LUBRICATION
SELECTION
Universal Joints are used in many different types of applications and under a wide variety of operating conditions. No convenient method can be presented for determining ratings for all possible circumstances.
Performance will be affected by vibration, shock loading, high temperature, dusty environment, etc.
The simplest solution to this problem is to provide approximate ratings of universal joints operating at various
angles and speeds under normal service conditions.
The suggested ratings are for general use in applications where two joints are arranged at equal angles with the
bearing pins of the intermediate yokes in line with each other.
Service torque ratings of the two sizes of BOS-trong® Needle Bearing universals are listed in tables. Ratings for
intermediate speeds and/or angles not shown may be found by interpolation.
LOAD DATA
APPROXIMATE TORQUE RATINGS (LB. INS.)
Speed
RPM
1800
1200
900
600
300
200
100
50
25
10
UJNS Series
Operating Angle*—Degrees (Deviation from Straight Line)
Up to
3°
5°
8°
12°
20°
30°
610
700
770
880
1110
1270
1600
2020
2540
3450
Non Operating Flex angle—90°
515
590
650
740
935
1070
1350
1700
2140
2900
440
505
555
635
800
915
1150
1450
1830
2480
—
435
480
545
690
790
995
1250
1580
2140
—
—
365
415
525
600
755
950
1200
1630
—
—
—
260
325
370
470
590
745
1010
UJNL Series
Operating Angle†—Degrees (Deviation from Straight Line)
Up to
3°
5°
8°
12°
20°
30°
845
965
1060
1210
1530
1750
2210
2780
3500
4760
710
815
895
1020
1290
1480
1860
2350
2960
4010
610
695
765
875
1100
1260
1590
2000
2530
3430
—
600
660
755
950
1090
1370
1730
2180
2960
—
—
500
575
725
825
1040
1310
1650
2250
—
—
—
355
450
515
645
815
1020
1390
*Maximum Angles (Momentary)—45°
†Maximum Angles (Momentary)—35°
Gear Catalog
105
UNIVERSAL JOINTS
FORGED/CAST
STEEL
UJNS/UJNL SERIES
BOS-TRONG®
All joints have round holes with standard keyways and 3/8–16 hex socket
setscrews.
ALL DIMENSIONS IN INCHES
Overall
Length
Bore
Hub-A
Hub-B
Hub Dia.
Hub-A
Hub-B
UJNS SERIES
SETSCREW
BORE
5
5/8
5
3/4
5
13/16
5
7/8
5
15/16
5
1
KEYWAY
HUB
DIA.
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
+.002 –.000
5
1-1/8
UJNL SERIES
REFERENCE PAGES
Mounting —151
Lubrication — 151
5-1/2
1
5-1/2
1-1/8
5-1/2
1-3/16
5-1/2
1-1/4
5-1/2
1-3/8
5-1/2
1-7/16
5-1/2
1-1/2
ORDERING INFORMATION
Joints can also be ordered in various combinations of round, square or hex holes. To
order the combination desired, specify
“UJNS” or “UJNL” and hole size and type as
listed in table of Yokes, Page 107. Use “S”
for square and “H” for hexagon.
106
Gear Catalog
5/8
3/4
13/16
7/8
15/16
1
1-1/8
3/4
13/16
7/8
15/16
1
1-1/8
13/16
7/8
15/16
1
1-1/8
7/8
15/16
1
1-1/8
15/16
1
1-1/8
1
1-1/8
1-1/8
1
1-1/8
1-3/16
1-1/4
1-3/8
1-7/16
1-1/2
1-1/8
1-3/16
1-1/4
1-3/8
1-7/16
1-1/2
1-3/16
1-1/4
1-3/8
1-7/16
1-1/2
1-1/4
1-3/8
1-7/16
1-1/2
1-3/8
1-7/16
1-1/2
1-7/16
1-1/2
1-1/2
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
2-1/4
2
2-1/4
2-1/4
2-1/4
2-1/4
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
2-1/4
1-5/8
1-5/8
1-5/8
1-5/8
1-5/8
2-1/4
1-5/8
1-5/8
1-5/8
1-5/8
2-1/4
1-5/8
1-5/8
1-5/8
2-1/4
1-5/8
1-5/8
2-1/4
1-5/8
2-1/4
2-1/4
2
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2
2-1/4
2-1/4
2-1/4
2-1/4
2
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
2-1/4
Approx.
Weight
(Lbs.)
Catalog
Number
Item
Code
SWING DIAMETER—2-1/2"
UJNS 10-10 17300
UJNS 10-12 17302
UJNS 10-13 17304
2
UJNS 10-14 17306
UJNS 10-15 17308
UJNS 10-16 17310
UJNS 10-18 17312
UJNS 12-12 17314
UJNS 12-13 17316
2
UJNS 12-14 17318
UJNS 12-15 17320
UJNS 12-16 17322
UJNS 12-18 17324
UJNS 13-13 17326
UJNS 13-14 17328
2
UJNS 13-15 17330
UJNS 13-16 17332
UJNS 13-18 17334
UJNS 14-14 17336
UJNS 14-15 17338
2
UJNS 14-16 17340
UJNS 14-18 17342
UJNS 15-15 17344
2
UJNS 15-16 17346
UJNS 15-18 17348
UJNS 16-16 17350
2
UJNS 16-18 17352
3
UJNS 18-18 17498
SWING DIAMETER—2-3/4"
UJNL 16-16 17354
UJNL 16-18 17356
UJNL 16-19 17358
3-3/4
UJNL 16-20 17360
UJNL 16-22 17362
UJNL 16-23 17364
UJNL 16-24 17366
UJNL 18-18 17368
UJNL 18-19 17370
UJNL
18-20 17372
3-3/4
UJNL 18-22 17374
UJNL 18-23 17376
UJNL 18-24 17378
UJNL 19-19 17380
UJNL 19-20 17382
3-1/4
UJNL 19-22 17384
UJNL 19-23 17386
UJNL 19-24 17388
UJNL 20-20 17390
UJNL 20-22 17392
3-1/4
UJNL 20-23 17394
UJNL 20-24 17396
UJNL 22-22 17398
3-1/4
UJNL 22-23 17400
UJNL 22-24 17402
UJNL 23-23 17404
3-1/4
UJNL 23-24 17406
3-1/4
UJNL 24-24 17408
UNIVERSAL JOINTS
FORGED/CAST
STEEL
UJS/UJL SERIES
YOKES
These yokes are for assembly with UJSC Center Kits.
All yokes are furnished with 3/8–16 hex socket setscrew.
UJS14H is 1/8 NPT straight.
STANDARD TOLERANCES
DIMENSION
Round
Bore
Square
Hexagon
TOLERANCE
+.000 – +.002
3/4 –13/16 –0 – +.002
7/8 –1-1/2 +.001 +.003
+.002 +.004
KEYWAY
*180° FROM
AS SHOWN
+180° FROM
KEYWAY
HUB
BORE DIA.
DIM.
ACROSS
FLATS
A
ALL DIMENSIONS IN INCHES
A
Bore
Hub
Dia.
Round Bores
Approx.
Weight Catalog
Keyway (Lbs.) Number
Item
Code
Square Bores
Dimension
Approx.
Across
Hub Weight Catalog
Item
Flats
Dia. (Lbs.) Number
Code
Hexagon Bores
Catalog
Number
Item
Code
UJS SERIES
.625
.750
.813
2-1/2
.875
.938
1.000
1.125
UJL SERIES
1.000
1.125
1.1875
2-3/4
1.250
1.375
1.4375
1.500
1.63
1.63 3/16 x 3/32
1.63
3/4
1.63
1.63
1.63 1/4 x 1/8
2.25
1-1/4
UJS 10
UJS 12
UJS 13
UJS 14
UJS 15
UJS 16
UJS 18
2.00
1-1/2
2.25 1/4 x 1/8
2.25
2.25
2.25 5/16 x 5/32 1-1/4
2.25 3/8 x 3/16
2.25
UJL 16
UJL 18
UJL 19
UJL 20
UJL 22
UJL 23
UJL 24**
17410
.750
17412
.813
17414
.875 x 1
17416
.938 x 1
17418 1.000 x .875
17420
1.126
17422
1.63
1.63
2.25
2.25
2.25
2.25
17424
17426
17428
17430
17432
17434
17436
2.25
1.000
1.126
3/4
1-1/4
1-1/2
UJS 12S
UJS 13S
UJS 14S
UJS 15S
UJS 16S
UJS 18S
17438
17440
17442
17444
17446
17448
—
—
UJS 14H†*
—
—
UJS 18H**
—
—
17454
—
—
17456
UJL 16S
UJL 18S
17450
17452
—
UJL 18H**
—
17458
†Hub Dia. 1-5/8", furnished with 1/8 NPT instead of 3/8-16 setscrew.
‡Hub Dia. 1-7/8"
UJL 18 thru UJL 23 Setscrew. 180° from shown
*.880/.885 Across flats.
**(2) S.S. @ 90°
CENTER KITS
DOUBLE YOKES
ALL DIMENSIONS IN INCHES
A
B
UJS Series
1-61/64 35/64
UJL Series
2-5/16
.644
C
Center Kits*
Approx.
Weight
D
(Lbs.)
Catalog
Number
Item
Code
19/32
31/32
1/2
UJSC
17464
5/8
1-1/16
3/4
UJLC
17466
J
Maximum
Operating
Angle
Double Yokes
Approx.
Weight
Catalog
(Lbs.)
Number
UJS Series Forged
2-1/2
15°
1
UJSD
UJL Series Forged – 2 piece Welded Construction
4-7/16
35°
2-1/4
UJLD
Item
Code
17460
17462
*Center Kits include 1 cross, 4 bearings, 4 cork washers and 4 lock rings.
Gear Catalog
107
UNIVERSAL JOINTS
MOLDED TYPE
JP SERIES
SINGLE AND DOUBLE
MOLDED DELRIN BODY provides vibration dampening and electrical
insulation.
MAX. ANGULAR DISPLACEMENT—Single 45°, Double 90°
MAX. AMBIENT TEMPERATURE—180°F
COMPLETE WITH SETSCREWS
SINGLE
BORE
(2) SETSCREWS
EACH END (SEE NOTE)
INSERT
C
STANDARD TOLERANCES
DIMENSION
BORE
BRASS
SPIDER
TOLERANCE
All
O.D.
L
+.001 –.000
DOUBLE
REFERENCE PAGES
Mounting—151
(2) SETSCREWS
EACH END
BORE
MATERIALS
Delrin Body
Nickel Plated Brass Spider and Insert
C
F
O.D.
BRASS
SPIDER
L
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
Bore
Depth
(Typical)
1/8
1/8
3/16
3/16
1/4
1/4
5/16
3/8
L
O.D.
C
Single
Double
DOUBLE ONLY
Max.
Parallel
F
Offset
Setscrew
.39
1/4
.27
1-3/64
1-23/64
5/16
.22
#4-40
.52
3/8
.41
1-31/64
2
17/32
.36
#4-40
.63
1/2
.54
1-13/16
2-7/16
5/8
.43
#6-32
.86
5/8
.68
2-41/64
3-33/64
7/8
.61
#8-32
*One setscrew each end.
LOAD DATA
Basic
Size
25
37
50
62
Maximum Torque†
(Lb. Ins.)
Single
Double
5
16
26
60
2.5
7
12
47
†This is the ultimate or breaking torque for static, zero angle conditions. Actual
operating conditions will dictate use of significantly lower values.
108
Gear Catalog
SINGLE
Catalog
Item
Number
Code
JP25-1/8*
JP37-1/8*
JP37-3/16
JP50-3/16
JP50-1/4
JP62-1/4
JP62-5/16
JP62-3/8
54194
54195
54196
54197
54198
54199
54200
54201
DOUBLE
Catalog
Item
Number
Code
JPD25-1/8
JPD37-1/8
JPD37-3/16
JPD50-3/16
JPD50-1/4
JPD62-1/4
JPD62-5/16
JPD62-3/8
54202
54203
54204
54205
54206
54207
54208
54209
UNIVERSAL JOINTS
MOLDED TYPE
JPE SERIES
WITH SLIDE EXTENSION
MOLDED DELRIN BODY provides vibration dampening and electrical
insulation.
MAX. ANGULAR DISPLACEMENT—90°
MAX. AMBIENT TEMPERATURE—180°F
MAX. EXTENSION—3/4"
COMPLETE WITH SETSCREWS
STANDARD TOLERANCES
DIMENSION
(2) SETSCREWS
EACH END
(SEE NOTE)
BORE
BRASS
SPIDERS
B
C IN CLOSED POSITION
All
TOLERANCE
+.001 –.000
REFERENCE PAGES
BORE
Mounting —151
D
MATERIALS
A
Delrin Body
Nickel Plated Brass Spider and Insert
G
H
F
O.D.
J
K IN CLOSED POSITION
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
1/8
3/16
3/16
1/4
Bore
Depth
(Typical) O.D.
A
B
C
D
E
F
G
(Sq.)
H
J
K
Setscrew
.52
3/8
.41
.74
2-59/64
1-1/8
—
1-47/64 3/16
23/64 2-43/64 4-13/32
#4-40
.63
1/2
.54
.91
2-23/64
1-1/8
3/8
1-34/64 3/16
23/64 2-9/16
#6-32
4-11/64
Catalog
Number
Item
Code
JPE37-1/8
JPE37-3/16
JPE50-3/16
JPE50-1/4
54210
54211
54212
54213
LOAD DATA
Basic
Size
JPE37
JPE50
Maximum Recommended
Torque (Lb. Ins.)*
Closed
Open
8
14
5
10
*This is the ultimate or breaking torque for static zero angle conditions.
Actual operating conditions will dictate use of significantly lower values.
Gear Catalog
109
SHAFT COLLARS
SECTION CONTENTS
SETSCREW COLLARS
STEEL & STAINLESS STEEL.........................................................................................................111
NONMETALLIC WASHDOWN DUTY .............................................................................................112
CLAMPING COLLARS
THREADED — STEEL & STAINLESS STEEL...............................................................................113
1 PIECE — STEEL, STAINLESS STEEL & ALUMINUM ...............................................................114
2 PIECE — STEEL & STAINLESS STEEL .....................................................................................115
2 PIECE — NONMETALLIC WASHDOWN DUTY..........................................................................116
110
Gear Catalog
SETSCREW COLLARS
STEEL AND STAINLESS STEEL
SC/SSC SERIES
STEEL BORE SIZES FROM 1/8" TO 3"
STAINLESS STEEL BORE SIZES FROM 1/8" TO 2"
STAINLESS STEEL COLLARS ARE CORROSION-RESISTANT AND
NON-MAGNETIC suitable for temperatures up to 800°F. Ideal for applications requiring hygienic cleanliness.
ALL COLLARS COMPLETE WITH STANDARD HOLLOW POINT
SETSCREWS.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
SETSCREWS
BORE
OUTSIDE
DIA.
WIDTH
STANDARD TOLERANCES
DIMENSION
BORE
1/8-1
1-1/16-3
TOLERANCE
+.001 +.003
+.001 +.004
MATERIAL
Stainless Steel—Type 303 Austenitic
Steel—Low Carbon, Zinc Plated Finish
-1/8
-3/16
-1/4
-5/16
-3/8
-7/16
-1/2
-9/16
-5/8
-11/16
-3/4
-13/16
-7/8
-15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-9/16
1-5/8
1-11/16
1-3/4
1-13/16
1-7/8
1-15/16
2
2-1/8
2-3/16
2-1/4
2-5/16
2-3/8
2-7/16
2-1/2
2-9/16
2-11/16
2-3/4
2-15/16
3
Outside
Dia.
Width
.36
.42
.48
.61
.73
7/8
.25
.25
5/16
5/16
3/8
7/16
.98
.44
1.11
.50
1.23
.56
1-1/4
1.48
9/16
.56
.56
.62
1.50
1.73
.62
1.98
.69
2-1/8
11/16
3/4
2.23
.75
2-1/2
13/16
2.72
2-3/4
2-3/4
.88
2.98
.88
3-1/4
15/16
3-1/2
1
3-3/4
1
4
1-1/8
4-1/4
1-1/8
Alloy Steel
Catalog
Item
Number
Code
SC12
SC18
SC25
SC31
SC37
SC43
SC50
SC56
SC62
SC68
SC75
SC81
SC87
SC93
SC100
SC106
SC112
SC118
SC125
SC131
SC137
SC143
SC150
SC156
SC162
SC168
SC175
SC181
SC187
SC193
SC200
SC212
SC218
SC225
SC231
SC237
SC243
SC250
SC256
SC268
SC275
SC293
SC300
67697
67698
67699
67700
67701
67702
67703
67704
67705
67706
67707
67708
67709
67710
67711
67712
67713
67714
67715
67716
67717
67718
67719
67720
67721
67722
67723
67724
67725
67726
67727
67728
67729
67730
67731
67732
67733
67734
67735
67736
67737
67738
67739
Gear Catalog
Stainless Steel
Catalog
Item
Number
Code
SSC12
SSC18
SSC25
SSC31
SSC37
—
SSC50
—
SSC62
—
SSC75
—
SSC87
—
SSC100
—
SSC112
—
SSC125
—
—
—
SSC150
—
—
—
SSC175
—
—
—
SSC200
—
—
—
—
—
—
—
—
—
—
—
—
67740
67741
67742
67743
67744
—
67745
—
67746
—
67747
—
67748
—
67749
—
67784
—
67785
—
—
—
67788
—
—
—
67789
—
—
—
67790
—
—
—
—
—
—
—
—
—
—
—
—
111
SETSCREW COLLARS
NONMETALLIC WASHDOWN DUTY
NSC SERIES
BORE SIZES FROM 1/4" TO 3"
USDA/FDA APPROVED
STAINLESS STEEL HARDWARE
CORROSION RESISTANT
MOISTURE RESISTANT
SELF LUBRICATING
INTERCHANGEABLE WITH THEIR METAL
COUNTERPARTS
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
SET-SCREW
SIZE
OD
BORE
WIDTH
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
1/4 – 1
1-3/16 – 2
2-3/16 – 3
+.003 – .000
+.004 – .000
+.006 – .000
MATERIAL
Nylon
112
Gear Catalog
Bore
Outside
Dia.
Width
Set Screw
Thread
Catalog
Number
Item
Code
-1/4
-5/16
-3/8
-7/16
-1/2
-9/16
-5/8
-3/4
-7/8
11-3/16
1-1/4
1-3/8
1-7/16
1-1/2
1-5/8
1-3/4
1-7/8
1-15/16
2
2-3/16
2-1/4
2-7/16
2-1/2
2-3/4
3-
-3/4
-7/8
-7/8
-7/8
1
1-1/8
1-1/8
1-1/4
1-1/2
1-5/8
2
2
2-1/8
2-1/4
2-1/4
2-1/2
2-3/4
2-3/4
3
3
3-1/4
3-1/4
3-1/2
3-1/2
3-3/4
4-1/4
7/16
7/16
7/16
7/16
7/16
1/2
1/2
9/16
9/16
5/8
11/16
11/16
3/4
3/4
3/4
13/16
7/8
7/8
7/8
7/8
15/16
15/16
1
1
1
1-1/8
10-24
10-24
10-24
1/4-20
1/4-20
1/4-20
5/16-18
5/16-18
5/16-18
5/16-18
3/8-16
3/8-16
3/8-16
3/8-16
3/8-16
3/8-16
1/2-13
1/2-13
1/2-13
1/2-13
1/2-13
1/2-13
1/2-13
1/2-13
1/2-13
1/2-13
NSC25
NSC31
NSC37
NSC43
NSC50
NSC56
NSC62
NSC75
NSC87
NSC100
NSC118
NSC125
NSC137
NSC143
NSC150
NSC162
NSC175
NSC187
NSC193
NSC200
NSC218
NSC225
NSC243
NSC250
NSC275
NSC300
38802
38803
38804
38805
38806
–
38807
38808
38809
38810
–
38811
–
38812
38813
–
38814
–
–
38815
–
–
–
–
–
–
CLAMPING COLLARS
THREADED TYPE
STEEL AND STAINLESS STEEL
CSC/CSSC SERIES
DESIGN PROVIDES CONVENIENT SETTING, ADJUSTING AND
REMOVAL - prevents shaft damage.
OSHA CONFORMANCE - collars have completely recessed screw
head.
BORE THREADS FROM 10-32 TO 1 1/4-12
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
OUTSIDE
DIA.
WIDTH
BORE
CLAMP SCREW
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
All
+.003 –.000
Bore
Thread
Outside
Clamp
Dia. Width Screws
10-32
1/4-20
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
1/2-13
1/2-20
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
7/8-14
1-8
1-14
1-1/8-7
1-1/8-12
1-1/4-7
1-1/4-12
11/16
1/4
4-40
13/16
1/4
4-40
1-1/16
5/16
6-32
1-1/4
3/8
8-32
1-1/2
13/32
10-32
1-3/4
1/2
1/4-28
1-7/8
1/2
1/4-28
2
1/2
1/4-28
2-1/8
1/2
1/4-28
2-1/4
1/2
1/4-28
Steel
Catalog
Item
Number
Code
CSC10-32
CSC25-20
CSC25-28
CSC31-18
CSC31-24
CSC37-16
CSC37-24
CSC50-13
CSC50-20
CSC62-11
CSC62-18
CSC75-10
CSC75-16
CSC87-9
CSC87-14
CSC100-8
CSC100-14
CSC112-7
CSC112-12
CSC125-7
CSC125-12
49237
49238
49239
49240
49241
49242
49243
49244
49245
49246
49247
49248
49249
49250
49251
49252
49253
49254
49255
49256
49257
Stainless Steel
Catalog
Item
Number
Code
—
CSSC25-20
—
—
—
CSSC37-16
CSSC37-24
CSSC50-13
CSSC50-20
CSSC62-11
CSSC62-18
CSSC75-10
CSSC75-16
—
—
CSSC100-8
CSSC100-14
—
—
—
CSSC125-12
—
49265
—
—
—
49269
49270
49271
49272
49273
49274
49275
49276
—
—
49279
49280
—
—
—
49284
MATERIAL
Steel—Low Carbon, Black Oxide Finish
Stainless—Type 303 Austenitic
Gear Catalog
113
CLAMPING COLLARS
1-PIECE TYPE
STEEL, STAINLESS STEEL AND ALUMINUM
CSC/CSSC/CASC SERIES
DESIGN PROVIDES CONVENIENT SETTING, ADJUSTING AND
REMOVAL prevents shaft damage.
OSHA CONFORMANCE collars have completely recessed screw head.
BORE SIZES FROM 1/8" TO 3"
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
OUTSIDE
DIA.
WIDTH
BORE
CLAMP SCREW
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
All
+.003 –.000
MATERIAL
Steel—Low Carbon, Black Oxide FInish
Stainless—Type 303 Austenitic
Aluminum—2024
LOAD DATA
Capacity is based on a standard steel,
one-piece collar mounted with recommended screw torque on a lightly oiled
shaft. Capacity is load to move collar
.010". Data shown is for guidance only.
In applications involving control of axial
loads, capacity should be determined
experimentally on actual parts involved.
Bore
1/8 – 5/16
3/8 – 7/16
1/2 – 9/16
5/8–11/16
3/4–1-9/16
1-5/8–2-3/8
2-7/16 – 3
114
Recommended
Screw
Axial
Torque
Load
(Lb. Ins.)
Capacity Screw
Stainless
(Lbs.)
Size Steel Steel
400
600
1400
1800
4000
6500
8500
4-40
20
6-32
30
8-32
55
10-32
90
1/4-28 220
5/16-24 435
3/8-24 710
Gear Catalog
16
24
35
72
170
340
550
1/8
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-9/16
1-5/8
1-11/16
1-3/4
1-7/8
1-15/16
2
2-3/16
2-1/4
2-3/8
2-7/16
2-1/2
2-5/8
2-11/16
2-3/4
2-7/8
2-15/16
3
Outside
Dia. Width
Clamp
Screws
13/16
1/4
4-40
1-1/16
5/16
6-32
1-1/4
3/8
8-32
1-1/2
13/32
10-32
1/2
1/4-28
5/8
5/16-24
3/4
3/8-24
1-3/4
1-7/8
2
2-1/8
2-1/4
2 3/8
2-1/2
3
3-1/4
3-1/2
4
4-1/4
4-1/2
Steel
Catalog Item
Number Code
CSC12
CSC18
CSC25
CSC31
CSC37
CSC43
CSC50
CSC56
CSC62
CSC68
CSC75
CSC81
CSC87
CSC93
CSC100
CSC106
CSC112
CSC118
CSC125
CSC131
CSC137
CSC143
CSC150
CSC156
CSC162
CSC168
CSC175
CSC187
CSC193
CSC200
CSC218
CSC225
CSC237
CSC243
CSC250
CSC262
CSC268
CSC275
CSC287
CSC293
CSC300
49000
49001
49002
49003
49004
49005
49006
49007
49008
49009
49010
49011
49012
49013
49014
49015
49016
49017
49018
49019
49020
49021
49022
49023
49024
49025
49026
49028
49029
49030
49033
49034
49036
49037
49038
49040
49041
49042
49044
49045
49046
Stainless Steel
Catalog
Item
Number Code
CSSC12
CSSC18
CSSC25
CSSC31
CSSC37
CSSC43
CSSC50
CSSC56
CSSC62
—
CSSC75
—
CSSC87
CSSC93
CSSC100
CSSC106
CSSC112
CSSC118
CSSC125
CSSC131
—
CSSC143
CSSC150
—
—
—
—
—
CSSC193
CSSC200
—
—
—
—
—
—
—
—
—
—
—
49094
49095
49096
49097
49098
49099
49100
49101
49102
—
49104
—
49106
49107
49108
49109
49110
49111
49112
49113
—
49115
49116
—
—
—
—
—
49123
49124
—
—
—
—
—
—
—
—
—
—
—
Aluminum
Catalog Item
Number Code
—
CASC18
CASC25
CASC31
CASC37
—
CASC50
CASC56
CASC62
—
CASC75
—
CASC87
—
CASC100
—
—
—
CASC125
—
—
—
CASC150
—
—
—
CASC175
—
—
CASC200
—
—
—
—
—
—
—
—
—
—
—
—
49048
49049
49050
49051
—
49053
49054
49055
—
49057
—
49059
—
49061
—
—
—
49065
—
—
—
49069
—
—
—
49073
—
—
49077
—
—
—
—
—
—
—
—
—
—
—
CLAMPING COLLARS
2-PIECE TYPE
STEEL AND STAINLESS STEEL
2SC/2SSC SERIES
DESIGN PROVIDES CONVENIENT SETTING, ADJUSTING AND
REMOVAL prevents shaft damage.
OSHA CONFORMANCE collars have completely recessed screw head.
BORE SIZES FROM 1/8" TO 3"
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
OUTSIDE
DIA.
WIDTH
BORE
CLAMP SCREWS
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
+.003 –.000
MATERIAL
Steel—Low Carbon, Black Oxide Finish
Stainless—Type 303 Austenitic
LOAD DATA
Capacity is based on a standard steel, onepiece collar mounted with recommended
screw torque on a lightly oiled shaft.
Capacity is load to move collar .010”. Data
shown is for guidance only. In applications
involving control of axial loads, capacity
should be determined experimentally on
actual parts involved.
Bore
1/8 – 5/16
3/8 – 7/16
1/2 – 9/16
5/8 – 11/16
3/4 – 1-9/16
1-5/8 – 2-3/8
2-7/16 – 3
Recommended
Screw
Axial
Torque
Load
(Lb. Ins.)
Capacity Screw
Stainless
(Lbs.)
Size Steel Steel
400
600
1400
1800
4000
6500
8500
4-40
20
6-32
30
8-32
55
10-32
90
1/4-28 220
5/16-24 435
3/8-24 710
1/8
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-7/16
1-1/2
1-9/16
1-5/8
1-11/16
1-3/4
1-7/8
1-15/16
2
2-1/8
2-3/16
2-1/4
2-3/8
2-7/16
2-1/2
2-5/8
2-11/16
2-3/4
2-7/8
2-15/16
3
Outside
Clamp
Dia.
Width Screws
13/16
1/4
4-40
1-1/16
5/16
6-32
1-1/4
3/8
8-32
1-1/2
13/32
10-32
1/2
1/4-28
5/8
5/16-24
3/4
3/8-24
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
3
3-1/4
3-1/2
4
4-1/4
4-1/2
Steel
Catalog
Item
Number
Code
Stainless Steel
Catalog
Item
Number
Code
2SC12
2SC18
2SC25
2SC31
2SC37
2SC43
2SC50
2SC56
2SC62
2SC68
2SC75
2SC81
2SC87
2SC93
2SC100
2SS106
2SC112
2SC118
2SC125
2SC131
2SC137
2SC143
2SC150
2SC156
2SC162
2SC168
2SC175
2SC187
2SC193
2SC200
2SC212
2SC218
2SC225
2SC237
2SC243
2SC250
2SC262
2SC268
2SC275
2SC287
2SC293
2SC300
—
—
2SSC25
2SSC31
2SSC37
2SSC43
2SSC50
2SSC56
2SSC62
2SSC68
2SSC75
—
2SSC87
—
2SSC100
2SSC106
2SSC112
—
2SSC125
2SSC131
—
2SSC143
2SSC150
—
—
—
—
2SSC187
2SSC193
2SSC200
—
—
—
—
—
—
—
—
—
—
—
—
49141
49142
49143
49144
49145
49146
49147
49148
49149
49150
49151
49152
49153
49154
49155
49156
49157
49158
49159
49160
49161
49162
49163
49164
49165
49166
49167
49169
49170
49171
49173
49174
49175
49177
49178
49179
49181
49182
49183
49185
49186
49187
—
—
49190
49191
49192
49193
49194
49195
49196
49197
49198
—
49200
—
49202
49203
49204
—
49206
49207
—
49209
49210
—
—
—
—
49216
49217
49218
—
—
—
—
—
—
—
—
—
—
—
—
16
24
35
72
170
340
550
Gear Catalog
115
CLAMPING COLLARS
2 PIECE TYPE
NONMETALLIC WASHDOWN DUTY
2 NSC SERIES
BORE SIZES FROM 1/4" TO 3"
USDA/FDA APPROVED
STAINLESS STEEL HARDWARE
CORROSION RESISTANT
MOISTURE RESISTANT
SELF LUBRICATING
INTERCHANGEABLE WITH THEIR METAL
COUNTERPARTS
RECESSED CLAMPING SCREWS FOR SAFETY
OD
BORE
CLAMP
SCREWS
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
1/4 – 1
1-3/16 – 2
2-3/16 – 3
+.003 – .000
+.004 – .000
+.006 – .000
MATERIAL
Nylon
116
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
WIDTH
Gear Catalog
Bore
Outside
Dia.
Width
Clamp Screw
Thread
Catalog
Number
Item
Code
-1/4
-5/16
-3/8
-7/16
-1/2
-9/16
-5/8
-3/4
-7/8
11-3/16
1-1/4
1-3/8
1-7/16
1-1/2
1-5/8
1-3/4
1-7/8
1-15/16
2
2-3/16
2-1/4
2-7/16
2-1/2
2-3/4
3
1
1
1-1/4
1-1/4
1-3/8
1-3/8
1-5/8
1-3/4
2
2-1/8
2-5/16
2-3/8
2-1/2
2-5/8
2-5/8
3
3-1/8
3-1/4
3-1/4
3-3/8
3-5/8
3-5/8
4-1/8
4-1/8
4-3/8
4-1/2
3/8
3/8
1/2
1/2
9/16
9/16
5/8
5/8
3/4
3/4
3/4
3/4
3/4
3/4
3/4
15/16
15/16
15/16
15/16
15/16
15/16
15/16
1-1/8
1-1/8
1-1/8
1-1/8
6-32
6-32
6-32
6-32
8-32
8-32
10-32
10-32
10-32
1/4-20
1/4-20
1/4-20
1/4-20
1/4-20
1/4-20
5/16-18
5/16-18
5/16-18
5/16-18
5/16-18
5/16-18
5/16-18
3/8-16
3/8-16
3/8-16
3/8-16
2NSC25
2NSC31
2NSC37
2NSC43
2NSC50
2NSC56
2NSC62
2NSC75
2NSC87
2NSC100
2NSC118
2NSC125
2NSC137
2NSC143
2NSC150
2NSC162
2NSC175
2NSC187
2NSC193
2NSC200
2NSC218
2NSC225
2NSC243
2NSC250
2NSC275
2NSC300
38788
38789
38790
38791
38792
–
38793
38794
38795
38796
–
38797
–
38798
38799
–
38800
–
–
38801
–
–
–
–
–
–
WASHERS & BUSHINGS
SECTION CONTENTS
THRUST WASHERS
STEEL & STAINLESS STEEL.........................................................................................................118
BUSHINGS
SOFT STEEL....................................................................................................................................119
Gear Catalog
117
THRUST WASHERS
STEEL AND STAINLESS STEEL
HARDENED AND GROUND
STEEL BORE SIZES FROM 3/16" TO 2"
STAINLESS STEEL BORE SIZES FROM 3/16" TO 1/2"
STANDARD TOLERANCES
DIMENSION
BORE
O.D.
Thickness
TOLERANCE
06700 Series
18000 Series
06700 Series
18000 Series
All
+.0015 – .007
+.002 +.010
+.000 – .005
±.030
+.000 – .005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
HARDENED STEEL
Bore
3/16
Outside Diameter
Thickness
Catalog No.
9/32
1/16
3/32
1/16
3/32
1/16
1/16
3/32
1/16
5/64
1/16
1/8
1/16
1/8
3/32
1/16
5/32
1/16
1/8
1/8
1/16
5/32
3/16
3/32
3/16
1/16
1/8
3/32
3/16
3/16
3/32
3/16
3/16
3/32
3/32
3/16
1/8
3/16
3/16
3/16
18800
18802
18804
18806
06724*
18808
18810
06726*
06728*
18812
18814
18816
18818
06730*
18820
18822
18824
18826
06734*
18828
18830
18832
18834
18836
18838
18840
18842
18844
18846
18848
18850
18852
18854
18856
18858
18860
18862
18864
18866
3/8
7/16
1/4
1/2
9/16
5/16
3/8
5/8
5/8
11/16
7/16
7/8
1/2
7/8
3/4
1-1/8
1-1/4
9/16
1-3/8
25/32
1-1/4
5/8
1-3/8
1-1/2
1-3/4
1
1-5/16
3/4
1-5/8
1-3/4
2
118
HARDENED STEEL
Gear Catalog
Bore
7/8
7/16
1
1-1/16
1-1/8
1-3/16
1-1/4
1-5/16
1-3/8
1-1/2
2
Outside Diameter
Thickness
1-3/16
2
2
2-1/4
13/16
3/32
1/8
3/16
3/16
3/32
1/8
1-9/16
3/16
1/8
2
3/16
9/64
2-1/4
3/16
2-1/2
1/4
2-1/2
1/4
2-1/2
1/4
2
3/16
9/64
2
3/16
9/64
2-7/16
1/4
2-3/4
9/64
3
1/4
2-3/4
1/4
5/32
3
1/4
5/32
3
1/4
3-1/4
1/8
5/32
4
5/16
STAINLESS STEEL†
Catalog No.
18868
18870
18872
18874
06732*
18876
18878
18880
18882
18884
18886
18888
18890
18894
18896
18898
18922
18900
18924
18902
18904
18906
18908
18910
18912
18914
18916
18918
18920
Bore
Outside Diameter
Thickness
Catalog No.
3/16
1/4
5/16
3/8
1/2
7/16
9/16
5/8
11/16
7/8
1/16
1/16
5/64
3/32
1/8
06760
06762
06764
06766
06770
*These Washers also listed with AO Bearings.
†These Washers also listed with SAO Bearings.
BUSHINGS
SOFT STEEL
BORE SIZES FROM 3/16" TO 1-1/4"
MULTI-PURPOSE BUSHINGS suitable for use as hole reducers,
spacers, standoffs or slip bushings.
ADAPTABLE FOR OTHER USES including wear sleeves, liners or
cutting arbor studs.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Bore
3/16
BORE
1/4
Outside Diameter
1/4
5/16
3/8
5/16
3/8
1/2
3/8
5/16
1/2
1/2
OUTSIDE
DIA.
LENGTH
3/8
5/8
7/16
5/8
5/8
1/2
3/4
5/8
3/4
STANDARD TOLERANCES
DIMENSION
BORE
O.D.
LENGTH
All
Up to 1-1/4
Over 1-1/4
Up to 1”
Over 1”
TOLERANCE
±.0005
+.0005 +.0015
+.001 +.002
+.000 –.007
+.000–.010
7/8
1
1-1/8
1-1/4
3/4
7/8
7/8
1
1-3/8
1-1/2
1
1-1/4
1-3/8
2
1-1/4
1-3/8
1-1/2
2
Length
5/8
5/8
3/4
1
5/8
3/4
1
3/4
1
3/4
1-1/4
3/4
1-1/4
3/4
1
1-1/4
3/4
1
3/4
1
1-1/4
1-1/4
1-1/2
2
1-1/2
1-1/2
2
2
2
1-1/2
2
Gear Catalog
Catalog No.
18510
18512
18516
18514
18518
18522
18524
18520
18526
18528
18530
18532
18534
18536
18538
18540
18542
18544
18546
18554
18556
18560
18562
18566
18568
18574
18626
18606
18576
18596
18602
18622
18598
18604
18614
18624
119
GROOVED PULLEYS
ROUND BELT TYPE
G1200
BRASS AND IRON
BORE SIZES FROM 3/16" TO 3/4"
COMPLETE WITH STANDARD SETSCREWS
FACE
WIDTH
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
SETSCREW
Bore
OUTSIDE
DIA.
BORE
HUB
DIA.
3/16
1/4
HUB
PROJ.
5/16
1/2
STANDARD TOLERANCES
DIMENSION
BORE
All
5/8
TOLERANCE
+.001 –.000
3/4
Outside
Dia.
Hub
Dia.
Proj.
V
Groove
Style
BRASS—3/16" ROUND BELT (or smaller)—1/4" FACE
1/2
1/2
74°
G1214
1/4
Plain
7/8
5/8
46°
G1215
1
G1216
5/8
5/16
46°
Plain
1-1/2
G1217
2
5/8
Webbed
G1218
3
3/4
5/16
46°
Spoked
G1219
4
3/4
Spoked
G1220
IRON†—3/8" ROUND BELTS (or smaller)—1/2" FACE
1
15/16
G1202*
1-1/2
1
Plain
G1203*
1/2
2
1
G1204*
3
1-1/4
G1205
53°
4
Webbed
G1206
1-5/8
3/4
5
G1207
6
G1208
1-3/4
1
Spoked
8
G1209
*These pulleys are steel
†Outside diameter, sides, grooves, hole and ends of hub, finished.
120
Gear Catalog
Catalog
Number
Item
Code
18700
18702
18704
18706
18708
18710
18712
18718
18720
18722
18724
18726
18728
18730
18732
MINIATURE TIMING BELTS & PULLEYS
SECTION CONTENTS
MINIATURE TIMING BELT & PULLEY SELECTION....................................................................122 – 124
MINIATURE TIMING BELTS, 6 & 9mm WIDTHS....................................................................................125
TIMING BELT PULLEYS, FOR 6 & 9mm WIDE BELTS...............................................................126 – 130
MINIATURE TIMING BELTS, 9 & 15mm WIDTHS..................................................................................131
TIMING BELT PULLEYS, FOR 9 & 15mm WIDE BELTS ............................................................132 – 135
Gear Catalog
121
MINIATURE TIMING BELTS & PULLEYS
MINIATURE HTD® TIMING BELT DRIVES
BASIC CONSTRUCTION
Timing belts are essentially flat belts with the addition of evenly spaced teeth along the surface that contacts toothed pulleys. Power is transmitted smoothly and without slippage.
Pulley pitch diameters are larger than their outside diameters
and the belt pitch lines lie within the flat portion. Tension members are molded in the flat portion to serve as load-carrying
elements. Miniature HTD timing belts have deep curvilinear
tooth forms, as contrasted to trapezoidal for conventional timing belts. Greater strength, lower tooth pressures and
decreased stress concentration result in superior performance.
SELECTION
The following general guidelines apply to selection of miniature HTD timing belts and pulleys:
Horsepower Rating Tables provide ratings for operation no
more than ten hours per day under uniform loading. Selection
procedure is as follows:
1. Select Service Factor from chart below.
2. Determine Design Horsepower.
Design Horsepower = Application Horsepower x Service Factor.
3. Select small pulley and belt size from the rating tables,
choosing a combination whose rating does not exceed
the Design Horsepower.
4. For speed increasing applications an additional
amount must be added to the Service Factor.
5. For speeds, higher than shown in rating Tables, consult factory.
Design with ample reserve horsepower capacity and
apply the proper service factors.
The belt must have six or more teeth in engagement with
the smaller pulley to carry rated Horsepower.
Avoid small pulley diameters where practical to assure
satisfactory belt life.
Belt speed should not exceed 6500 feet per minute.
At least one pulley in the drive should be flanged.
For vertical shafts or where center distance exceeds eight
times the smaller pulley diameter, both pulleys should be
flanged.
SERVICE FACTORS
Load Classification
Service Factor
Uniform to 10 hrs./day
Uniform over 10 hrs./day
Moderate Shock to 10 hrs./day
Moderate Shock over 10 hrs./day
Heavy Shock to 10 hrs./day
1.0
1.5
2.0
SPEED-UP DRIVES
Ratio Range
1 through 1.24
1.25 through 1.74
1.75 through 2.49
2.50 through 3.49
3.50 and over
Registered trademark of Uniroyal, Inc.
®
122
Gear Catalog
Additional Factor
0
0.1
0.2
0.3
0.4
MINIATURE TIMING BELTS & PULLEYS
MINIATURE HTD TIMING BELT DRIVES (Continued)
HORSEPOWER RATINGS
3mm PITCH—6mm WIDE BELT
RPM of Small Pulley
NUMBER OF GROOVES ON THE SMALL PULLEY
PD
100
300
500
700
1160
1500
1750
2500
3500
10
11
12
14
15
16
18
20
22
24
25
28
30
32
.376
.005
.016
.022
.031
.040
.052
.061
.067
.094
.414
.005
.017
.024
.035
.045
.058
.068
.074
.103
.451
.006
.018
.027
.037
.050
.064
.075
.080
.113
.526
.007
.021
.030
.042
.056
.072
.085
.091
.127
.564
.008
.023
.032
.046
.061
.078
.091
.101
.141
.602
.009
.025
.035
.049
.066
.085
.099
.107
.151
.677
.010
.029
.039
.054
.072
.093
.108
.117
.165
.752
.011
.033
.043
.061
.078
.101
.117
.134
.188
.827
.012
.037
.048
.068
.089
.115
.134
.148
.207
.902
.013
.040
.053
.075
.097
.125
.146
.161
.226
.940
.013
.041
.055
.078
.101
.130
.152
.168
.236
1.053
.016
.048
.062
.087
.113
.145
.170
.192
.268
1.128
.019
.055
.066
.092
.120
.155
.182
.200
.278
1.203
.020
.059
.070
.098
.127
.165
.194
.213
.296
3mm PITCH—9mm WIDE BELT
RPM of Small Pulley
NUMBER OF GROOVES ON THE SMALL PULLEY
PD
100
300
500
700
1160
1500
1750
2500
3500
10
11
12
14
15
16
18
20
22
24
25
28
30
32
.376
.007
.025
.035
.049
.063
.082
.097
.106
.149
.414
.008
.027
.038
.056
.071
.092
.108
.117
.163
.451
.009
.029
.043
.059
.079
.101
.119
.127
.179
.526
.011
.033
.048
.067
.089
.114
.135
.144
.201
.564
.013
.036
.051
.073
.097
.123
.144
.160
.223
.602
.014
.040
.055
.078
.104
.135
.157
.169
.239
.677
.016
.046
.062
.085
.114
.147
.171
.185
.262
.752
.017
.052
.068
.096
.123
.160
.185
.212
.298
.827
.019
.059
.076
.107
.141
.182
.212
.235
.328
.902
.021
.063
.084
.119
.154
.198
.231
.255
.358
.940
.022
.066
.088
.124
.160
.206
.241
.266
.372
1.053
.025
.076
.098
.138
.179
.230
.269
.304
.425
1.128
.030
.087
.104
.146
.190
.246
.289
.317
.441
1.203
.032
.092
.111
.156
.203
.263
.308
.338
.470
5mm PITCH—9mm WIDE BELT
RPM of Small Pulley
NUMBER OF GROOVES ON THE SMALL PULLEY
PD
100
300
500
700
1160
1500
1750
2500
3500
11
12
14
15
16
18
20
22
24
25
28
30
.689
.021
.063
.090
.129
.162
.210
.243
.267
.372
.752
.024
.069
.099
.138
.180
.231
.270
.291
.405
.877
.027
.081
.117
.162
.207
.270
.315
.342
.477
.940
.030
.090
.126
.174
.225
.291
.339
.366
.510
1.003
.033
.096
.132
.186
.240
.309
.360
.393
.549
1.128
.039
.108
.150
.210
.270
.348
.405
.441
.615
1.253
.042
.126
.165
.231
.300
.387
.453
.492
.690
1.379
.045
.138
.183
.255
.327
.423
.495
.540
.756
1.504
.051
.153
.198
.279
.360
.465
.540
.588
.822
1.566
.053
.159
.206
.291
.375
.484
.562
.613
.856
1.754
.063
.186
.231
.324
.420
.543
.633
.687
.960
1.880
.069
.204
.249
.348
.447
.579
.675
.735
1.03
Belt life will be reduced for ratings to the left of the heavy line.
Gear Catalog
123
MINIATURE TIMING BELTS & PULLEYS
MINIATURE HTD TIMING BELT DRIVES (Continued)
HORSEPOWER RATINGS
5mm PITCH—15mm WIDE BELT
RPM of Small Pulley
NUMBER OF GROOVES ON THE SMALL PULLEY
PD
100
300
500
700
1160
1500
1750
2500
3500
11
12
14
15
16
18
20
22
24
28
30
.689
.038
.115
.164
.236
.296
.384
.445
.489
.681
.752
.043
.126
.181
.252
.329
.423
.494
.533
.742
.877
.049
.148
.214
.296
.379
.494
.577
.626
.874
.940
.054
.164
.230
.318
.412
.533
.621
.670
.934
1.003
.060
.175
.241
.340
.439
.566
.659
.720
1.00
1.128
.071
.197
.274
.384
.494
.637
.742
.808
1.12
1.253
.076
.230
.302
.423
.549
.709
.830
.901
1.26
1.379
.082
.252
.335
.467
.599
.775
.907
.989
1.38
1.504
.093
.280
.362
.511
.659
.852
.989
1.07
1.50
1.754
.115
.340
.423
.593
.769
.995
1.16
1.25
1.75
1.880
.126
.373
.456
.637
.819
1.06
1.23
1.34
1.88
Belt life will be reduced for ratings to the left of the heavy line.
CENTER DISTANCE
To calculate the approximate Belt Length:
D1 – D2
BL = 2C +
+ 1.57 (D1 + D2)
4C
An approximate formula for center distance of a timing belt drive is:
C= P
4
NB – N1 + N2 +
2
(
NB – N1 + N2
2
) ( )
2
–2
N1 – N2
¹
2
Where:
C = Center Distance—Inches
P = Belt Pitch—Inches
NB = Number of Teeth in Belt
N1 = Number of Grooves in larger Pulley
N2 = Number of Grooves in smaller Pulley
BL = Belt Length
D1 = Pitch Diameter of larger Pulley
D2 = Pitch Diameter of smaller Pulley
INSTALLATION SUGGESTIONS
1. Use care in handling belts to avoid breakage of the reinforcing fibers.
2. Make sure shafts are parallel and pulleys in alignment.
3. Belt should fit snugly, neither too loose nor too tight. Avoid preload, which can cause premature failure.
4. Provision for some Center Distance adjustment will ease the installation and permit proper initial fitting of belts.
124
Gear Catalog
MINIATURE HTD TIMING BELTS
3mm Pitch
3M SERIES
6 AND 9mm WIDTHS
NEOPRENE—NYLON COVERED, FIBERGLASS REINFORCED
AMBIENT TEMPERATURE RANGE— –18°C to +85°C
BREAKING STRENGTH—6 mm WIDTH—74.4 KGS
9 mm WIDTH—111.6 KGS
3 MM.
.118 IN.
2.41 MM.
.095 IN.
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
35
37
48
49
50
52
53
56
59
60
65
67
68
69
70
71
75
78
80
84
85
88
89
90
92
94
95
96
97
99
100
104
106
111
112
113
115
119
Pitch Length
mm
105
111
144
147
150
156
159
168
177
180
195
201
204
207
210
213
225
234
240
252
255
264
267
270
276
282
285
288
291
297
300
312
318
333
336
339
345
357
Inch
4.134
4.370
5.669
5.787
5.905
6.142
6.260
6.614
6.968
7.087
7.677
7.913
8.031
8.150
8.268
8.386
8.858
9.213
9.449
9.921
10.039
10.394
10.512
10.630
10.866
11.102
11.220
11.339
11.457
11.693
11.811
12.283
12.520
13.110
13.228
13.346
13.583
14.055
6mm Belt Width
Catalog
Item
Number
Code
3M035060 54214
3M037060 54215
3M048060 54216
3M049060 54217
3M050060 54218
3M052060 54219
3M053060 54220
3M056060 54221
3M059060 54222
3M060060 54223
3M065060 54224
3M067060 54225
3M068060 54226
3M069060 54227
3M070060 54228
3M071060 54229
3M075060 54230
3M078060 54231
3M080060 54232
3M084060 54233
3M085060 54234
3M088060 54235
3M089060 54236
3M090060 54237
3M092060 54238
3M094060 54239
3M095060 54240
3M096060 54241
3M097060 54242
3M099060 54243
3M100060 54244
3M104060 54245
3M106060 54246
3M111060 54247
3M112060 54248
3M113060 54249
3M115060 54250
3M119060 54251
9mm Belt Width
Catalog
Item
Number
Code
3M035090 54290
3M037090 54291
3M048090 54292
3M049090 54293
3M050090 54294
3M052090 54295
3M053090 54296
3M056090 54297
3M059090 54298
3M060090 54299
3M065090 54300
3M067090 54301
3M068090 54302
3M069090 54303
3M070090 54304
3M071090 54305
3M075090 54306
3M078090 54307
3M080090 54308
3M084090 54309
3M085090 54310
3M088090 54311
3M089090 54312
3M090090 54313
3M092090 54314
3M094090 54315
3M095090 54316
3M096090 54317
3M097090 54318
3M099090 54319
3M100090 54320
3M104090 54321
3M106090 54322
3M111090 54323
3M112090 54324
3M113090 54325
3M115090 54326
3M119090 54327
1.17 MM.
.046 IN.
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
121
128
130
132
140
145
149
153
155
158
160
162
163
167
171
175
177
179
188
192
199
200
204
211
223
237
250
251
294
315
354
375
415
421
500
510
621
Pitch Length
mm
363
384
390
396
420
435
447
459
465
474
480
486
489
501
513
525
531
537
564
576
597
600
612
633
669
711
750
753
892
945
1062
1125
1245
1263
1500
1530
1863
Inch
14.291
15.118
15.354
15.591
16.535
17.126
17.598
18.071
18.307
18.661
18.898
19.134
19.252
19.724
20.197
20.670
20.905
21.142
22.205
22.677
23.504
23.622
24.094
24.921
26.338
27.992
29.527
29.646
34.724
37.205
41.811
44.291
49.016
49.724
59.055
60.235
73.346
6mm Belt Width
Catalog
Item
Number
Code
3M121060 54252
3M128060 54253
3M130060 54254
3M132060 54255
3M140060 54256
3M145060 54257
3M149060 54258
3M153060 54259
3M155060 54260
3M158060 54261
3M160060 54262
3M162060 54263
3M163060 54264
3M167060 54265
3M171060 54266
3M175060 54267
3M177060 54268
3M179060 54269
3M188060 54270
3M192060 54271
3M199060 54272
3M200060 54273
3M204060 54274
3M211060 54275
3M223060 54276
3M237060 54277
3M250060 54278
3M251060 54279
3M294060 54280
3M315060 54281
3M354060 54282
3M375060 54284
3M415060 54285
3M421060 54286
3M500060 54287
3M510060 54288
3M621060 54289
Gear Catalog
9mm Belt Width
Catalog
Item
Number
Code
3M121090 54328
3M128090 54329
3M130090 54330
3M132090 54331
3M140090 54332
3M145090 54333
3M149090 54334
3M153090 54335
3M155090 54336
3M158090 54337
3M160090 54338
3M162090 54339
3M163090 54340
3M167090 54341
3M171090 54342
3M175090 54343
3M177090 54344
3M179090 54345
3M188090 54346
3M192090 54347
3M199090 54348
3M200090 54349
3M204090 54350
3M211090 54351
3M223090 54352
3M237090 54353
3M250090 54354
3M251090 54355
3M294090 54356
3M315090 54357
3M354090 54358
3M375090 54360
3M415090 54361
3M421090 54362
3M500090 54363
3M510090 54364
3M621090 54365
125
TIMING BELT PULLEYS
3mm PITCH
ALUMINUM
PA SERIES
FOR
6mm WIDE BELTS
ALUMINUM ALLOY—CLEAR ANODIZED
COMPLETE WITH SETSCREWS
WITH FLANGES
18-44 GROOVES
WITH FLANGES
10-17 GROOVES
L
L
SETSCREW
D
FACE
FACE
O.D.
C
O.D.
BORE
FLANGE
DIAMETER
FLANGE
DIAMETER
STANDARD TOLERANCES
DIMENSION
BORE
O.D.
D
D/2
SETSCREW
D/2
C
BORE
WITHOUT FLANGES
TOLERANCES
All
10-26 Grooves
28-48 Grooves
60-72 Grooves
+.001 – .000
+.002 – .000
+.003 – .000
+.004 – .000
L
D
FACE
D/2
O.D.
C
BORE
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia.
O.D.
10
11
12
13
14
15
16
17
18
19
20
22
24
25
26
28
30
32
34
36
38
40
44
48
50
56
60
62
72
.376
.414
.451
.489
.526
.564
.602
.639
.677
.714
.752
.827
.902
.940
.977
1.053
1.128
1.203
1.278
1.353
1.429
1.504
1.654
1.805
1.880
2.105
2.256
2.331
2.707
.346 .125
.384
.421
.459
.496 .1875
.534
.572
.609
.647
.684
.722
.797
.872
.910
.947
1.023 .250
1.098
1.173
1.248
1.323
1.399
1.474
1.624
1.775
1.850
2.075 .3125
2.226
2.301
2.677
B
Face
Width
.282
.386
C
D
L
.505
.530
.580
.610 15/64 9/16
.635
.685
.710
.740
.442
.468
.500
.562
.625
11/16
.625
.625
.701 19/64
.776
.851
.921
1.000
1.075
23/32
1.150
1.300
.407
1.250 21/64 47/64
*Pulleys with 10 to 13 grooves have one setscrew. All others have two at 90°.
126
Gear Catalog
Flange
Dia.
.505
.530
.580
.610
.635
.685
.710
.740
.790
.815
.895
.945
1.025
1.060
1.105
1.173
1.250
1.323
1.398
1.473
1.549
1.625
1.775
—
—
—
—
—
—
Setscrew*
#4-40
#6-40
#8-32
With Flanges
Catalog
Item
Number
Code
PA3010DF060
PA3011DF060
PA3012DF060
PA3013DF060
PA3014DF060
PA3015DF060
PA3016DF060
PA3017DF060
PA3018DF060
PA3019DF060
PA3020DF060
PA3022DF060
PA3024DF060
PA3025DF060
PA3026DF060
PA3028DF060
PA3030DF060
PA3032DF060
PA3034DF060
PA3036DF060
PA3038DF060
PA3040DF060
PA3044DF060
—
—
—
—
—
—
54448
54449
54450
54451
54452
54453
54454
54455
54456
54457
54458
54459
54460
54461
54462
54463
54464
54465
54466
54467
54468
54469
54470
—
—
—
—
—
—
Without Flanges
Catalog
Item
Number
Code
—
—
—
—
—
—
—
—
PA3018NF060
PA3019NF060
PA3020NF060
PA3022NF060
PA3024NF060
PA3025NF060
PA3026NF060
PA3028NF060
PA3030NF060
PA3032NF060
PA3034NF060
PA3036NF060
PA3038NF060
PA3040NF060
PA3044NF060
PA3048NF060
PA3050NF060
PA3056NF060
PA3060NF060
PA3062NF060
PA3072NF060
—
—
—
—
—
—
—
—
54471
54472
54473
54474
54475
54476
54477
54478
54479
54480
54481
54482
54483
54484
54485
54486
54487
54488
54489
54490
54491
TIMING BELT PULLEYS
3mm PITCH
ALUMINUM
PA SERIES
FOR
9mm WIDE BELTS
ALUMINUM ALLOY—CLEAR ANODIZED
COMPLETE WITH SETSCREWS
WITH FLANGES
18-44 GROOVES
WITH FLANGES
10-17 GROOVES
L
L
SETSCREW
D
FACE
FACE
O.D.
C
O.D.
BORE
FLANGE
DIAMETER
FLANGE
DIAMETER
STANDARD TOLERANCES
DIMENSION
BORE
O.D.
D
D/2
SETSCREW
D/2
C
BORE
WITHOUT FLANGES
TOLERANCES
All
10-26 Grooves
28-48 Grooves
60-72 Grooves
+.001 –.000
+.002 –.000
+.003 –.000
+.004 –.000
L
D
FACE
D/2
O.D.
C
BORE
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia.
O.D.
10
11
12
13
14
15
16
17
18
19
20
22
24
25
26
28
30
32
34
36
38
40
44
48
50
56
60
62
72
.376
.414
.451
.489
.526
.564
.602
.639
.677
.714
.752
.827
.902
.940
.977
1.053
1.128
1.203
1.278
1.353
1.429
1.504
1.654
1.805
1.880
2.105
2.256
2.331
2.707
.346 .125
.384
.421
.459
.496 .1875
.534
.572
.609
.647
.684
.722
.797
.872
.910
.947
1.023 .250
1.098
1.173
1.248
1.323
1.399
1.474
1.624
1.775
1.850
2.075 .3125
2.226
2.301
2.677
B
Face
Width
.401
.506
.527
.500
C
D
L
.505
.530
.580
.610 15/64 11/16
.635
.685
.710
.740
.442
.468
.500
.562
.625
13/16
.625
.625
.701 19/64
.776
.851
.921
1.000
1.075
27/32
1.150
1.300
1.250
3/8
7/8
Flange
Dia.
.505
.530
.580
.610
.635
.685
.710
.740
.790
.815
.895
.945
1.025
1.060
1.105
1.173
1.250
1.323
1.398
1.473
1.549
1.625
1.775
—
—
—
—
—
—
Setscrew*
#4-40
#6-40
#8-32
With Flanges
Catalog
Item
Number
Code
PA3010DF090
PA3011DF090
PA3012DF090
PA3013DF090
PA3014DF090
PA3015DF090
PA3016DF090
PA3017DF090
PA3018DF090
PA3019DF090
PA3020DF090
PA3022DF090
PA3024DF090
PA3025DF090
PA3026DF090
PA3028DF090
PA3030DF090
PA3032DF090
PA3034DF090
PA3036DF090
PA3038DF090
PA3040DF090
PA3044DF090
—
—
—
—
—
—
54492
54493
54494
54495
54496
54497
54498
54499
54500
54501
54502
54503
54504
54505
54506
54507
54508
54509
54510
54511
54512
54513
54514
—
—
—
—
—
—
Without Flanges
Catalog
Item
Number
Code
—
—
—
—
—
—
—
—
PA3018NF090
PA3019NF090
PA3020NF090
PA3022NF090
PA3024NF090
PA3025NF090
PA3026NF090
PA3028NF090
PA3030NF090
PA3032NF090
PA3034NF090
PA3036NF090
PA3038NF090
PA3040NF090
PA3044NF090
PA3048NF090
PA3050NF090
PA3056NF090
PA3060NF090
PA3062NF090
PA3072NF090
—
—
—
—
—
—
—
—
54515
54516
54517
54518
54519
54520
54521
54522
54523
54524
54525
54526
54527
54528
54529
54530
54531
54532
54533
54534
54535
*Pulleys with 10 to 13 grooves have one setscrew. All others have two at 90°.
Gear Catalog
127
TIMING BELT PULLEYS
3mm PITCH
LEXAN
PL SERIES
FOR
9mm WIDE BELTS
LEXAN—FIBERGLASS REINFORCED
SINGLE FLANGE
10-28 GROOVES
SINGLE FLANGE
32-120 GROOVES
L
L
FACE
3/16
D
1/2
C F.D.
O.D. B
D
F.D.
O.D.
B
C
FACE
DOUBLE FLANGE
10-28 GROOVES
DOUBLE FLANGE
32-80 GROOVES
L
L
STANDARD TOLERANCES
DIMENSION
BORE
D
D
TOLERANCES
All
+.001 –.000
C
O.D. B
F.D.
O.D.
FACE
F.D.
B
C
3/16
FACE
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia.
O.D.
10
11
12
13
14
15
16
17
18
19
20
22
25
28
32
36
40
48
60
72
80
84
96
120
.376
.414
.451
.489
.526
.564
.602
.639
.677
.714
.752
.827
.940
1.053
1.203
1.353
1.504
1.805
2.256
2.707
3.008
3.158
3.609
4.511
.346
.384
.421
.459
.496
.534
.572
.609
.647
.684
.722
.797
.910
1.023
1.173
1.323
1.474
1.775
2.226
2.677
2.978
3.128
3.579
4.481
B
Face
Width
D
5/8
L
3/4*
.63
.69
3/16
11/16
1/4
7/16
13/16
3/4
1/4
7/8
13/16**
5/16
5/16
13/16
3/8
*13/16" for Double Flanges.
**7/8" for Double Flanges.
†No Flange.
128
C
Flange
Dia.
Gear Catalog
1/2
1
3/8
7/8
.73
.78
,87
.93
.93
.93
1.06
1.19
1.24
1.44
1.57
1.76
2.02
2.46
2.92
3.29
3.38
3.83
—
Single Flange
Catalog
Item
Number
Code
PL3010SF090
PL3011SF090
PL3012SF090
PL3013SF090
PL3014SF090
PL3015SF090
PL3016SF090
PL3017SF090
PL3018SF090
PL3019SF090
PL3020SF090
PL3022SF090
PL3025SF090
PL3028SF090
PL3032SF090
PL3036SF090
PL3040SF090
PL3048SF090
PL3060SF090
PL3072SF090
PL3080SF090
PL3084SF090
PL3096SF090
PL3120NF090†
54536
54537
54538
54539
54540
54541
54542
54543
54544
54545
54546
54547
54548
54549
54550
54551
54552
54553
54554
54555
54556
54557
54558
54559
Double Flange
Catalog
Item
Number
Code
PL3010DF090
PL3011DF090
PL3012DF090
PL3013DF090
PL3014DF090
PL3015DF090
PL3016DF090
PL3017DF090
PL3018DF090
PL3019DF090
PL3020DF090
PL3022DF090
PL3025DF090
PL3028DF090
PL3032DF090
PL3036DF090
PL3040DF090
PL3048DF090
PL3060DF090
PL3072DF090
PL3080DF090
—
—
—
54560
54561
54562
54563
54564
54565
54566
54567
54568
54569
54570
54571
54572
54573
54574
54575
54576
54577
54578
54579
54580
—
—
—
TIMING BELT PULLEYS
3mm PITCH
LEXAN
PLB SERIES
FOR 9mm WIDE BELTS
LEXAN—FIBERGLASS REINFORCED
KNURLED ALUMINUM INSERTS
COMPLETE WITH SETSCREWS
SINGLE FLANGE
10-16 GROOVES
SINGLE FLANGE
17-28 GROOVES
SETSCREW
L
L
D
1
8
5
32
SETSCREW
A C F.D.
O.D. B
FACE
O.D.
D
A C F.D.
B
SPOT
DRILL
3
16
FACE
DIMENSION
BORE
TOLERANCES
All
DOUBLE FLANGE
17-28 GROOVES
DOUBLE FLANGE
10-16 GROOVES
STANDARD TOLERANCES
SETSCREW
L
D
5
32
L
+.001 –.000
D
1
8
O.D. B
SETSCREW
A
FACE
C
SPOT DRILL
F.D.
O.D.
SPOT
DRILL
B
A C
3
16
FACE
F.D.
SPOT DRILL
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia. O.D.
10
11
12
13
14
15
16
.376
.414
.451
.489
.526
.564
.602
17
.639
18
.677
19
.714
20
.752
22
.827
25
.940
28
1.053
B
Face
Width
C
.346
.384
5/8
.421
.459 3/16
.496
.534
.572
.609 3/16
1/4
11/16
.647 3/16
1/4 7/16
.684 3/16
1/4
3/16
.722
1/4
.797 3/16
1/4
1/4
.910 5/16
3/8
3/4
1/4
1.023 5/16
3/8
Insert
D Dia.
L
Flange
Dia. Setscrew
.63
3/4
.69
.73
.78
3/8
.87
#6-32
1/4
.93
13/16
1.06
1.19
#8-32
1/2
1.24
Single Flange
Catalog
Item
Number
Code
PLB3010SF090
PLB3011SF090
PLB3012SF090
PLB3013SF090
PLB3014SF090
PLB3015SF090
PLB3016SF090
PLB3017SF090-3/16
PLB3017SF090-1/4
PLB3018SF090-3/16
PLB3018SF090-1/4
PLB3019SF090-3/16
PLB3019SF090-1/4
PLB3020SF090-3/16
PLB3020SF090-1/4
PLB3022SF090-3/16
PLB3022SF090-1/4
PLB3025SF090-1/4
PLB3025SF090-5/16
PLB3025SF090-3/8
PLB3028SF090-1/4
PLB3028SF090-5/16
PLB3028SF090-3/8
54581
54582
54583
54584
54585
54586
54587
54588
54589
54590
54591
54592
54593
54594
54595
54596
54597
54598
54599
54600
54601
54602
54603
Double Flange
Catalog
Item
Number
Code
PLB3010DF090
PLB3011DF090
PLB3012DF090
PLB3013DF090
PLB3014DF090
PLB3015DF090
PLB3016DF090
PLB3017DF090-3/16
PLB3017DF090-1/4
PLB3018DF090-3/16
PLB3018DF090-1/4
PLB3019DF090-3/16
PLB3019DF090-1/4
PLB3020DF090-3/16
PLB3020DF090-1/4
PLB3022DF090-3/16
PLB3022DF090-1/4
PLB3025DF090-1/4
PLB3025DF090-5/16
PLB3025DF090-3/8
PLB3028DF090-1/4
PLB3028DF090-5/16
PLB3028DF090-3/8
Gear Catalog
54633
54634
54635
54636
54637
54638
54639
54640
54641
54642
54643
54644
54645
54646
54647
54648
54649
54650
54651
54652
54653
54654
54655
129
TIMING BELT PULLEYS
3mm PITCH
LEXAN
PLB SERIES
FOR 9mm WIDE BELTS
LEXAN—FIBERGLASS REINFORCED
KNURLED ALUMINUM INSERTS
COMPLETE WITH SETSCREWS
SINGLE FLANGE
DOUBLE FLANGE
SETSCREW
SETSCREW
L
D
5
32
L
D
5
32
O.D.
O.D.
A C F.D.
B
A C
F.D.
B
3
16
FACE
3
16
SPOT DRILL
FACE
STANDARD TOLERANCES
DIMENSION
BORE
SPOT DRILL
TOLERANCES
All
+.001 – .000
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia. O.D.
B
32
1.203 1.173
36
1.353 1.323
40
1.504 1.474
48
1.805 1.775
60
2.256 2.226
72
2.707 2.677
80
3.008 2.978
84
96
120
3.158 3.128
3.609 3.579
4.511 4.481
Face
Width
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
5/16
3/8 7/16
1/2
5/16
3/8
1/2
5/16
3/8
1/2
5/16
3/8
1/2
5/16
3/8
1/2
3/8 1/2
1/2
†7/8” for Double Flange
*No Flange
130
Gear Catalog
C
Insert
D Dia.
L
3/4
Flange
Dia. Setscrew
1.44
1.57
1/4
1/2
13/16
#8-32
1.76
2.02
7/8
2.46
13/16† 2.92
5/16
3.29
5/8
3.38
13/16
3.83
1
3/8
7/8
—
#10-32
Single Flange
Catalog
Item
Number
Code
PLB3032SF090-1/4
PLB3032SF090-5/16
PLB3032SF090-3/8
PLB3036SF090-1/4
PLB3036SF090-5/16
PLB3036SF090-3/8
PLB3040SF090-1/4
PLB3040SF090-5/16
PLB3040SF090-3/8
PLB3048SF090-1/4
PLB3048SF090-5/16
PLB3048SF090-3/8
PLB3060SF090-5/16
PLB3060SF090-3/8
PLB3060SF090-1/2
PLB3072SF090-5/16
PLB3072SF090-3/8
PLB3072SF090-1/2
PLB3080SF090-5/16
PLB3080SF090-3/8
PLB3080SF090-1/2
PLB3084SF090-5/16
PLB3084SF090-3/8
PLB3084SF090-1/2
PLB3096SF090-5/16
PLB3096SF090-3/8
PLB3096SF090-1/2
PLB3120NF090-3/8*
PLB3120NF090-1/2*
54604
54605
54606
54607
54608
54609
54610
54611
54612
54613
54614
54615
54616
54617
54618
54619
54620
54621
54622
54623
54624
54625
54626
54627
54628
54629
54630
54631
54632
Double Flange
Catalog
Item
Number
Code
PLB3032DF090-1/4
PLB3032DF090-5/16
PLB3032DF090-3/8
PLB3036DF090-1/4
PLB3036DF090-5/16
PLB3036DF090-3/8
PLB3040DF090-1/4
PLB3040DF090-5/16
PLB3040DF090-3/8
PLB3048DF090-1/4
PLB3048DF090-5/16
PLB3048DF090-3/8
PLB3060DF090-5/16
PLB3060DF090-3/8
PLB3060DF090-1/2
PLB3072DF090-5/16
PLB3072DF090-3/8
PLB3072DF090-1/2
PLB3080DF090-5/16
PLB3080DF090-3/8
PLB3080DF090-1/2
—
—
—
—
—
—
—
—
54656
54657
54658
54659
54660
54661
54662
54663
54664
54665
54666
54667
54668
54669
54670
54671
54672
54673
54674
54675
54676
—
—
—
—
—
—
—
—
MINIATURE HTD TIMING BELTS
5mm PITCH
5M SERIES
9 and 15mm WIDTHS
NEOPRENE—NYLON COVERED, FIBERGLASS REINFORCED
AMBIENT TEMPERATURE RANGE— –18°C to +85°C
BREAKING STRENGTH—9 mm WIDTH—234 KGS
15 mm WIDTH—390 KGS
5 MM.
.197 IN.
3.56 MM.
.140 IN.
2.08 MM.
.082 IN.
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
Pitch Length
of
Grooves mm
Inch
64
66
70
75
80
85
90
95
100
104
107
113
120
123
127
133
134
142
148
151
160
166
167
170
178
185
186
190
200
210
225
254
284
319
358
360
374
379
389
400
505
320
330
350
375
400
425
450
475
500
520
535
565
600
615
635
665
670
710
740
755
800
830
835
850
890
925
930
950
1000
1050
1125
1270
1420
1595
1790
1800
1870
1895
1945
2000
2525
12.598
12.992
13.779
14.764
15.748
16.732
17.716
18.700
19.685
20.472
21.063
22.244
23.622
24.213
25.000
26.181
26.378
27.953
29.134
29.724
31.496
32.677
32.874
33.464
35.039
36.417
36.614
37.401
39.370
41.339
44.291
50.000
55.905
62.795
70.472
70.866
73.622
74.606
76.575
78.740
99.409
9mm Belt Width
Catalog
Item
Number
Code
—
5M066090
5M070090
5M075090
5M080090
5M085090
5M090090
5M095090
5M100090
5M104090
5M107090
5M113090
5M120090
5M123090
5M127090
5M133090
5M134090
5M142090
5M148090
5M151090
5M160090
5M166090
5M167090
5M170090
5M178090
5M185090
5M186090
5M190090
5M200090
5M210090
5M225090
5M254090
5M284090
5M319090
5M358090
5M360090
5M374090
5M379090
5M389090
5M400090
5M505090
—
54367
54368
54369
54370
54371
54372
54373
54374
54375
54376
54377
54378
54379
54380
54381
54382
54383
54384
54385
54386
54387
54388
54389
54390
54391
54392
54393
54394
54395
54396
54397
54398
54399
54400
54401
54402
54403
54404
54405
54406
15mm Belt Width
Catalog
Item
Number
Code
5M064150
5M066150
5M070150
5M075150
5M080150
5M085150
5M090150
5M095150
5M100150
5M104150
5M107150
5M113150
5M120150
5M123150
5M127150
5M133150
5M134150
5M142150
5M148150
5M151150
5M160150
5M166150
5M167150
5M170150
5M178150
5M185150
5M186150
5M190150
5M200150
5M210150
5M225150
5M254150
5M284150
5M319150
5M358150
5M360150
5M374150
5M379150
5M389150
5M400150
5M505150
54407
54408
54409
54410
54411
54412
54413
54414
54415
54416
54417
54418
54419
54420
54421
54422
54423
54424
54425
54426
54427
54428
54429
54430
54431
54432
54433
54434
54435
54436
54437
54438
54439
54440
54441
54442
54443
54444
54445
54446
54447
Gear Catalog
131
TIMING BELT PULLEYS
5mm PITCH
ALUMINUM
PA SERIES
FOR
9mm WIDE BELTS
ALUMINUM ALLOY—CLEAR ANODIZED
COMPLETE WITH SETSCREWS
WITH FLANGE
WITHOUT FLANGE
L
L
FACE
FACE
D
O.D.
O.D.
C
C
BORE
BORE
FLANGE
DIAMETER
D
D/2
D/2
SETSCREW
STANDARD TOLERANCES
DIMENSION
BORE
O.D.
TOLERANCES
All
12–16 Grooves
17–32 Grooves
34–62 Grooves
72 Grooves
+.001 – .000
+.002 – .000
+.003 – .000
+.004 – .000
+.005 – .000
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia.
O.D.
12
13
14
15
16
17
18
19
20
22
24
25
26
28
30
32
34
36
38
40
44
48
50
56
60
62
72
.752
.815
.877
.940
1.003
1.065
1.128
1.191
1.253
1.379
1.504
1.566
1.629
1.754
1.880
2.005
2.130
2.256
2.381
2.506
2.757
3.008
3.133
3.509
3.760
3.885
4.511
.707
.770
.832
.895
.958
1.020
1.083
1.146
1.208 .250
1.334
1.459
1.521
1.584
1.709
1.835
1.960
2.085
2.211
2.336
2.461 .3125
2.712
2.963
3.088
3.464 .375
3.715
3.840
4.466
B
Face
Width
35/64
C
7/16
1/2
1/2
9/16
9/16
5/8
11/16
3/4
13/16
15/16
1
1
1-1/16
1-3/16
1-3/16
1-1/4
1-3/8
1-1/2
D
L
7/8
15/16
1
1-1/16
1/4 51/64 1-3/32
1-3/16
1-1/4
1-5/16
1-3/8
1-1/2
1-5/8
1-11/16
1-3/4
5/16 55/64 1-7/8
2
2-1/8
2-1/4
—
—
—
—
25/64 15/16
—
—
—
—
—
—
*Pulleys with 12 and 13 grooves have one setscrew. All others have two at 90°.
132
Gear Catalog
Flange
Dia.
Setscrew*
#8-32
#10-32
With Flange
Catalog
Item
Number
Code
PA5012DF090
PA5013DF090
PA5014DF090
PA5015DF090
PA5016DF090
PA5017DF090
PA5018DF090
PA5019DF090
PA5020DF090
PA5022DF090
PA5024DF090
PA5025DF090
PA5026DF090
PA5028DF090
PA5030DF090
PA5032DF090
PA5034DF090
—
—
—
—
—
—
—
—
—
—
54677
54678
54679
54680
54681
54682
54683
54684
54685
54686
54687
54688
54689
54690
54691
54692
54693
—
—
—
—
—
—
—
—
—
—
Without Flange
Catalog
Item
Number
Code
PA5012NF090
PA5013NF090
PA5014NF090
PA5015NF090
PA5016NF090
PA5017NF090
PA5018NF090
PA5019NF090
PA5020NF090
PA5022NF090
PA5024NF090
PA5025NF090
PA5026NF090
PA5028NF090
PA5030NF090
PA5032NF090
PA5034NF090
PA5036NF090
PA5038NF090
PA5040NF090
PA5044NF090
PA5048NF090
PA5050NF090
PA5056NF090
PA5060NF090
PA5062NF090
PA5072NF090
54694
54695
54696
54697
54698
54699
54700
54701
54702
54703
54704
54705
54706
54707
54708
54709
54710
54711
54712
54713
54714
54715
54716
54717
54718
54719
54720
TIMING BELT PULLEYS
5mm PITCH
ALUMINUM
PA SERIES
FOR
15mm WIDE BELTS
ALUMINUM ALLOY—CLEAR ANODIZED†
COMPLETE WITH SETSCREWS
WITH FLANGE
WITHOUT FLANGE
L
L
FACE
FACE
D
O.D.
O.D.
C
C
BORE
BORE
FLANGE
DIAMETER
D
D/2
D/2
SETSCREW
STANDARD TOLERANCES
DIMENSION
BORE
O.D.
TOLERANCES
All
12–16 Grooves
17–32 Grooves
34–62 Grooves
72 Grooves
+.001 – .000
+.002 – .000
+.003 – .000
+.004 – .000
+.005 – .000
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia.
O.D.
12
13
14
15
16
17
18
19
20
22
24
25
26
28
30
32
34
36
38
40
44
48
50
56
60
62
72
.752
.815
.877
.940
1.003
1.065
1.128
1.191
1.253
1.379
1.504
1.566
1.629
1.754
1.880
2.005
2.130
2.256
2.381
2.506
2.757
3.008
3.133
3.509
3.760
3.885
4.511
.707
.770
.832
.895
.958
1.020
1.083
1.146
1.208
1.334
1.459
1.521
1.584
1.709
1.835
1.960
2.085
2.211
2.336
2.461
2.712
2.963
3.088
3.464
3.715
3.840
4.466
B
Face
Width
.250
25/32
C
7/16
1/2
1/2
9/16
9/16
5/8
11/16
3/4
13/16
15/16
1
1
1-1/16
1-3/16
1-3/16
1-1/4
1-3/8
.3125
1-1/2
.375
D
L
Flange
Dia.
7/8
15/16
1
1-1/16
1/4 1-1/32 1-3/32
1-3/16
1-1/4
1-5/16
1-3/8
1-1/2
1-5/8
1-11/16
1-3/4
5/16 1-3/32 1-7/8
2
2-1/8
2-1/4
—
—
—
—
13/32 1-3/16
—
—
—
—
—
—
Setscrew*
#8-32
#10-32
With Flange
Catalog
Item
Number
Code
PA5012DF150
PA5013DF150
PA5014DF150
PA5015DF150
PA5016DF150
PA5017DF150
PA5018DF150
PA5019DF150
PA5020DF150
PA5022DF150
PA5024DF150
PA5025DF150
PA5026DF150
PA5028DF150
PA5030DF150
PA5032DF150
PA5034DF150
—
—
—
—
—
—
—
—
—
—
54721
54722
54723
54724
54725
54726
54727
54728
54729
54730
54731
54732
54733
54734
54735
54736
54737
—
—
—
—
—
—
—
—
—
—
Without Flange
Catalog
Item
Number
Code
PA5012NF150
PA5013NF150
PA5014NF150
PA5015NF150
PA5016NF150
PA5017NF150
PA5018NF150
PA5019NF150
PA5020NF150
PA5022NF150
PA5024NF150
PA5025NF150
PA5026NF150
PA5028NF150
PA5030NF150
PA5032NF150
PA5034NF150
PA5036NF150
PA5038NF150
PA5040NF150
PA5044NF150
PA5048NF150
PA5050NF150
PA5056NF150
PA5060NF150
PA5062NF150
PA5072NF150
54738
54739
54740
54741
54742
54743
54744
54745
54746
54747
54748
54749
54750
54751
54752
54753
54754
54755
54756
54757
54758
54759
54760
54761
54762
54763
54764
*Pulleys with 12 and 13 grooves have one setscrew. All others have two at 90°.
†44-72 grooves material is A356-T6 (cast).
Gear Catalog
133
TIMING BELT PULLEYS
5mm PITCH
LEXAN
PL SERIES
FOR
9mm WIDE BELTS
LEXAN—FIBERGLASS REINFORCED
SINGLE FLANGE
DOUBLE FLANGE
L
L
FACE
3/16
O.D.
D
D
F.D.
B
O.D.
C
F.D.
B
C
3/16
STANDARD TOLERANCES
DIMENSION
BORE
FACE
TOLERANCES
All
+.001 – .000
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Grooves
Pitch
Dia.
O.D.
11
12
13
14
15
16
17
18
19
20
22
25
28
29
30
40
50
.689
.752
.815
.877
.940
1.003
1.065
1.128
1.191
1.253
1.379
1.566
1.754
1.817
1.880
2.506
3.133
.644
.707
.770
.832
.895
.958
1.020
1.083
1.146
1.208
1.334
1.521
1.709
1.772
1.835
2.461
3.088
B
3/16
C
D
L
11/16
3/4
1/4
13/16
5/16
13/16*
7/16
1/4
7/8
5/16
*7/8" for Double Flange.
134
Face
Width
Gear Catalog
Flange
Dia.
.87
.93
.99
1.06
1.19
1.19
1.24
1.31
1.38
1.44
1.57
1.76
1.95
2.02
2.08
2.71
3.29
Single Flange
Catalog
Item
Number
Code
PL5011SF090
PL5012SF090
PL5013SF090
PL5014SF090
PL5015SF090
PL5016SF090
PL5017SF090
PL5018SF090
PL5019SF090
PL5020SF090
PL5022SF090
PL5025SF090
PL5028SF090
PL5029SF090
PL5030SF090
PL5040SF090
PL5050SF090
54765
54766
54767
54768
54769
54770
54771
54772
54773
54774
54775
54776
54777
54778
54779
54780
54781
Double Flange
Catalog
Item
Number
Code
PL5011DF090
PL5012DF090
PL5013DF090
PL5014DF090
PL5015DF090
PL5016DF090
PL5017DF090
PL5018DF090
PL5019DF090
PL5020DF090
PL5022DF090
PL5025DF090
PL5028DF090
PL5029DF090
PL5030DF090
PL5050DF090
PL5050DF090
54782
54783
54784
54785
54786
54787
54788
54789
54790
54791
54792
54793
54794
54795
54796
54797
54798
TIMING BELT PULLEYS
5mm PITCH
LEXAN
PLB SERIES
FOR 9mm WIDE BELTS
LEXAN—FIBERGLASS REINFORCED
KNURLED ALUMINUM INSERTS
COMPLETE WITH SETSCREWS
SINGLE FLANGE
STANDARD TOLERANCES
BORE
D
O.D.
TOLERANCES
All
FACE
11
.689
.644
12
.752
.707
13
.815
.770
14
.877
.832
15
.940
.895
16
1.003
.958
17
1.065 1.020
18
1.128 1.083
19
1.191 1.146
20
1.253 1.208
22
1.379 1.334
25
1.566 1.521
28
1.754 1.709
29
1.817 1.772
30
1.880 1.835
40
2.506 2.461
50
3.133 3.088
B
3/16
1/4
3/16
1/4
3/16
1/4
3/16
1/4
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
1/4
5/16
3/8
5/16
3/8
1/2
5/16
3/8
1/2
C
Insert
D Dia.
L
Flange
Dia.
Setscrew
.87
.93
11/16
3/8
#6-32
.99
1.06
1.19
1.19
1.24
3/4
1.31
1/4
7/16
A C
B
F.D.
B
+.001 – .000
Face
Width
O.D.
A C F.D.
3
16
No.
of
Pitch
Grooves Dia. O.D.
SETSCREW
L
D
5
32
L
5
32
DIMENSION
DOUBLE FLANGE
SETSCREW
13/16 1.38
1/2
1.44
#8-32
1.57
1.76
1.95
7/8
2.02
2.08
2.71
5/16 5/8 13/16*
#10-32
3.29
SPOT DRILL
3
16
FACE
Single Flange
Catalog
Item
Number
Code
PLB5011SF090-3/16
PLB5011SF090-1/4
PLB5012SF090-3/16
PLB5012SF090-1/4
PLB5013SF090-3/16
PLB5013SF090-1/4
PLB5014SF090-3/16
PLB5014SF090-1/4
PLB5015SF090-1/4
PLB5015SF090-5/16
PLB5015SF090-3/8
PLB5016SF090-1/4
PLB5016SF090-5/16
PLB5016SF090-3/8
PLB5017SF090-1/4
PLB5017SF090-5/16
PLB5017SF090-3/8
PLB5018SF090-1/4
PLB5018SF090-5/16
PLB5018SF090-3/8
PLB5019SF090-1/4
PLB5019SF090-5/16
PLB5019SF090-3/8
PLB5020SF090-1/4
PLB5020SF090-5/16
PLB5020SF090-3/8
PLB5022SF090-1/4
PLB5022SF090-5/16
PLB5022SF090-3/8
PLB5025SF090-1/4
PLB5025SF090-5/16
PLB5025SF090-3/8
PLB5028SF090-1/4
PLB5028SF090-5/16
PLB5028SF090-3/8
PLB5029SF090-1/4
PLB5029SF090-5/16
PLB5029SF090-1/4
PLB5030SF090-1/4
PLB5030SF090-5/16
PLB5030SF090-3/8
PLB5040SF090-5/16
PLB5040SF090-3/8
PLB5040SF090-1/2
PLB5050SF090-5/16
PLB5050SF090-3/8
PLB5050SF090-1/2
54799
54800
54801
54802
54803
54804
54805
54806
54807
54808
54809
54810
54811
54812
54813
54814
54815
54816
54817
54818
54819
54820
54821
54822
54823
54824
54825
54826
54827
54828
54829
54830
54831
54832
54833
54834
54835
54836
54837
54838
54839
54840
54841
54842
54843
54844
54845
SPOT DRILL
Double Flange
Catalog
Item
Number
Code
PLB5011DF090-3/16
PLB5011DF090-1/4
PLB5012DF090-3/16
PLB5012DF090-1/4
PLB5013DF090-3/16
PLB5013DF090-1/4
PLB5014DF090-3/16
PLB5014DF090-1/4
PLB5015DF090-1/4
PLB5015DF090-5/16
PLB5015DF090-3/8
PLB5016DF090-1/4
PLB5016DF090-5/16
PLB5016DF090-3/8
PLB5017DF090-1/4
PLB5017DF090-5/16
PLB5017DF090-3/8
PLB5018DF090-1/4
PLB5018DF090-5/16
PLB5018DF090-3/8
PLB5019DF090-1/4
PLB5019DF090-5/16
PLB5019DF090-3/8
PLB5020DF090-1/4
PLB5020DF090-5/16
PLB5020DF090-3/8
PLB5022DF090-1/4
PLB5022DF090-5/16
PLB5022DF090-3/8
PLB5025DF090-1/4
PLB5025DF090-5/16
PLB5025DF090-3/8
PLB5028DF090-1/4
PLB5028DF090-5/16
PLB5028DF090-3/8
PLB5029DF090-1/4
PLB5029DF090-5/16
PLB5029DF090-1/4
PLB5030DF090-1/4
PLB5030DF090-5/16
PLB5030DF090-3/8
PLB5040DF090-5/16
PLB5040DF090-3/8
PLB5040DF090-1/2
PLB5050DF090-5/16
PLB5050DF090-3/8
PLB5050DF090-1/2
54846
54847
54848
54849
54850
54851
54852
54853
54854
54855
54856
54857
54858
54859
54860
54861
54862
54863
54864
54865
54866
54867
54868
54869
54870
54871
54872
54873
54874
54875
54876
54877
54878
54879
54880
54881
54882
54883
54884
54885
54886
54887
54888
54889
54890
54891
54892
*7/8" for Double Flange.
Gear Catalog
135
ENGINEERING INFORMATION
SECTION CONTENTS
SPUR GEARS
NOMENCLATURE .................................................................................................................137 – 138
INVOLUTE........................................................................................................................................139
DIAMETRAL PITCH / PRESSURE ANGLE / TOOTH DIMENSIONS ............................................140
BACKLASH / UNDERCUT / FORMULAS.......................................................................................141
LEWIS FORMULA............................................................................................................................142
HELICAL GEARS
NOMENCLATURE / HELIX ANGLE................................................................................................143
FORMULAS......................................................................................................................................144
THRUST LOADS..............................................................................................................................145
MITER & BEVEL GEARS
NOMENCLATURE ...........................................................................................................................146
MOUNTING DISTANCE...................................................................................................................147
TOOTH STRENGTH / THRUST.......................................................................................................148
WORMS & WORM GEARS
HAND / EFFICIENCY / THRUST LOADS........................................................................................149
FORMULAS / SELF-LOCKING .......................................................................................................150
COUPLING / UNIVERSAL JOINTS..........................................................................................................151
GENERAL INFORMATION
MOUNTINGS / ALTERATIONS / LUBRICATION ...........................................................................152
MATERIALS / STYLES / KEYWAYS & SETSCREWS...................................................................153
HOW TO FIGURE HORSEPOWER & TORQUE.............................................................................154
APPLICATION CLASSIFICATIONS......................................................................................155 – 156
TERMS AND CONDITIONS............................................................................................................157 – 158
INDEX TO CATALOG NUMBERS .................................................................................................159 – 161
136
Gear Catalog
ENGINEERING INFORMATION
SPUR GEARS
GEAR NOMENCLATURE
ADDENDUM (a) is the height by which a tooth projects
beyond the pitch circle or pitch line.
BASE DIAMETER (Db) is the diameter of the base cylinder
from which the involute portion of a tooth profile is generated.
BACKLASH (B) is the amount by which the width of a tooth
space exceeds the thickness of the engaging tooth on the
pitch circles. As actually indicated by measuring devices,
backlash may be determined variously in the transverse, normal, or axial-planes, and either in the direction of the pitch circles or on the line of action. Such measurements should be
corrected to corresponding values on transverse pitch circles
for general comparisons.
BORE LENGTH is the total length through a gear, sprocket, or
coupling bore.
CIRCULAR PITCH (p) is the distance along the pitch circle or
pitch line between corresponding profiles of adjacent teeth.
CIRCULAR THICKNESS (t) is the length of arc between the
two sides of a gear tooth on the pitch circle, unless otherwise
specified.
CLEARANCE-OPERATING (c) is the amount by which the
dedendum in a given gear exceeds the addendum of its mating gear.
CONTACT RATIO (mc) in general, the number of angular
pitches through which a tooth surface rotates from the beginning to the end of contact.
GEAR is a machine part with gear teeth. When two gears
run together, the one with the larger number of teeth is called
the gear.
HUB DIAMETER is outside diameter of a gear, sprocket or
coupling hub.
HUB PROJECTION is the distance the hub extends beyond
the gear face.
INVOLUTE TEETH of spur gears, helical gears and worms
are those in which the active portion of the profile in the transverse plane is the involute of a circle.
LONG- AND SHORT-ADDENDUM TEETH are those of
engaging gears (on a standard designed center distance) one
of which has a long addendum and the other has a short
addendum.
KEYWAY is the machined groove running the length of the
bore. A similar groove is machined in the shaft and a key fits
into this opening.
NORMAL DIAMETRAL PITCH (P n ) is the value of the
diametral pitch as calculated in the normal plane of a helical
gear or worm.
NORMAL PLANE is the plane normal to the tooth surface at a
pitch point and perpendicular to the pitch plane. For a helical
gear this plane can be normal to one tooth at a point laying
in the plane surface. At such point, the normal plane contains
the line normal to the tooth surface and this is normal to the
pitch circle.
DEDENDUM (b) is the depth of a tooth space below the pitch
line. It is normally greater than the addendum of the mating
gear to provide clearance.
NORMAL PRESSURE ANGLE (øn) in a normal plane of helical tooth.
DIAMETRAL PITCH (P) is the ratio of the number of teeth to
the pitch diameter.
OUTSIDE DIAMETER (Do) is the diameter of the addendum
(outside) circle.
FACE WIDTH (F) is the length of the teeth in an axial plane.
FILLET RADIUS (rf) is the radius of the fillet curve at the base
of the gear tooth.
FULL DEPTH TEETH are those in which the working depth
equals 2.000 divided by the normal diametral pitch.
Gear Catalog
137
ENGINEERING INFORMATION
SPUR GEARS
GEAR NOMENCLATURE (Continued)
ROOT DIAMETER (Dr) is the diameter at the base of the tooth
space.
PITCH CIRCLE is the circle derived from a number of teeth
and a specified diametral or circular pitch. Circle on which
spacing or tooth profiles is established and from which the
tooth proportions are constructed.
PRESSURE ANGLE—OPERATING (ør) is determined by the
center distance at which the gears operate. It is the pressure
angle at the operating pitch diameter.
PITCH CYLINDER is the cylinder of diameter equal to the
pitch circle.
TIP RELIEF is an arbitrary modification of a tooth profile
whereby a small amount of material is removed near the tip of
the gear tooth.
PINION is a machine part with gear teeth. When two gears
run together, the one with the smaller number of teeth is called
the pinion.
UNDERCUT is a condition in generated gear teeth when any
part of the fillet curve lies inside a line drawn tangent to the
working profile at its point of juncture with the fillet.
PITCH DIAMETER (D) is the diameter of the pitch circle. In
parallel shaft gears, the pitch diameters can be determined
directly from the center distance and the number of teeth.
WHOLE DEPTH (ht) is the total depth of a tooth space, equal
to addendum plus dedendum, equal to the working depth plus
variance.
PRESSURE ANGLE (ø) is the angle at a pitch point between
the line of pressure which is normal to the tooth surface, and the
plane tangent to the pitch surface. In involute teeth, pressure
angle is often described also as the angle between the line of
action and the line tangent to the pitch circle. Standard pressure
angles are established in connection with standard gear-tooth
proportions.
WORKING DEPTH (hk) is the depth of engagement of two
gears; that is, the sum of their addendums.
TOOTH PARTS
PINION
PINION
PITCH CIRCLE
LINE OF ACTION
OUTSIDE
DIA.
PRESSURE
ANGLE
TOOTH PROFILE
(INVOLUTE)
BASE CIRCLE
PITCH CIRCLE
WHOLE DEPTH
WORKING
DEPTH
CLEARANCE
ADDENDUM
DEDENDUM
CIRCULAR TOOTH
THICKNESS
ROOT
DIA.
CIRCULAR
PITCH
GEAR
GEAR
138
Gear Catalog
ROOT (TOOTH)
FILLET
CENTER
DISTANCE
ENGINEERING INFORMATION
SPUR GEARS
INVOLUTE FORM
Gear teeth could be manufactured with a wide variety of
shapes and profiles. The involute profile is the most commonly
used system for gearing today, and all Boston spur and helical
gears are of involute form.
An involute is a curve that is traced by a point on a taut cord
unwinding from a circle, which is called a BASE CIRCLE. The
involute is a form of spiral, the curvature of which becomes
straighter as it is drawn from a base circle and eventually
would become a straight line if drawn far enough.
EA
CIRCL
I
–
TE
LU
O
NV
An involute drawn from a larger base circle will be less curved
(straighter) than one drawn from a smaller base circle.
Similarly, the involute tooth profile of smaller gears is considerably curved, on larger gears is less curved (straighter), and is
straight on a rack, which is essentially an infinitely large gear.
CI
E
E–
C
EB
CL
A
CL
IR
R
INVOLUT
C
IR
CLE
B
Involute gear tooth forms and standard tooth proportions are
specified in terms of a basic rack which has straight-sided
teeth, for involute systems.
20 TEETH
48 TEETH
RACK
Gear Catalog
139
ENGINEERING INFORMATION
SPUR GEARS
DIAMETRAL PITCH SYSTEM
All stock gears are made in accordance with the diametral
pitch system. The diametral pitch of a gear is the number of
teeth in the gear for each inch of pitch diameter. Therefore, the
diametral pitch determines the size of the gear tooth.
PRESSURE ANGLE
Pressure angle is the angle at a pitch point between the line of
pressure which is normal to the tooth surface, and the plane tangent to the pitch surface. The pressure angle, as defined in this
catalog, refers to the angle when the gears are mounted on their
standard center distances.
Boston Gear manufactures both 14-1/2° and 20° PA, involute,
full depth system gears. While 20°PA is generally recognized
as having higher load carrying capacity, 14-1/2°PA gears have
extensive use. The lower pressure angle results in less
change in backlash due to center distance variation and concentricity errors. It also provides a higher contact ratio and
consequent smoother, quieter operation provided that undercut of teeth is not present.
TOOTH DIMENSIONS
For convenience, Tooth Proportions of various standard
diametral pitches of Spur Gears are given below.
Circular
Diametral
Pitch
Pitch
(Inches)
3
4
5
6
8
10
12
16
20
24
32
48
64
140
1.0472
.7854
.6283
.5236
.3927
.3142
.2618
.1963
.1571
.1309
.0982
.0654
.0491
Thickness
of Tooth
Depth to be
on Pitch
Cut in Gear
Line
(Inches)
Addendum
(Inches) (Hobbed Gears)
(Inches)
.5236
.3927
.3142
.2618
.1963
.1571
.1309
.0982
.0785
.0654
.0491
.0327
.0245
Gear Catalog
.7190
.5393
.4314
.3565
.2696
.2157
.1798
.1348
.1120
.0937
.0708
.0478
.0364
.3333
.2500
.2000
.1667
.1250
.1000
.0833
.0625
.0500
.0417
.0312
.0208
.0156
ENGINEERING INFORMATION
SPUR GEARS
BACKLASH
SPUR GEAR FORMULAS
Stock spur gears are cut to operate at standard center distances. The standard center distance being defined by:
FOR FULL DEPTH INVOLUTE TEETH
Standard Center Distance = Pinion PD + Gear PD
2
When mounted at this center distance, stock spur gears will
have the following average backlash:
Diametral
Pitch
Backlash
(Inches)
Diametral
Pitch
Backlash
(Inches)
3
4
5
6
7
.013
.010
.008
.007
.006
8-9
10-13
14-32
33-64
.005
.004
.003
.0025
To Obtain
Diametral Pitch (P)
Circular Pitch (p)
Pitch Diameter (D)
An increase or decrease in center distance will cause an
increase or decrease in backlash.
Since, in practice, some deviation from the theoretical standard center distance is inevitable and will alter the backlash,
such deviation should be as small as possible. For most applications, it would be acceptable to limit the deviation to an
increase over the nominal center distance of one half the average backlash. Varying the center distance may afford a practical means of varying the backlash to a limited extent.
The approximate relationship between center distance and
backlash change of 14-1/2° and 20° pressure angle gears is
shown below:
For 14-1/2°–Change in Center Distance = 1.933 x Change in Backlash
For 20°
–Change in Center Distance = 1.374 x Change in Backlash
From this, it is apparent that a given change in center distance, 14-1/2° gears will have a smaller change in backlash
than 20° gears. This fact should be considered in cases where
backlash is critical.
Base Diameter (Db)
Number of Teeth (N)
Tooth Thickness (t)
@Pitch Diameter (D)
Addendum (a)
Outside
Diameter (Do)
Whole Depth (ht)
(20P & Finer)
Whole Depth (ht)
(Courser than 20P)
Working Depth (h k)
Clearance (c)
Dedendum (b)
UNDERCUT
When the number of teeth in a gear is small, the tip of the mating
gear tooth may interfere with the lower portion of the tooth profile. To prevent this, the generating process removes material at
this point. This results in loss of a portion of the involute adjacent
to the tooth base, reducing tooth contact and tooth strength.
On 14-1/2°PA gears undercutting occurs where a number of
teeth is less than 32 and for 20°PA less than 18. Since this
condition becomes more severe as tooth numbers decrease, it
is recommended that the minimum number of teeth be 16 for
14-1/2°PA and 13 for 20°PA.
In a similar manner INTERNAL Spur Gear teeth may interfere
when the pinion gear is too near the size of its mating internal
gear. The following may be used as a guide to assure proper
operation of the gear set. For 14-1/2°PA, the difference in
tooth numbers between the gear and pinion should not be less
than 15. For 20°PA the difference in tooth numbers should not
be less than 12.
Having
Formula
Circular Pitch (p)
Contact Ratio (Mc)
P = 3.1416
p
Number of Teeth (N) & P = N
Pitch Diameter (D)
D
Number of Teeth (N) & P = N + 2 (Approx.)
Outside Diameter (Do)
Do
Diametral Pitch (P)
p = 3.1416
P
Number of Teeth (N) & D = N
Diametral Pitch (P)
P
Outside Diameter (Do) &
D = Do – 2
Diametral Pitch (P)
P
Pitch Diameter (D) and Db = Dcosø
Pressure Angle (ø)
Diametral Pitch (P) &
N=PxD
Pitch Diameter (D)
Diametral Pitch (P)
t = 1.5708
P
Diametral Pitch (P)
a=1
P
Pitch Diameter (D) &
Do = D + 2a
Addendum (a)
Diametral Pitch (P)
ht = 2.2 + .002
P
2.157
Diametral Pitch (P)
ht =
P
Addendum (a)
hk = 2(a)
Whole Depth (ht)
c = ht – 2a
Addendum (a)
Whole Depth (ht) &
b = ht – a
Addendum (a)
Outside Radii, Base
Radii, Center Distance
and Pressure Angle+C.P.
Ro2 – Rb2 + r o2 – r b2 – Csinø*
MM
c=
c=
Ppccosø
Pitch Diameter (D)
and Dedendum (b)
Center Distance (C) Pitch Diameter (D) or
No. of Teeth and Pitch
Root Diameter (Dr)
Dr = D – 2b
C = D1 + D2
2
or N1 + N2
2P
*Ro = Outside Radius, Gear
ro = Outside Radius, Pinion
Rb = Base Circle Radius, Gear
rb = Base Circle Radius, Pinion
p
f
a
PITCH
LINE
hk h
t
b
t
c
rf
a
b
c
hk
ht
p
rf
t
f
= ADDENDUM
= DEDENDUM
= CLEARANCE
= WORKING DEPTH
= WHOLE DEPTH
= CIRCULAR PITCH
= FILLET RADIUS
= CIRCULAR TOOTH THICKNESS
= PRESSURE ANGLE
Gear Catalog
141
ENGINEERING INFORMATION
SPUR GEARS
LEWIS FORMULA (Barth Revision)
TABLE II–VALUES OF SAFE STATIC STRESS (s)
Gear failure can occur due to tooth breakage (tooth stress) or
surface failure (surface durability) as a result of fatigue and
wear. Strength is determined in terms of tooth-beam stresses
for static and dynamic conditions, following well established formula and procedures. Satisfactory results may be obtained by
the use of Barth’s Revision to the Lewis Formula, which considers beam strength but not wear. The formula is satisfactory for
commercial gears at Pitch Circle velocities of up to 1500 FPM. It
is this formula that is the basis for all Boston Spur Gear ratings.
METALLIC SPUR GEARS
600
W = SFY
P 600 + V
W = Tooth Load, Lbs. (along the Pitch Line)
S = Safe Material Stress (static) Lbs. per Sq. In. (Table II)
F = Face Width, In.
Y = Tooth Form Factor (Table I)
P = Diametral Pitch
D = Pitch Diameter
V = Pitch Line Velocity, Ft. per Min. = .262 x D x RPM
For NON-METALLIC GEARS, the modified Lewis Formula
shown below may be used with (S) values of 6000 PSI for
Phenolic Laminated material.
Material
(s) Lb. per Sq. In.
Plastic ........................................................................
5000
Bronze ........................................................................ 10000
Cast Iron ..................................................................... 12000
.20 Carbon (Untreated) ................................... 20000
.20 Carbon (Case-hardened) .......................... 25000
Steel .40 Carbon (Untreated) ................................... 25000
.40 Carbon (Heat-treated)............................... 30000
.40 C. Alloy (Heat-treated) .............................. 40000
{
Max. allowable torque (T) that should be imposed on a gear
will be the safe tooth load (W) multiplied by D or T = W x D
2
2
The safe horsepower capacity of the gear (at a given RPM) can
be calculated from HP = T x RPM or directly from (W) and (V);
63,025
WV
HP =
33,000
For a known HP, T = 63025 x HP
RPM
150 + .25
W = SFY
P 200 + V
TABLE I TOOTH FORM FACTOR (Y)
142
Number of Teeth
14-1/2° Full
Depth Involute
20° Full
Depth Involute
10
11
12
13
14
15
16
17
18
19
20
22
24
26
28
30
32
34
36
38
40
45
50
55
60
65
70
75
80
90
100
150
200
300
Rack
0.176
0.192
0.210
0.223
0.236
0.245
0.255
0.264
0.270
0.277
0.283
0.292
0.302
0.308
0.314
0.318
0.322
0.325
0.329
0.332
0.336
0.340
0.346
0.352
0.355
0.358
0.360
0.361
0.363
0.366
0.368
0.375
0.378
0.382
0.390
0.201
0.226
0.245
0.264
0.276
0.289
0.295
0.302
0.308
0.314
0.320
0.330
0.337
0.344
0.352
0.358
0.364
0.370
0.377
0.383
0.389
0.399
0.408
0.415
0.421
0.425
0.429
0.433
0.436
0.442
0.446
0.458
0.463
0.471
0.484
Gear Catalog
ENGINEERING INFORMATION
HELICAL GEARS
GEAR NOMENCLATURE
HELIX ANGLE—
The information contained in the Spur Gear section is also
pertinent to Helical Gears with the addition of the following:
HELIX ANGLE (y) is the angle between any helix and an element of its cylinder. In helical gears, it is at the pitch diameter
unless otherwise specified.
LEAD (L) is the axial advance of a helix for one complete turn,
as in the threads of cylindrical worms and teeth of helical
gears.
NORMAL DIAMETRAL PITCH (Pn) is the Diametral Pitch as
calculated in the normal plane.
HAND – Helical Gears of the same hand operate at right
angles, see Fig. 1
Helical Gears of opposite hands run on parallel
shafts. Fig. 2
NORMAL
PLANE
AXIAL PLANE
pn
HELIX
ANGLE
Y
p
p = AXIAL CIRCULAR PITCH
pn = NORMAL CIRCULAR PITCH
TWO
RIGHT-HAND
HELICAL GEARS
TWO
LEFT-HAND
HELICAL GEARS
Figure 1
LEFT HAND HELICAL GEAR
LEFT-HAND AND
RIGHT-HAND
HELICAL GEARS
Figure 2
RIGHT HAND HELICAL GEAR
All Boston Helicals are cut to the Diametral Pitch system,
resulting in a Normal Pitch which is lower in number than the
Diametral Pitch.
INVOLUTE—The Helical tooth form is involute in the plane of
rotation and can be developed in a manner similar to that of
the Spur Gear. However, unlike the Spur Gear, which may be
viewed as two-dimensional, the Helical Gear must be viewed
as three-dimensional to show change in axial features.
Helical gears offer additional benefits relative to Spur Gears,
those being:
• Improved tooth strength due to the elongated helical wraparound.
• Increased contact ratio due to the axial tooth overlap.
• Helical Gears thus tend to have greater load carrying capacity than Spur Gears of similar size.
• Due to the above, smoother operating characteristics are
apparent.
The teeth of a LEFT HAND
Helical Gear lean to the left
when the gear is placed flat on
a horizontal surface.
The teeth of a RIGHT HAND
Helical Gear lean to the right
when the gear is placed flat on
a horizontal surface.
Gear Catalog
143
ENGINEERING INFORMATION
HELICAL GEARS
HELICAL GEAR FORMULAS
To Obtain
Having
Formula
Number of Teeth (N) &
Pitch Diameter (D)
Normal Diametral Pitch (Pn)
Helix Angle (y)
Number
of Teeth (N) &
Pitch Diameter (D)
Transverse Diametral Pitch (P)
Normal
Transverse Diametral Pitch (P)
Diametral Pitch (PN) & Helix Angle (y)
Normal Circular
Normal Diametral Pitch (PN)
Tooth Thickness (t)
Transverse
Diametral Pitch (P)
Circular Pitch (pt)
(Transverse)
Normal
Transverse
Circular Pitch (pn)
Circular Pitch (p)
Pitch Diameter and
Lead (L)
Pitch Helix Angle
Transverse
Diametral Pitch (P)
P=N
D
HELICAL GEAR LEWIS FORMULA
The beam strength of Helical Gears operating on parallel shafts
can be calculated with the Lewis Formula revised to compensate for the difference between Spur and Helical Gears, with
modified Tooth Form Factors Y.
P = PNCosy
D=N
P
P
Cosy
t = 1.5708
PN
p =¹
t P
PN =
pn= ptCosy
L = ¹D
Tany
TRANSVERSE VS. NORMAL DIAMETRAL PITCH FOR
BOSTON 45° HELICAL GEARS
P
Transverse
Diametral Pitch
PN
Normal
Diametral Pitch
24
20
16
12
10
8
6
33.94
28.28
22.63
16.97
14.14
11.31
8.48
600
W = SFY
PN 600 + V
W = Tooth Load, Lbs. (along the Pitch Line)
S = Safe Material Stress (static) Lbs. per Sq. In. (Table III)
F = Face Width, Inches
Y =Tooth Form Factor (Table IV)
PN = Normal Diametral Pitch
(Refer to Conversion Chart)
D = Pitch Diameter
V = Pitch Line Velocity, Ft. Per Min. = .262 x D x RPM
TABLE III–VALUES OF SAFE STATIC STRESS (S)
Material
(s) Lb. per Sq. In.
Bronze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10000
Cast Iron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12000
.20 Carbon (Untreated) . . . . . . . . . . . . . . . .
20000
.20 Carbon (Case-hardened) . . . . . . . . . . .
25000
Steel .40 Carbon (Untreated) . . . . . . . . . . . . . . . .
25000
.40 Carbon (Heat-treated) . . . . . . . . . . . . . .
30000
.40 C. Alloy (Heat-treated) . . . . . . . . . . . . .
40000
{
TABLE IV—VALUES OF TOOTH FORM FACTOR (Y)
No. of
Teeth
8
9
10
12
15
16
18
20
24
FOR 14-1/2°PA—45° HELIX ANGLE GEAR
Factor
No. of
Y
Teeth
.295
25
.305
30
.314
32
.327
36
.339
40
.342
48
.345
50
.352
60
.358
72
Factor
Y
.361
.364
.365
.367
.370
.372
.373
.374
.377
HORSEPOWER AND TORQUE
Max. allowable torque (T) that should be imposed on a gear
will be the safe tooth load (W) multiplied by D or T = W x D
2
2
The safe horsepower capacity of the gear (at a given RPM) can
be calculated from HP = T x RPM or directly from (W) and (V);
63,025
WV
HP =
33,000
For a known HP, T = 63025 x HP
RPM
144
Gear Catalog
ENGINEERING INFORMATION
HELICAL GEARS
When Helical gears are operated on other than Parallel shafts,
the tooth load is concentrated at a point, with the result that
very small loads produce very high pressures. The sliding
velocity is usually quite high and, combined with the concentrated pressure, may cause galling or excessive wear, especially if the teeth are not well lubricated. For these reasons,
the tooth load which may be applied to such drives is very limited and of uncertain value, and is perhaps best determined by
trial under actual operating conditions. If one of the gears is
made of bronze, the contact area and thereby the load carrying capacity, may be increased, by allowing the gears to “runin” in their operating position, under loads which gradually
increase to the maximum expected.
THRUST LOADS
As a result of the design of the Helical Gear tooth, an axial or
thrust load is developed. Bearings must be adequate to
absorb this load. The thrust load direction is indicated below.
The magnitude of the thrust load is based on calculated
Horsepower.
126,050 x HP
Axial Thrust Load =
RPM x Pitch Diameter
Boston Helicals are all 45° Helix Angle, producing a tangential
force equal in magnitude to the axial thrust load. A separating
force is also imposed on the gear set based on calculated
Horsepower.
Separating Load = Axial Thrust Load x .386
Above formulae based on Boston 45° Helix Angle and 14-1/2°
Normal Pressure Angle.
RIGHT
HAND
DRIVER
THRUST
BEARING
DRIVER
LEFTHAND
DRIVER
THRUST
BEARING
DRIVER
LEFT-HAND
DRIVER
DRIVER
THRUST
BEARING
RIGHT-HAND
See page 118 for hardened and ground Thrust Washers.
Gear Catalog
145
ENGINEERING INFORMATION
MITER AND BEVEL GEARS
Gear geometry for both straight and spiral tooth Miter and
Bevel gears is of a complex nature and this text will not
attempt to cover the topic in depth.
Similar in nature to Helical gearing, Spiral Miters and Bevels
must be run with a mating pinion or gear of opposite hand.
The basic tooth form is a modification to the involute form and
is the common form used in production today. All Boston standard stock Miter and Bevel gears are manufactured with a 20°
Pressure Angle. Bevel gears are made in accordance with
A.G.M.A. specifications for long and short Addendum system
for gears and pinions (pinion is cut long Addendum) which
serves to reduce the amount of pinion tooth undercut and to
nearly equalize the strength and durability of the gear set.
NOMENCLATURE
Nomenclature may best be understood by means of graphic
representation depicted below:
The teeth of a Left Hand
gear lean to the left when
the gear is placed on a horizontal surface.
The teeth of a Right Hand
gear lean to the right when
the gear is placed flat on a
horizontal surface.
MOUNTING DISTANCE
PITCH APEX
TO CROWN
NE
Straight Tooth Miter and Bevel Gear Formulas
PITCH
T
CO
CROWN
TO BACK
S
DI
FACE
ANGLE
All Boston Spiral Miter and Bevel gears are made with 35° spiral angles with all pinions cut left hand.
Formula
APEX
ROOT
ANGLE
CE
FA
PITCH
ANGLE
ADDENDUM
DEDENDUM
WHOLE DEPTH
To Obtain
Having
Pitch
Diameter (D,d)
Whole
Depth (hT)
No. of Teeth and
Diametral Pitch (P)
d=n
P
Diametral Pitch (P)
hT =
Addendum (a)
Diametral Pitch (P)
Dedendum (b)
PITCH DIA.
ST
Clearance
BA
CK
CO
NE
DI
O.D.
Circular Tooth
Thickness (t)
Pitch Angle
Outside
Diameter
(Do, do)
Stock gears are cut to operate on an exact Mounting Distance
with the following average backlash:
146
Diametral Pitch
Backlash (Inches)
4
5
6
8
10
12-20
24-48
.008
.007
.006
.005
.004
.003
.002
Gear Catalog
Whole Depth (hT) &
Addendum (a)
Whole Depth (nT) &
Addendum (a)
Diametral Pitch (P)
Pinion
Gear
D=n
P
2.188
2.188
+ .002 hT =
+ .002
P
P
1
1
a=
a=
P
P
b = hT – a
b = hT – a
c = hT – 2a
c = hT – 2a
t=
1.5708
P
t=
1.5708
P
Number of Teeth In
Pinion (Np) and
Lp = tan -1 Np
LG = 90 – Lp
Gear (NG)
NG
Pinion & Gear Pitch
Diameter (Dp + DG)
do=Dp+2a(cos Lp) Do=DG+2a(cos LG)
Addendum (a) &
Pitch Angle (Lp + LG)
( )
ENGINEERING INFORMATION
MITER AND BEVEL GEARS
Straight tooth bevel (and miter) gears are cut with generated
tooth form having a localized lengthwise tooth bearing known
as the “Coniflex”® tooth form. The superiority of these gears
over straight bevels with full length tooth bearing, lies in the
control of tooth contact. The localization of contact permits
minor adjustment of the gears in assembly and allows for
some displacement due to deflection under operating loads,
without concentration of the load on the end of the tooth. This
results in increased life and quieter operation.
Incorrect
If Mounting Distance of one or both gears is made less than
dimension specified, the teeth may bind. Excessive wear or
breakage can result. Drawing below shows gears mounted
incorrectly with the Mounting Distance too short for one gear.
PINION APEX DEFLECTED
OR ASSEMBLED OFF
CENTER
PINION APEX
ON CENTER
MOUNTING
DISTANCE
TOO SMALL
TOOTH BEARING CENTRAL
TOOTH BEARING SHIFTED
OFF CENTER
BUT STILL SAFE
(A)
Incorrect
(B)
ILLUSTRATION OF LOCALIZED TOOTH BEARING
IN STRAIGHT BEVEL CONIFLEX® GEARS
Boston Gear Bevel and Miter Gears will provide smooth, quiet
operation and long life when properly mounted and lubricated.
There are several important considerations in mounting these
gears.
If Mounting Distance of either gear is made longer than dimension specified, as shown in drawing below, the gears will not
be in full mesh on a common pitch line and may have excessive backlash. Excessive backlash or play, if great enough,
can cause a sudden impulse or shock load in starting or
reversing which might cause serious tooth damage.
1. All standard stock bevel and miter gears must be mounted
at right angles (90°) for proper tooth bearing.
2. Mounting Distance (MD) is the distance from the end of the
hub of one gear to the center line of its mating gear. When
mounted at the MD specified, the gears will have a proper
backlash and the ends of the gear teeth will be flush with
each other (see drawings).
MOUNTING
DISTANCE
TOO GREAT
3. All bevel and miter gears develop radial and axial thrust
loads when transmitting power. See page 148. These
loads must be accommodated by the use of bearings.
MOUNTING
DISTANCE
MOUNTING
DISTANCE
MOUNTING
DISTANCE
MOUNTING
DISTANCE
®Registered in the U.S. Patent Office.
Gear Catalog
147
ENGINEERING INFORMATION
MITER AND BEVEL BEARS
TOOTH STRENGTH (Straight Tooth)
The beam strength of Miter and Bevel gears (straight tooth)
may be calculated using the Lewis Formula revised to compensate for the differences between Spur and Bevel gears. Several
factors are often combined to make allowance for the tooth
taper and the normal overhung mounting of Bevel gears.
THRUST
The axial thrust loads developed by straight tooth miter and
bevel gears always tend to separate the gears.
600
.75
W = SFY
P 600 + V
W=
S =
F =
Y =
P =
D =
V =
Tooth Load, Lbs. (along the Pitch Line)
Safe Material Stress (static) Lbs. per Sq. In. (Table 1)
Face Width, In.
Tooth Form Factor (Table I)
Diametral Pitch
Pitch Diameter
Pitch Line Velocity, Ft. per Min. = .262 x D x RPM
For Spiral Bevel and Miter Gears, the direction of axial thrust
loads developed by the driven gears will depend upon the
hand and direction of rotation. Stock Spiral Bevel pinions cut
Left Hand only, Gears Right Hand only.
TABLE I VALUES OF SAFE STATIC STRESS (s)
Material
(s) Lb. per Sq. In.
Plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5000
Bronze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10000
Cast Iron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12000
.20 Carbon (Untreated) . . . . . . . . . . . . . . . . . . . . . . 20000
.20 Carbon (Case-hardened) . . . . . . . . . . . . . . . . . . 25000
Steel .40 Carbon (Untreated) . . . . . . . . . . . . . . . . . . . . . . 25000
.40 Carbon (Heat-treated) . . . . . . . . . . . . . . . . . . . . 30000
.40 C. Alloy (Heat-treated) . . . . . . . . . . . . . . . . . . . . 40000
{
TABLE II TOOTH FORM FACTOR (Y)
The magnitude of the thrust may be calculated from the formulae below, based on calculated HP, and an appropriate
Thrust Bearing selected.
20°P.A.—LONG ADDENDUM PINIONS SHORT ADDENDUM GEARS
No.
Ratio
Teeth
1
1.5
2
3
4
6
Pinion Pin. Gear Pin. Gear Pin. Gear Pin. Gear Pin. Gear Pin. Gear
12
14
16
18
20
24
28
32
36
40
—
—
.333
.342
.352
.371
.386
.399
.408
.418
—
.349
.367
.383
.402
.424
.446
.462
.477
—
—
.292
.311
.328
.339
.364
.383
.396
.408
—
.345
.367
.386
.402
.418
.443
.462
.487
.518
.543
.283
.301
.320
.336
.349
.368
.386
.402
.415
.424
.355
.377
.396
.415
.427
.471
.509
.540
.569
.594
.302
.317
.333
.346
.355
.377
.396
.412
.424
.434
.358
.380
.402
.427
.456
.506
.543
—
—
—
.305
.323
.339
.364
.386
.405
.421
—
—
—
.361
.405
.443
.474
.500
—
—
—
—
—
.324
.352
.377
.399
.421
—
—
—
—
—
Straight Bevels and Miters
Gear Thrust =
126,050 x HP
x tan a cos b
RPM x Pitch Diameter
Pinion Thrust =
126,050 x HP
x tan a sin b
RPM x Pitch Diameter
Spiral Bevels and Miters
Thrust values for Pinions and Gears are given for four possible combinations.
R.H. SPIRAL
TP =
126,050 x HP tana sinb
– tang cosb
cosg
RPM x D
TG =
126,050 x HP tana cosb
+ tang sinb
cosg
RPM x D
TP =
126,050 x HP tana sinb
+ tang cosb
cosg
RPM x D
TG =
126,050 x HP tana cosb
+ tang sinb
cosg
RPM x D
CLOCKWISE
HORSEPOWER AND TORQUE
Max. allowable torque (T) that should be imposed on a gear
will be the safe tooth load (W) multiplied by D or T = W x D
2
2
The safe horsepower capacity of the gear (at a given RPM) can
be calculated from HP = T x RPM or directly from (W) and (V);
63,025
HP = WV
33,000
For a known HP, T = 63025 x HP
RPM
L.H. SPIRAL
C. CLOCKWISE
L.H. SPIRAL
CLOCKWISE
R.H. SPIRAL
C. CLOCKWISE
a = Tooth Pressure Angle
b = 1/2 Pitch Angle
NP
Pitch Angle = tan-1 N
G
g = Spiral Angle = 35°
( )
148
Gear Catalog
ENGINEERING INFORMATION
WORMS AND WORM GEARS
Boston standard stock Worms and Worm Gears are used for
the transmission of motion and/or power between non-intersecting shafts at right angles (90°). Worm Gear drives are
considered the smoothest and quietest form of gearing when
properly applied and maintained. They should be considered
for the following requirements:
HIGH RATIO SPEED REDUCTION
LIMITED SPACE
RIGHT ANGLE (NON-INTERSECTING) SHAFTS
GOOD RESISTANCE TO BACK DRIVING
General nomenclature having been applied to Spur and
Helical gear types, may also be applied to Worm Gearing with
the addition of Worm Lead and Lead Angle, Number of
Threads (starts) and Worm Gear Throat diameter.
THRUST LOADS
As is true with Helical and Bevel gearing, Worm gearing, when
operating, produces Thrust loading. The Chart below indicates
the direction of thrust of Worms and Worm Gears when they
are rotated as shown. To absorb this thrust loading, bearings
should be located as indicated.
RIGHT-HAND
DRIVEN
DRIVEN
DRIVER
DRIVER
THRUST BEARING
HOW TO TELL A LEFT-HAND
OR RIGHT-HAND
WORM OR WORM GEAR
DRIVEN
DRIVEN
LEFT-HAND
DRIVEN
DRIVEN
DRIVER
DRIVER
THRUST BEARING
DRIVEN
DRIVEN
Threads of LEFT-HAND lean to the
Left when standing on either end:
EFFICIENCY
The efficiency of a worm gear drive depends on the lead angle
of the worm. The angle decreases with increasing ratio and
worm pitch diameter. For maximum efficiency the ratio should
be kept low.
Due to the sliding action which occurs at the mesh of the
Worm and Gear, the efficiency is dependent on the Lead
Angle and the Coefficient of the contacting surface. A common formula for estimating efficiency of a given Worm Gear
reduction is:
EFFICIENCY = E = Tang (1 – f tang)
f + tang
Threads of RIGHT-HAND lean to the
Right when standing on either end:
where g = Worm Lead Angle
f = Coefficient of Friction
For a Bronze Worm Gear and hardened Steel Worm, a
Coefficient of Friction in the range of .03/.05 may be assumed
for estimated value only.
Gear Catalog
149
ENGINEERING INFORMATION
WORMS AND WORM GEARS
WORM AND WORM GEAR FORMULAS
To Obtain
Having
WORM GEAR BACK-DRIVING
Formula
p = 3.1416
P
P = 3.1416
p
Circular Pitch (p)
Diametral Pitch (P)
Diametral Pitch (P)
Circular Pitch (p)
Lead (of Worm) (L)
Number of Threads in
Worm & Circular Pitch (p)
L = p(No. of Threads)
Addendum (a)
Diametral Pitch (P)
a=1
P
Pitch Diameter (D)
of Worm (DW)
Pitch Diameter of
Worm Gear (DG)
Center Distance
Between Worm &
Worm Gear (CD)
Outside Diameter (d o) &
Addendum (a)
Circular Pitch (p) &
Number of Teeth (N)
Pitch Diameter
of Worm (d w) &
Worm Gear (DG)
Circular Pitch (p)
Whole Depth of
Teeth (hT)
Bottom Diameter
of Worm (Dr)
Throat Diameter
of Worm Gear (DT)
Lead Angle of
Worm (g)
Ratio
Gear O.D. (DO)
Diametral Pitch (P)
Whole Depth (h T) &
Outside Diameter (d w)
Pitch Diameter of Worm
Gear (D) & Addendum (a)
Pitch Diameter of Worm(D)
& The Lead (L)
No. of Teeth on Gear (NG)
and Number of
Threads on Worm
Throat Dia. (DT)
and Addendum (a)
RATING
The high rate of sliding friction that takes place at the mesh of
the Worm and Gear results in a more complex method of rating these Gears as opposed to the other Gear types. Material
factors, friction factors and velocity factors must all be considered and applied to reflect a realistic durability rating.
DW = do – 2a
DG =
NGp
3.1416
CD = dw + DG
2
hT = .6866 p
hT = 2.157
P
dr = do – 2hT
DT = DG + 2a
L
g = tan-1 3.1416d
NG
Ratio =
No. of Threads
(
)
DO = DT + .6a
SELF-LOCKING ABILITY
There is often some confusion as to the self-locking ability of a
worm and gear set. Boston worm gear sets, under no condition should be considered to hold a load when at rest. The
statement is made to cover the broad spectrum of variables
effecting self-locking characteristics of a particular gear set in
a specific application. Theoretically, a worm gear will not back
drive if the friction angle is greater than the worm lead angle.
However, the actual surface finish and lubrication may reduce
this significantly. More important, vibration may cause motion
at the point of mesh with further reduction in the friction angle.
Generally speaking, if the worm lead angle is less than 5°,
there is reasonable expectation of self-locking. Again, no guarantee should be made and customer should be advised. If
safety is involved, a positive brake should be used.
150
Gear Catalog
This is the converse of self-locking and refers to the ability of
the worm gear to drive the worm. The same variables exist,
making it difficult to predict. However, our experience indicates
that for a hardened worm and bronze gear properly manufactured, mounted and lubricated, back-driving capability may be
expected, if the lead angle is greater than 11°. Again, no guarantee is made and the customer should be so advised.
ENGINEERING INFORMATION
COUPLINGS
UNIVERSAL JOINTS
ALIGNMENT
MOUNTING
Alignment of Boston couplings should be performed by the following steps to meet lateral and angular misalignment specifications below.
A single universal joint (rotating at uniform speed) operating at
an angle will introduce periodic variations of angular velocity to
the driven shaft. These cyclic speed fluctuations (two per revolution) cause vibration, higher shaft stresses and bearing loads
which will be more severe with larger angles of operation.
1. Align shafts and supports to give minimum lateral and
angular misalignment.
2. Assemble coupling halves to shaft.
3. Slide couplings together and check lateral misalignment
using straight edge and feeler gauge over coupling outside
diameter (On BF Series couplings, spider must be
removed.) This should be within specifications below.
4. Lock couplings on shaft and check distance using feeler
gauges between drive lug on one half and space between
on other coupling half. Rotate coupling and check gap at a
minimum of 3 other coupling positions. The difference
between any two readings should be within specifications
below.
FEELER GAUGE
FEELER GAUGE
LATERAL MISALIGNMENT
The detrimental effects of these rotational deviations can be
reduced, and uniform speed restored by using two joints (and
an intermediate shaft) to connect shafts at an angle or misaligned in a parallel direction.
ANGULAR MISALIGNMENT
For connecting shafts in the same plane the joints should be
arranged to operate at equal angles and with the bearing pins
of the yokes on the intermediate shaft in line with each other.
LUBRICATION
MISALIGNMENT TOLERANCES
Coupling Series
FC—Bronze Insert
FC—Urethane Insert
FC—Rubber Insert
BF
BG (Shear Type)
FA
FCP (Plastic)
PIN and BLOCK TYPE
Lateral
Angular
.001
.002
.002
.002
1/32
.002
.003
See Chart
below
1-1/2°
2°
2°
3°
FC SERIES ANGULAR MISALIGNMENT
Chart reflects maximum angular misalignment of 1-1/2° for
rubber, 1° for urethane and 1/2° for bronze.
MAXIMUM READING DIFFERENTIAL
Size
Rubber
Insert
Urethane
FC12
FC15
FC20
FC25
FC30
FC38
FC45
.033
.039
.053
.066
.078
.097
.117
.022
.026
.035
.044
.052
.065
.078
Bronze
.011
.013
.018
.022
.026
.032
.039
These universal joints are not lubricated when shipped.
Many applications are considered severe when in harsh environments and when a combination of speed, dirt contamination and inaccessible locations make it impractical to maintain
proper lubrication.
It is in these instances when the Boot Kits become a desirable
alternative. For satisfactory performance, all booted joints
should be used with a LITH-EP-000 grease for an ambient
temperature range of 40° to 225°F.
VOLUME OF LUBRICATION FOR BOOTED JOINTS
Size
Volume
(Ozs.)
Size
Volume
(Ozs.)
37
50
62
75
87
.4
.5
.75
1.0
1.5
100
125
150
175
200
2.0
3.5
4.5
7.0
15.0
Size
Volume
(Ozs.)
250
300
400
25.0
30.0
50.1
Note: Joints should be initially lubricated with a 90 weight oil before being
packed with grease.
FORGED AND CAST TYPE
Universal Joints are not lubricated when shipped.
Lubricate these joints with a Lith EP-2 grease or equivalent.
The center cross of these joints holds a generous supply of
lubricant which is fed to the bearings by centrifugal action.
Light-duty, low-angle operation may require only occasional
lubrication. For high-angle, high-speed operation or in extreme
dirt or moist conditions, daily regreasing may be required.
Gear Catalog
151
ENGINEERING INFORMATION
GENERAL
MOUNTING
ALTERATIONS
SPUR & HELICAL
Boston Gear Service Centers are equipped to alter catalog
sprockets (rebore, keyway, setscrew, etc.). For customers,
choosing to make their own alterations, the guidelines listed
below should be beneficial. Alterations to hardened gears
should not be made without consultation with factory.
In setting up for reboring the most important consideration is
to preserve the accuracy of concentricity and lateral runout
provided in the original product. There are several methods for
accomplishing this. One procedure is: mount the part on an
arbor, machine hub diameter to provide a true running surface, remove from arbor and chuck on the hub diameter,
check face and bore runout prior to reboring. As a basic rule of
thumb, the maximum bore should not exceed 60% of the Hub
Diameter and depending on Key size should be checked for
minimum wall thickness. A minimum of one setscrew diameter
over a keyway is considered adequate.
Boston Gear offers a service for hardening stock sprockets.
This added treatment can provide increased horsepower capacity with resultant longer life and/or reduction in size and weight.
Customers wishing to do the hardening operation should refer
to “Materials” below for information.
For proper functioning gears, gears must be accurately
aligned and supported by a shaft and bearing system which
maintains alignment under load. Deflection should not exceed
.001 inch at the tooth mesh for general applications. The tolerance on Center Distance normally should be positive to avoid
possibility of gear teeth binding. Tolerance value is dependent
on acceptable system backlash. As a guide for average application, this tolerance might vary from .002 for Boston Gear’s
fine pitch gears to .005 for the coarsest pitch.
WORMS AND WORM GEAR
It is important that the mounting assures the central plane of
the Worm gear passes essentially through the axis of the
Worm. This can be accomplished by adjusting the Worm Gear
axially. Boston Worm Gears are cut to close tolerancing of the
Center Line of the Gear tooth to the flush side of the Gear.
When properly mounted Worm Gears will become more efficient after initial break-in period.
HOW WORM GEARS “ADJUST” THEMSELVES
The gear in a worm gear reducer is made of a soft bronze
material. Therefore, it can cold-work and wear-in to accommodate slight errors in misalignment.
Evolution of Contact in a Worm Gear
Worm
rotation
Entering
side
Leaving
side
Initially, contact is concentrated on the leaving side of
the worm.
After several hours or running under load, gear has
cold-worked to spread area
of contact.
After many hours of operation, contact has spread to
cover the entire working
area of the tooth.
152
Gear Catalog
LUBRICATION
The use of a straight mineral oil is recommended for most
worm gear applications. This type of oil is applicable to gears
of all materials, including non-metallic materials.
Mild E.P. (Extreme Pressure) lubricants may be used with Iron
and Steel Gears. E.P. lubricants normally should be selected
of the same viscosity as straight mineral oil, E.P. lubricants
are not recommended for use with brass or bronze gears.
SAE80 or 90 gear oil should be satisfactory for splash lubricated gears. Where extremely high or low speed conditions are
encountered, consult a lubricant manufacturer. Oil temperature of 150°F should not be exceeded for continuous duty
applications. Temperatures up to 200°F can be safely tolerated for short periods of time.
Many specialty lubricants have been recently developed to
meet the application demands of today’s markets, including
synthetics and both high and low temperature oils and greases. In those instances where Bath or Drip Feed is not practical, a moly-Disulphide grease may be used successfully, for
low speed applications.
ENGINEERING INFORMATION
GENERAL
MATERIALS
STYLES
Boston Gear stock steel gears are made from a .20 carbon
steel with no subsequent treatment. For those applications
requiring increased wearability. Case-hardening produces a
wear resistant, durable surface and a higher strength core.
Carburizing and hardening is the most common process used.
Several proprietary nitriding processes are available for producing an essentially distortion-free part with a relatively shallow but wear-resistant case. Boston stock worms are made of
either a .20 or .45 carbon steel. Selection of material is based
on size and whether furnished as hardened or untreated.
Boston Spur, Helical, and Worm Gears are carried in Plain,
Web, or Spoke styles, as illustrated.
Stock cast iron gears are manufactured from ASTM-CLASS
30 cast iron to Boston Gear specifications. This provides a
fine-grained material with good wear-resistant properties.
Bronze worm and helical gears are produced from several
alloys selected for bearing and strength properties. Phosphor
bronze is used for helicals and some worm gears (12P and
coarser). Finer pitch worm gears are made from several different grades of bronze, dependent on size.
PLAIN – A
Non-metallic spur Gears listed in this Catalog are made from
cotton reinforced phenolic normally referred to as Grade “C.”
Plastic Gears listed are molded from either Delrin®, Acetal or
Minlon®.
STANDARD KEYWAYS AND SETSCREWS
Standard
Diameter of Hole
W
d
Recommended
Setscrew
5/16 to 7/16”
1/2 to 9/16
5/8 to 7/8
15/16 to 1-1/4
1-5/16 to 1-3/8
1-7/16 to 1-3/4
1-13/16 to 2-1/4
2-5/16 to 2-3/4
2-13/16 to 3-1/4
3-5/16 to 3-3/4
3-13/16 to 4-1/2
4-9/16 to 5-1/2
5-9/16 to 6-1/2
3/32”
1/8
3/16
1/4
5/16
3/8
1/2
5/8
3/4
7/8
1
1-1/4
1-1/2
3/64”
1/16
3/32
1/8
5/32
3/16
1/4
5/16
3/8
7/16
1/2
7/16
1/2
10-32
1/4-20
5/16-18
3/8-16
7/16-14
1/2-13
9/16-12
5/8-11
3/4-10
7/8-9
1-8
1-1/8-7
1-1/4-6
WEB – B
WEB WITH
LIGHTNING HOLES – C
W
d
X
DIA. OF HOLE
OR D
X'
FORMULA:
X=
(D/2)2– (W/2) 2 + d + D/2
SPOKE – D
X’ = 2X – D
EXAMPLE:
Hole 1”; Keyway 1/4” wide by 1/8” deep.
X=
(1/2)2 – (1/8)2 + 1/8 + 1/2 = 1.109”
1.109”
X’ = 2.218 – 1.000 = 1.218”
Gear Catalog
153
ENGINEERING INFORMATION
HOW TO FIGURE HORSEPOWER AND TORQUE
TO OBTAIN
HAVING
FORMULA
Velocity (V)
Feet Per Minute
Pitch Diameter (D) of
Gear or Sprocket – Inches V = .2618 x D x RPM
& Rev. Per Min. (RPM)
Velocity (V) Ft. Per Min.
V
Rev. Per Min. (RPM) & Pitch Diameter (D) of
RPM = —————
.2618
xD
Gear or Sprocket—Inches
Pitch Diameter (D) Velocity (V) Ft. Per
of Gear or Sprocket Min. & Rev. Per Min.
— Inches
(RPM)
V
D = ——————
.2618 x RPM
Cut on Dotted Lines
and Keep for Quick Reference
APPLICATION FORMULAS
1 hp = 36 lb-in. @ 1750 rpm
1 hp = 3 lb-ft. @ 1750 rpm
2 TK
OHL = ————
D
Torque (lb.-in.) x rpm
hp = —————————
63,025
Force (lb) x Velocity (ft/min.)
hp = ————————————
33,000
Velocity (ft/min.) = 0.262 x Dia. (in.) x rpm
Torque (lb.-in) = Force (lb) x Radius (in.)
Torque (T) In. Lbs.
Force (W) Lbs. &
Radius (R) Inches
T=WxR
hp x 63,025
Torque (lb.-in.) = ——————
rpm
Horsepower (HP)
Force (W) Lbs. &
Velocity (V) Ft. Per Min.
WxV
HP = ————
33000
Mechanical Output
hp
= ———— x 100%
Efficiency Input hp
Horsepower (HP)
Torque (T) In. Lbs. &
Rev. Per Min. (RPM)
x RPM
————
HP = T
63025
Torque (T) In. Lbs.
Horsepower (HP)
& Rev. Per Min. (RPM)
63025 x HP
T = —————
RPM
Force (W) Lbs.
Horsepower (HP) &
Velocity (V) Ft. Per Min.
33000 x HP
W = —————
V
Horsepower (HP) &
Rev. Per Min. (RPM) Torque (T) In. Lbs.
OT (lb-in.) x Output rpm
Output hp = ——————————
63,025
OT = Input Torque x Ratio x Efficiency
OT = Output Torque
Input rpm
Output rpm = ————
Ratio
OHL = Overhung Load (lb)
T = Shaft Torque (lb-in.)
D = PD of Sprocket, Pinion or Pulley (in.)
K = Overhung Load Factor
Overhung Load Factors:
Sprocket or Timing Belt . . . . . . . .1.00
Pinion & Gear Drive . . . . . . . . . . .1.25
Pulley & V-Belt Drive . . . . . . . . . .1.50
Pulley & Flat Belt Drive . . . . . . . .2.50
Variable Pitch Pulley . . . . . . . . . .3.50
kW = hp x 0.7457
in. = mm/25.4
Temp. °C = (°F - 32) x 0.556
Temp. °F = (°C x 1.8) + 32
Torque (lb-in.) = 86.6 x kg•m
Torque (lb-in.) = 8.85 x N•m
Torque (lb-in.) = 88.5 x daN•m
ILLUSTRATION OF HORSEPOWER
63025 x HP
RPM = —————
T
FORCE (W)
1000 LBS. 1000
LBS.
FORCE (W)
= 33,000 LBS.
33,000
LBS.
DISTANCE = 1 FT.
TIME = 1 MIN.
POWER is the rate of doing work.
WORK is the exerting of a FORCE through a DISTANCE. ONE
FOOT POUND is a unit of WORK. It is the WORK done in exerting a
FORCE OF ONE POUND through a DISTANCE of ONE FOOT.
THE AMOUNT OF WORK done (Foot Pounds) is the FORCE
(Pounds) exerted multiplied by the DISTANCE (Feet) through
which the FORCE acts.
THE AMOUNT OF POWER used (Foot Pounds per Minute) is
the WORK (Foot Pounds) done divided by the TIME (Minutes)
required.
WORK (Ft. Lbs.)
POWER (Foot Pounds per Minute) = ————————
TIME (Minutes)
POWER is usually expressed in terms of HORSEPOWER.
HORSEPOWER is POWER (Foot Pounds per Minute) divided
by 33000.
POWER (Ft. Lbs. per Minute)
HORSEPOWER (HP) = ————————————
33000
WORK (Ft. Pounds)
= —————————
33000 x TIME (Min.)
FORCE (Lbs.) x DISTANCE (Feet)
= ———————————————
33000 x TIME (Min.)
FORCE (Lbs.) x DISTANCE (Feet)
= ———————————————
33000 x TIME (Min.)
154
Gear Catalog
33,000 x 1
HP = ————— = 1 HP
33,000 x 1
DISTANCE = 33 FT.
TIME = 1 MIN.
1000 x 33
HP = ———— = 1 HP
33,000 x 1
TORQUE (T) is the product of a FORCE (W) in pounds,
times a RADIUS (R) in inches from the center of shaft (Lever
Arm) and is expressed in Inch Pounds.
R = 1"
W300*
T=WR=300 x 1=300 In. Lbs.
R = 2"
W150*
T=WR=150 x 2=300 In. Lbs.
If the shaft is revolved, the FORCE (W) is moved through a
distance, and WORK is done.
2¹R
WORK (Ft. Pounds) = W x —— x No. of Rev. of Shaft.
12
When this WORK is done in a specified TIME, POWER is used.
2¹R
POWER (Ft. Pounds per Min.) = W x —— x RPM
12
Since (1) HORSEPOWER = 33,000 Foot Pounds per Minute
2¹R RPM
WxRxRPM
HORSEPOWER (HP) = W x —— x ——— = ——————
12 33,000
63,025
but TORQUE (Inch Pounds) = FORCE (W) X RADIUS (R)
TORQUE (T) x RPM
Therefore HORSEPOWER (HP) = —————————
63,025
ENGINEERING INFORMATION
APPLICATION CLASSIFICATION FOR VARIOUS LOADS
Type of Machine
To Be Driven
AGITATORS
Pure Liquid
Semi-Liquids, Variable Density
BLOWERS
Centrifugal and Vane
Lobe
BREWING AND DISTILLING
Bottling Machinery
Brew Kettles–Continuous Duty
Cookers – Continuous Duty
Mash Tubs – Continuous Duty
Scale Hopper – Frequent Starts
CAN FILLING MACHINES
CANE KNIVES
CAR DUMPERS
CAR PULLERS
CLARIFIERS
CLASSIFIERS
CLAY WORKING MACHINERY
Brick Press & Briquette Machine
Extruders and Mixers
COMPRESSORS
Centrifugal
Lobe–Reciprocating, Multi-Cycle
Reciprocating – Single Cycle
CONVEYORS—
UNIFORMLY LOADED & FED
Apron
Assembly-Belt – Bucket or Pan
Chain – Flight
Oven – Live Roll – Screw
CONVEYORS—HEAVY DUTY
NOT UNIFORMLY FED
Apron
Assembly-Belt – Bucket or Pan
Chain – Flight
Live Roll
Oven – Screw
Reciprocating – Shaker
CRANES AND HOISTS
Main Hoists
Bridge and Trolley Drive
CRUSHER
Ore, Stone
Sugar
Chart I For All Drives
Chart I For All Drives
Service Factor Loading
Service Factor Loading
Not More Not More
More
Than 15 Than 10
Than
Mins. in Hrs. per 10 Hrs.
2 Hrs.
Day
Per Day
0.80
1.00
1.00
1.25
1.25
1.50
0.80
1.00
1.00
1.25
1.25
1.50
0.80
—
—
—
—
—
—
—
—
—
—
1.00
—
—
—
1.25
1.00
1.50
1.75
1.25
1.00
1.25
1.25
1.25
1.25
1.25
1.50
—
—
—
—
1.25
1.50
—
1.00
1.75
1.25
2.00
1.50
—
—
—
1.00
1.25
1.75
1.25
1.50
2.00
—
—
—
—
1.00
1.00
1.00
1.00
1.25
1.25
1.25
1.25
—
—
—
—
—
—
1.25
1.25
1.25
—
1.25
1.75
1.50
1.50
1.50
—
1.50
2.00
*
1.00
1.25
—
—
1.75
1.50
2.00
1.50
Not More Not More
More
Than 15 Than 10
Than
Mins. in Hrs. per 10 Hrs.
2 Hrs.
Day
Per Day
Type of Machine
To Be Driven
ELEVATORS
Bucket – Uniform Load
Bucket – Heavy Load
Centrifugal Discharge
Freight
Gravity Discharge
FANS
Centrifugal – Light (Small Diam.)
Large Industrial
FEEDERS
Apron – Belt – Screw
Disc
Reciprocating
FOOD INDUSTRY
Beet Slicer
Cereal Cooker
Dough Mixer – Meat Grinder
GENERATORS (NOT WELDING)
HAMMER MILLS
HOISTS
Heavy Duty
Medium Duty and Skip Type
LAUNDRY TUMBLERS
LINE SHAFTS
Uniform Load
Heavy Load
MACHINE TOOLS
Auxiliary Drive
Main Drive – Uniform Load
Main Drive – Heavy Duty
METAL MILLS
Draw Bench Carriers & Main Drive
SLITTERS
TABLE CONVEYORS —
NON REVERSING
Group Drives
Individual Drives
Wiring Drawing,
Flattening or Winding
MILLS ROTARY TYPE
BALL AND ROD
Spur Ring Gear and
Direct Connected
Cement Kilns, Pebble
Dryers and Coolers
Plain and Wedge Bar
Tumbling Barrels
—
—
—
—
—
1.00
1.25
1.25
1.25
1.00
1.25
1.50
1.50
1.50
1.25
—
—
1.00
1.25
1.25
1.50
—
—
—
1.25
1.00
1.75
1.50
1.25
2.00
—
—
—
—
—
1.25
1.00
1.25
1.00
1.75
1.50
1.25
1.50
1.25
2.00
—
—
—
1.75
1.25
1.25
2.00
1.50
1.50
—
—
1.00
1.25
1.25
1.50
—
—
—
1.00
1.25
1.75
1.25
1.50
2.00
—
—
1.25
1.25
1.50
1.50
—
—
1.25
1.75
1.50
2.00
—
1.25
1.50
—
—
—
—
—
—
—
—
—
—
2.00
1.50
1.50
1.50
2.00
*Consult manufacturer.
Gear Catalog
155
ENGINEERING INFORMATION
APPLICATION CLASSIFICATION FOR VARIOUS LOADS (Continued)
Type of Machine
To Be Driven
AGITATORS
Pure Liquid
Semi-Liquids, Variable Density
BLOWERS
Centrifugal and Vane
Lobe
BREWING AND DISTILLING
Bottling Machinery
Brew Kettles–Continuous Duty
Cookers – Continuous Duty
Mash Tubs – Continuous Duty
Scale Hopper – Frequent Starts
CAN FILLING MACHINES
CANE KNIVES
CAR DUMPERS
CAR PULLERS
CLARIFIERS
CLASSIFIERS
CLAY WORKING MACHINERY
Brick Press & Briquette Machine
Extruders and Mixers
COMPRESSORS
Centrifugal
Lobe–Reciprocating, Multi-Cycle
Reciprocating – Single Cycle
CONVEYORS—
UNIFORMLY LOADED & FED
Apron
Assembly-Belt – Bucket or Pan
Chain – Flight
Oven – Live Roll – Screw
CONVEYORS—HEAVY DUTY
NOT UNIFORMLY FED
Apron
Assembly-Belt – Bucket or Pan
Chain – Flight
Live Roll
Oven – Screw
Reciprocating – Shaker
CRANES AND HOISTS
Main Hoists
Bridge and Trolley Drive
CRUSHER
Ore, Stone
Sugar
Chart I For All Drives
Chart I For All Drives
Service Factor Loading
Service Factor Loading
Not More Not More
More
Than 15 Than 10
Than
Mins. in Hrs. per 10 Hrs.
2 Hrs.
Day
Per Day
0.80
1.00
1.00
1.25
1.25
1.50
0.80
1.00
1.00
1.25
1.25
1.50
0.80
—
—
—
—
—
—
—
—
—
—
1.00
—
—
—
1.25
1.00
1.50
1.75
1.25
1.00
1.25
1.25
1.25
1.25
1.25
1.50
—
—
—
—
1.25
1.50
—
1.00
1.75
1.25
2.00
1.50
—
—
—
1.00
1.25
1.75
1.25
1.50
2.00
—
—
—
—
1.00
1.00
1.00
1.00
1.25
1.25
1.25
1.25
—
—
—
—
—
—
1.25
1.25
1.25
—
1.25
1.75
1.50
1.50
1.50
—
1.50
2.00
*
1.00
1.25
—
—
1.75
1.50
2.00
1.50
Type of Machine
To Be Driven
ELEVATORS
Bucket – Uniform Load
Bucket – Heavy Load
Centrifugal Discharge
Freight
Gravity Discharge
FANS
Centrifugal – Light (Small Diam.)
Large Industrial
FEEDERS
Apron – Belt – Screw
Disc
Reciprocating
FOOD INDUSTRY
Beet Slicer
Cereal Cooker
Dough Mixer – Meat Grinder
GENERATORS (NOT WELDING)
HAMMER MILLS
HOISTS
Heavy Duty
Medium Duty and Skip Type
LAUNDRY TUMBLERS
LINE SHAFTS
Uniform Load
Heavy Load
MACHINE TOOLS
Auxiliary Drive
Main Drive – Uniform Load
Main Drive – Heavy Duty
METAL MILLS
Draw Bench Carriers & Main Drive
SLITTERS
TABLE CONVEYORS —
NON REVERSING
Group Drives
Individual Drives
Wiring Drawing,
Flattening or Winding
MILLS ROTARY TYPE
BALL AND ROD
Spur Ring Gear and
Direct Connected
Cement Kilns, Pebble
Dryers and Coolers
Not More Not More
More
Than 15 Than 10
Than
Mins. in Hrs. per 10 Hrs.
2 Hrs.
Day
Per Day
—
—
—
—
—
1.00
1.25
1.25
1.25
1.00
1.25
1.50
1.50
1.50
1.25
—
—
1.00
1.25
1.25
1.50
—
—
—
1.25
1.00
1.75
1.50
1.25
2.00
—
—
—
—
—
1.25
1.00
1.25
1.00
1.75
1.50
1.25
1.50
1.25
2.00
—
—
—
1.75
1.25
1.25
2.00
1.50
1.50
—
—
1.00
1.25
1.25
1.50
—
—
—
1.00
1.25
1.75
1.25
1.50
2.00
—
—
1.25
1.25
1.50
1.50
—
—
1.25
1.75
1.50
2.00
—
1.25
1.50
—
—
—
—
—
—
2.00
1.50
1.50
*Consult manufacturer.
This list is not all-inclusive and each application should be checked to determine if any unusual operating conditions will be encountered.
156
Gear Catalog
TERMS AND CONDITIONS
ALL QUOTATIONS AND SALES BY BOSTON GEAR, THE CONTRACTING PARTY HERETO, A DIVISION OF IMO INDUSTRIES INC. HEREAFTER CALLED “COMPANY” ARE MADE ON THE FOLLOWING TERMS AND CONDITIONS.
1.
charged for the actual work done. The Company assumes no
responsibility for, and will not be liable for loss of or damage
to samples, blueprints, diagrams, and other material of any
nature submitted or furnished by the customer or prospective
customer, provided the Company has exercised reasonable
care in the handling of the same. The Company does not
assume transportation and insurance costs on any of the
foregoing items. In all cases where the customer or prospective customer makes no statement in writing, concerning the
disposition of any of the foregoing material when submitted,
the Company reserves the right to dispose of such material
according to its best judgment.
QUOTATIONS and THEIR ACCEPTANCE
Unless otherwise specified, quotations on stock products are
for immediate acceptance, subject to prior sales. Quotations
on special products are made subject to acceptance within
thirty (30) days from date thereof, but in making such quotations, the Company reserves the right to change or cancel
them at any time prior to the receipt of the customers’ written
acceptance. All quotations for special products are based
upon supplying up to plus or minus 5% of quantity ordered
unless otherwise stated in the quotation. All quotations are
made F.O.B. shipping point.
2.
PRICES
Prices are in accordance with current Company price lists,
are based on quantity specified and are subject to minimum
order requirements of the Company. In the event the
Company consents to the cancellation or suspension of
orders, it shall be entitled to charge for work done and material ordered or used up to the time of giving its written consent
to such cancellation or suspension. When work is to be done
on material furnished by the customer, prices are based on
the quantity specified being delivered by the customer at one
time within a reasonable time after acceptance of order.
Quotations will be made on special products of all types or
on cutting only. Prices, specifications, and terms and conditions, as well as all statements appearing in the Company’s
catalogs and advertisements, and made elsewhere by the
Company are subject to change without notice. Changes by
the customer in specifications or delivery requirements will
be subject to change in price. Whenever the net price of an
order amounts to less than $25.00, a minimum charge of
$25.00 will be made.
3.
MATERIAL FURNISHED by THE CUSTOMER
Unless otherwise specified, quotations are based on material
furnished by the customer being of ordinary hardness, normal
allowance for finish, uniform specification, and machine work
being of ordinary commercial accuracy. If material furnished
by the customer involves the Company in expense not contemplated by the contract, the customer will be charged for all
such additional expense. If serious defects are found in the
material furnished by the customer, the customer will be
DIMENSIONS
When dimensions of rims, bores, and hubs are not clearly
specified, quotations are based on ordinary dimensions.
Before the customer’s blanks are accepted by the Company
for cutting, the diameter, holes, rims, and ends of holes must
be finished; for bevel gears, hubs, must be of uniform length.
There should also be an allowance of extra blanks to cover
possible spoilage. Unless otherwise specified, dimensions
are in inches.
6.
SAMPLES
In no case are samples furnished free. If agreed to by the
Company, a few products in advance of a regular quantity
order will be furnished but only at an agreed upon price over
the regular quantity price.
7.
TAXES
If any tax is at any time levied or imposed by the federal or
any state or local government, or any other taxing authority,
upon the products covered hereby, or in respect of the production, processing, manufacture, storage, sale, use, or consumption thereof, or, in the case of goods delivered at the
Company’s expense, upon the transportation thereof, including freight charges thereon, the amount of such tax shall be
added to the purchase price above specified and shall be
borne by the customer. The Company will accept a valid
exemption certificate from the customer if applicable; however, if any exemption certificate previously accepted it not recognized by the taxing authority involved and the Company is
required to pay the tax covered by such exemption certificate, the customer shall be required to promptly reimburse
the Company for the taxes so paid.
CREDIT TERMS
To those customers and prospective customers whose credit
is satisfactory to the Company, terms are net thirty (30) days,
from date of invoice, with the option of paying semi-monthly.
The Company may at any time when, in its opinion, the financial condition of the customer or prospective customer warrants it, either alter or suspend credit, or discontinue deliveries, and render a charge covering the value of any partially
finished special products which are then being manufactured
for the customer. In those instances where credit is not established, and in cases where satisfactory references are not
given, the terms are cash with order. For special products in
those instances where credit is not established to the satisfaction of the Company, a deposit of at least 50% of total
value of the order is required. Remittances should be made
by check or money order, payable to Boston Gear, 14
Hayward St., Quincy, Massachusetts 02171, U.S.A. Delays in
transportation shall not exceed the terms of payment.
4.
5.
8.
SHIPMENTS
All shipments are made F.O.B. shipping point (subject to
freight allowance under conditions stated in separate price
schedules). When ordering, the customer’s desired method
of shipment must be clearly stated. Where instructions for
shipping do not appear on the order, shipment will be made
according to the Company’s best judgment. Full risk of loss
(including transportation delays and losses) shall pass the
customer upon delivery of the products to F.O.B. point.
Unless otherwise instructed, all Parcel Post shipments are
insured at the customers’ expense. Parcel Post shipments
without insurance are at the customer’s risk. Deliveries by
Messenger Service to a terminal are made at the customer’s
risk and expense. Partial shipments shall be permitted and
the Company may invoice each shipment separately.
Gear Catalog
157
TERMS AND CONDITIONS
ALL QUOTATIONS AND SALES BY BOSTON GEAR, THE CONTRACTING PARTY HERETO, A DIVISION OF IMO INDUSTRIES INC. HEREAFTER CALLED “COMPANY” ARE MADE ON THE FOLLOWING TERMS AND CONDITIONS.
9.
REFUSAL of SHIPMENT
In case of the refusal or inability of the customer to accept
any shipment in accordance with the terms of the order, the
customer shall be liable for freight, express, storage, extra
cost of handling and all other expenses incurred by the
Company as a result of such refusal or inability.
10. DELAY or NONPERFORMANCE
The Company shall not be liable for any delay or loss of any
nature or failure in performance due to or caused by fire,
flood, strike, or other differences with workmen, accidents,
labor or material or transportation shortages, war (declared
or undeclared), insurrection, riot, or by any governmental
orders or regulations, legal interferences or prohibitions,
defaults on the part of suppliers or other causes beyond the
Company’s reasonable control.
11. CLAIMS and REJECTED MATERIAL
Any products which have been altered or damaged are not
returnable except with the Company’s written consent. To
reject products on inspection as defective, customer must
notify the Company in writing within ten (10) days from receipt
of the products. Before allowing or rejecting claim, the
Company shall then have the option of reinspection at the
customer’s plant or its own. Defects that do not impair service
shall not be a cause for rejection. The Company shall have
the right to replace within a reasonable time any product or
products which in its opinion do not conform to the order. No
claim will be allowed for any products damaged by the customer or damaged in transit. Expenses incurred in connection
with claims for which the Company is not liable, will be
charged to the customer. The Company will not be responsible for any work done to correct errors unless such work is
authorized by the written consent of the Company. The
Company assumes no liability for any claim for infringement
of any foreign or domestic patent.
12. LIMITED WARRANTY
The Company warrants that products manufactured or sold
by it shall be free from defects in material and workmanship.
Any products which shall within two (2) years of delivery, be
proved to the Company’s satisfaction to have been defective
at the time of delivery in these respects will be replaced or
repaired by the Company at its option. Freight is the responsibility of the customer. The Company’s liability under this
limited warranty is limited to such replacement or repair and it
shall not be held liable in any form of action for direct or consequential damages to property or person. The foregoing limited warranty is expressly made in lieu of all other warranties
whatsoever, express, implied and statutory and including
without limitation the implied warranties of merchantability
and fitness.
No employee, agent, distributor, or other person is authorized
to give additional warranties on behalf of Boston Gear, nor to
assume for Boston Gear any other liability in connection with
any of its products, except an officer of Boston Gear by a
signed writing.
13. WAIVER of BREACH
No waiver by the Company of any breach of these provisions
shall constitute a waiver of any other breach.
158
Gear Catalog
14. CONSEQUENTIAL DAMAGES
The Company shall not be liable to the customer or others
claiming through the customer for special or consequential
charges for any reason whatsoever.
15. LAWS
To the best of the Company’s knowledge and belief it is in
compliance with all local, state and federal laws. All orders
are subject to the condition that the Company’s obligation
under such local, state and federal laws and Executive
Orders, Rules and Regulations issued thereunder, whether
now in force or hereafter made effective, shall be no greater
as a result of this agreement and no greater than required by
such laws and the Company expressly disclaims assumptions of any of the customer’s obligations under such laws.
16. GENERAL
Any terms and conditions of a customer’s order which are
inconsistent with or additional to the terms and conditions
hereof shall not be binding on the Company and shall not be
considered applicable to any sale or shipment of the
Company’s products. All such terms and conditions are hereby expressly rejected. No waiver, alteration or modification of
any of the Company’s terms and conditions shall be binding
on the Company unless made in writing and agreed to by a
duly authorized official of the Company.
17. PRINTERS, STENOGRAPHIC, and CLERICAL ERRORS
The Company is not responsible for printers’ errors made in
any of its publications and other forms of printed matter, or
for any stenographic and clerical errors. All such errors are
subject to correction.
18. REDUCER EXPRESS
A)
B)
C)
D)
Quantities of reducers covered as part of this program
are a maximum of:
6 pieces for any 710–726 or 221–231
2 pieces for any 732–760 or 239–247
Bost-Kleen, Stainless Bost-Kleen and modified reducers
are not included as part of this program.
Boston Gear will utilize any major courier to handle air
shipments.
Consult Boston Gear for details.
19. GUARANTEED SAME DAY SHIPMENT
• Products must be available from stock.
• Does not apply to WOG or scheduled release shipments.
• Same day shipment available Monday through Friday excluding U.S. holidays. For emergency service, please call
606-525-8021.
• In the event your freight carrier is unable to meet your
requirements, we reserve the right to substitute a carrier of
equivalent quality.
• If a shipment is missed and Boston Gear pays the freight,
we’ll pay for the freight charges as they were originally specified on the order.
• Brokerage and export fees still apply to shipments outside
the U.S.
• For those distributors in Eastern or Central time zones, after
5 p.m. local time, please call 310-802-3834 or fax
310-802-0153 to place your order.
• Video Terminal Orders entered up to 8 p.m. ET will be
shipped the same day.
INDEX TO CATALOG NUMBERS
Catalog Number
Description
Page No.
Catalog Number
Description
Page No.
06000
06724*
2NSC25*
2S(S)C12*
3M035060*
5M064150*
5R21-16S*
Gear Gauge Set
Thrust Washers
Washdown Clamp Collars
Clamp Collars
Timing Belts
Timing Belts
Coupling Sleeve Stock
50
118
116
115
125
131
97
DH1438*
Worms
81
DSH-1
DTH-1
DUH
DVH-1
Worm
Worm
Worm
Worm
74
75
76
77
11722*
18510*
18800*
Shaft Couplings & Inserts
Steel Bushings
Steel Washers
93
119
118
FA5-3/16-3/16*
FC12-3/8*
FC12-SOLID*
FCP21-1/8*
B
BF7-3/8-3/8*
BG11-1-3-3*
Shaft Couplings
Shaft Couplings
93
94
C
CASC18*
CD1142*
CG1042*
CQ1342*
CR4*
Clamp Collars
Worm Gears
Worm Gears
Worm Gears
Shaft Couplings
114
77
77
77
96
CS(S)C10-32
CS(S)C12*
Clamp Collars
Clamp Collars
113
114
D
D(B)620A*
D(B)860A*
D1080A
D1118*
D1126*
Worm Gears
Worm Gears
Worm Gear
Worm Gears
Worm Gears
81
80
79
74
75
D1134*
D1142*
D1260A*
D(B)1400*
D1407K
Worm Gears
Worm Gears
Worm Gears
Worm Gears
Worm
76
77
78
78
78
D(B)1410*
D1418K*
D(B)1420A*
D(B)1427K*
D(B)1430A*
Worm Gears
Worms
Worm Gears
Worms
Worm Gears
79
79
80
80
81
D1438(K)*
D(B)1600*
D(B)1610*
D(B)1620A*
D(B)1630A*
Worms
Worm Gears
Worm Gears
Worm Gears
Worm Gears
81
78
79
80
81
DH1407*
DH1418*
DH1427*
Worms
Worms
Worms
78
79
80
F
Shaft Couplings
Shaft Couplings
Shaft Couplings
Shaft Couplings
96
92
92
97
G
G(S)24*
G96*
G182*
G226*
G460Y*
Pinion Wire
Spur Gears
Spur Gears
Spur Gears
Miter Gears
22
6
7
9
58
G478Y-G*
G576-2*
G632*
G(B)850*
G1018*
Bevel Gears
Racks
Internal Gears
Worm Gears
Worm Gears
62
23
24
80
74
G1026*
G1034*
G1042*
G(B)1050A*
G(B)1060A*
Worm Gears
Worm Gears
Worm Gears
Worm Gears
Worm Gears
75
76
77
78
79
G1066K
G(B)1070*
G1076K
G(B)1077*
G1086K
Worm
Worm Gears
Worm
Worm Gears
Worm
79
80
80
81
81
G(B)1100*
G1106KL(R)
G1110*
G1116K
G1202*
Worm Gears
Worm
Worm Gears
Worm
Grooved Pulleys
G(B)1260
G(B)8100*
GA20*
GAB20A
GB20*
Worm Gear
Worm Gears
Change Gears
Compound Bushing
Change Gears
78
80
16
16
17
GBB16A*
GD20A*
GDB12A
GDSH-1
GDTH-1
Compound Bushing
Change Gears
Compound Bushing
Worm
Worm
17
18
18
74
75
82
82
83
83
120
*Initial numbers, larger numbers arranged according to size.
Gear Catalog
159
INDEX TO CATALOG NUMBERS
Catalog Number
Description
Page No.
Catalog Number
Description
Page No.
GDUH
GDVH-1
GF20*
GFB10A
GH20*
Worm
Worm
Change Gears
Compound Bushing
Change Gears
76
77
19
19
20
HL1056*
HL1066*
HL1076*
HL1086*
HL1106
Worms
Worms
Worms
Worms
Worm
78
79
80
81
82
GH1056
GH1066
GH1076
GH1086
Worm
Worm
Worm
Worm
78
79
80
81
HL1116
HLK101Y*
HLK105Y*
HLSH-1
HLSK101Y*
Worm
Miter Gears
Miter Gears
Worm
Spiral Miter Gears
83
59
60
74
61
GHB8A
GLSH-1
GLTH-1
GLUH
GLVH-1
Compound Bushing
Worm
Worm
Worm
Worm
20
74
75
76
77
HLTH-1
HLUH
HLVH-1
HP1106
HQSH-1
Worm
Worm
Worm
Worm
Worm
75
76
77
82
74
GP579-1*
GP1018(-1/8)*
GP1026(-3/16)*
GP1034(-3/16)*
GP1616Y*
Racks
Worm Gears
Worm Gears
Worm Gears
Miter Gears
23
74
75
76
59
HQTH-1
HQUH
HQVH-1
HS608L(R)*
Worm
Worm
Worm
Helical Gears
75
76
77
53
GP2424Y*
GQSH-1
GQTH-1
GQUH
GQVH-1
GSS460Y*
GSS479Y*
Miter Gears
Worm
Worm
Worm
Worm
Miter Gears
Bevel Gears
58
74
75
76
77
58
62
J
J37(A)*
J37(B)*
J37(B)-01*
JP(D)25-1/8*
JPE25-1/8*
JS37(B)*
Universal Joints
Universal Joints
Universal Joint Parts
Universal Joints
Universal Joints
Universal Joints
H
104
104
104
108
109
104
L
H608L(R)*
H1008L(R)*
H1056*
H1066*
H1076*
Helical Gears
Helical Gears
Worms
Worms
Worms
53
52
78
79
80
L93Y*
L99Y*
L105Y*
L146Y-G*
L147Y-G*
Miter Gears
Miter Gears
Miter Gears
Bevel Gears
Bevel Gears
58
59
60
63
62
H1086*
H1106
H1116
H1427L(R)
H2412*
Worms
Worm
Worm
Worms
Spur Gears
81
82
83
80
8
L153Y-G*
L156Y-G*
L204-4*
L501-2*
L1056*
Bevel Gears
Bevel Gears
Racks
Racks
Worms
64
65
35
23
78
H3216*
HB612L(R)*
HDSH-1
HDTH-1
HDUH
Spur Gears
Helical Gears
Worm
Worm
Worm
7
53
74
75
76
L1066*
L1076
L1086*
L1106
L1116
Worms
Worm
Worms
Worm
Worm
79
80
81
82
83
HDVH-1
HL146Y-G*
HL147Y-G*
HL153Y-G*
HL156Y-G
Worm
Bevel Gears
Bevel Gears
Bevel Gears
Bevel Gears
77
63
62
64
65
L1427
L1438
LSA101Y*
LSH(P)
LTHB(P)
Worm
Worm
Spiral Miter Gears
Worms
Worms
80
81
61
74
75
*Initial numbers, larger numbers arranged according to size.
160
Gear Catalog
INDEX TO CATALOG NUMBERS
Catalog Number
Description
LUHB(P)
LVHB-1
Worms
Worm
Page No.
76
77
N
NA11B(-5/16)*
NAR5*
NB11B(-3/8)*
ND11B(-1/2)*
NF11B(-5/8)*
Spur Gears
Steel Stem Pinions
Spur Gears
Spur Gears
Spur Gears
8
21
9
10
11
NH11B(-3/4)*
NJ11B(-1)*
NK11B*
NL11B*
NO11B*
NSC25*
Spur Gears
Spur Gears
Spur Gears
Spur Gears
Spur Gears
Washdown Collars
12
13
14
15
15
112
Catalog Number
Miter Gears
Page No.
QD(H)15*
Spur Gears
11
QFH15*
QHH16*
QSH-1
QTH-1
QUH
QVH-1
Spur Gears
Spur Gears
Worm
Worm
Worm
Worm
11
12
74
75
76
77
S
S2412*
S3216*
S(S)C12*
SCC1/4-1/4*
SH(S)82-G(P)*
SS82-G(P)*
O
OA424Y*
Description
Spur Gears
Spur Gears
Setscrew Collars
Shaft Couplings
Spiral Bevel Gears
Spiral Bevel Gears
8
7
111
95
66
66
U
60
P
PA528Y-G(P)*
PA3212Y-G(P)*
PA3316Y-G(P)*
PA3010(D,N)F060*
PA3010(D,N)F090*
Bevel Gears
Bevel Gears
Bevel Gears
Timing Belt Pulleys
Timing Belt Pulleys
65
64
63
126
127
PA5012(D,N)F090*
PA5012(D,N)F150*
Timing Belt Pulleys
Timing Belt Pulleys
132
133
PL3010(D,S)F090*
PL5011(D,S)F090*
Timing Belt Pulleys
Timing Belt Pulleys
128
134
PLB3010(D,S)F090* Timing Belt Pulleys
PLB3032(D,S)F090* Timing Belt Pulleys
PLB5011(D,S)F090* Timing Belt Pulleys
129
130
135
Q
Q620A*
Q860A
Q1080A
Q1260A
Q1318*
Worm Gears
Worm Gears
Worm Gears
Worm Gears
Worm Gears
81
80
79
78
74
Q1326*
Q1334*
Q1342*
QB(H)16*
QB616*
Worm Gears
Worm Gears
Worm Gears
Spur Gears
Worm Gears
75
76
77
10
81
QB808*
QB1016*
QB1212*
Worm Gears
Worm Gears
Worm Gears
80
79
78
UB75*
UJ(L,S)10(S,H)*
UJN(L,S)10-10*
UJ(L,S)(C,D)
Universal Joint Boot Kits
Universal Joint Yokes
Universal Joints
Universal Joint Center Kits
104
107
106
107
X
X5R21-16
XFC(A,BB,R)12*
XFCP21-1/8*
Shaft Coupling Part
Coupling Inserts
Shaft Coupling Part
97
92
97
Y
Y24-2*
Y2412*
Y3212*
Y4812*
Y6416*
Racks
Spur Gears
Spur Gears
Spur Gears
Spur Gears
35
30
28
27
25
YA12(-5/16)*
YB12(-3/8)*
YD12(-1/2)*
YF12(-5/8)*
YH12(-3/4)*
Spur Gears
Spur Gears
Spur Gears
Spur Gears
Spur Gears
30
31
31
32
33
YI2436*
YJ12(-1)*
YK12*
YP2412*
YP3212*
Internal Gears
Spur Gears
Spur Gears
Spur Gears
Spur Gears
36
33
34
29
27
YP4818*
YP4844*
YPB2412*
YPB3212*
YPB4818*
Spur Gears
Spur Gears
Spur Gears
Spur Gears
Spur Gears
25
26
29
28
26
*Initial numbers, larger numbers arranged according to size.
Gear Catalog
161
NOTES
162
Gear Catalog
®
GEARS
SPUR GEARS
Boston spur gears are designed to transmit motion or power between
parallel shafts. Configurations include spur, rack, pinion wire, stem
pinions and internal gears; most with a selection of bores, keyways
and setscrews. Fine-pitch gears are available in plastic, brass, stainless steel and steel. Heavier pitch spurs are available in steel and
cast iron. Styles include plain, web, web with lightening holes or
spoked. Change gears have consecutive numbers of teeth for a variety of ratios.
HELICAL GEARS
Boston’s helical gears are stocked both right and left hand, made with
a 45° helix angle. They are designed to transmit motion or power
between non-intersecting shafts which are positioned either parallel or
at 90° to each other. Because these gears are top-hobbed, there is
extremely close concentricity between the pitch diameter and the outside diameter.
BEVEL AND MITER GEARS
Boston miter and bevel gears are designed for transmission of
motion or power between intersecting shafts positioned at a right
angle. Most Boston straight-tooth miter and bevel gears have generated teeth with Coniflex® tooth form, for superior control of tooth contract and quiet operation. Spiral tooth gears are available for highspeed applications.
®Trademark of the Gleason Works.
WORM AND WORM GEARS
Boston worm and worm gears provide an effective answer for such
power transmission applications as high-ratio speed reduction, limited space, right-angle shafts and non-intersecting shafts. When properly applied, they are the smoothest and quietest form of gearing.
Steel worms and cast iron or bronze worm gears have throated teeth
are available in single, double or quadruple threads, 48 to 3 diametral
pitch. Acetal worms and worm gears are available in 48, 32 and 24
diametral pitches.
Gear Catalog
163
Boston Gear speed reducers.
700 Series single-reduction
worm gear speed reducers feature
integral hardened worms and
bronze worm gears. Through-bore
housings assure true shaft positioning, proper mating of worm and
gear, and perfect alignment under
maximum stress conditions. Oversize roller and ball bearings allow
greater overhung and thrust loads.
800 Series contains a broad
selection of compact, heavy-duty
helical gear drives, with long life
performance features and simplified
maintenance. Models include double and triple reduction units
in flanged or foot mounted arrangements.
Right-angle gear drives are
available with single or double output shafts and are designed for
high capacity and efficiency, quiet
operation, and long service life.
Bevel or spiral bevel gears are
made of hardened alloy steel, with
oversized bearings and high-quality
oil seals.
W700 Series double-reduction
worm gear speed reducers offer a
broad range of reduction ratios,
with integral hardened worms and
bronze worm gears used throughout. Mounting surfaces are
machined parallel for correct alignment of all drive components.
Precision through-bore housings
assure true shaft positioning with
proper mating of worms and gears.
200 Optimount Series helical
gear speed reducers contain gears
and pinions made of heat-treated
alloy steel or close-grain cast iron,
with ball or tapered roller bearings.
Rugged housings are precisionmachined to assure accurate and
permanent gear alignment.
Bost-Kleen 700 Series, designed
for the food processing and other
applications where the reducers are
constantly exposed to an environment requiring high pressure wash
down to maintain cleanliness.
Single reduction worm gear speed
reducers are certified by the Baking
Industry Sanitation Standards
Committee (BISSC) to assure contamination free operation.
Boston Gear speed reducers.
700 Series single-reduction
worm gear speed reducers feature
integral hardened worms and
bronze worm gears. Through-bore
housings assure true shaft
positioning, proper mating of worm
and gear, and perfect alignment
under maximum stress conditions.
Oversize roller and ball bearings
allow greater overhung and thrust
loads.
600A Series in-line helical and
right-angle helical/bevel speed
reducers are available in single,
double, triple, and quadruple reductions. They provide operating efficiency as high as 98%, for significant savings in required motor
horsepower and electrical consumption. First-reduction pinion and
gear teeth are precision ground
after hardening. Intermediate and
output pinions and gear teeth are
shaved prior to hardening. These
steps provide maximum strength
and smooth, quiet operation.
Right-angle gear drives are
available with single or double output shafts and are designed for
high capacity and efficiency, quiet
operation, and long service life.
Bevel or spiral bevel gears are
made of hardened alloy steel, with
oversized bearings and high-quality oil seals.
W700 Series double-reduction
worm gear speed reducers offer a
broad range of reduction ratios,
with integral hardened worms and
bronze worm gears used throughout. Mounting surfaces are
machined parallel for correct alignment of all drive components.
Precision through-bore housings
assure true shaft positioning with
proper mating of worms and gears.
200 Optimount Series helical
gear speed reducers contain gears
and pinions made of heat-treated
alloy steel or close-grain cast iron,
with ball or tapered roller bearings.
Rugged housings are precisionmachined to assure accurate and
permanent gear alignment.
Bost-Kleen 700 Series, designed
for the food processing and other
applications where the reducers
are constantly exposed to an environment requiring high pressure
wash down to maintain cleanliness.
Single reduction worm gear speed
reducers are certified by the
Baking Industry Sanitation
Standards Committee (BISSC) to
assure contamination free operation.
Boston Gear — Your Single Source for Motion Control Products
Boston Gear provides the Industry’s widest range of
coordinated power transmission components at the
most efficient cost. You get one-source dependability,
one-source convenience when you look to Boston Gear
Distributors for:
Speed Reducers/Gear Drives – Worm gear, in-line
helical and right-angle helical/worm speed reducers;
right-angle gear drives.
Stock Gears – Gears and gear sets for parallel and
right angle shafting: spur, helical, bevel and miter gears:
worms and worm gears.
Bearings & Shaft Accessories – Self-lubricating and
solid bronze bearings; anti-friction ball bearings,
mounted bearings, flanged cartridges, rod ends,
spherical roller bearings, linear ball bearings and
engineering grade thermoplastic bearings. ANSI
standard roller chain, sprockets, shaft couplings,
universal joints, collars, bushings and washers.
Electrical Products – Ratiotrol AC and DC adjustable
speed motor controllers, AC and DC motors, clutches,
brakes, and accessories.
Fluid Power Products – Pneumatic and hydraulic
cylinders, pneumatic filter/regulator/lubricator (FRL)
assemblies, directional control valves, air motors and
accessories.
Mechanical Clutches – Friction torque limiters, single
and multiple position, automatic and manual reset.
Thirteen series to suit an infinite array of applications.
Boston Gear Distributors offer competent selection
advice, local product stocks and electronic order processing through our dedicated On-Line Distributor
Information System. For the name and location of your
local Distributor, contact Boston Gear.
Call toll-free: 888-999-9860 for nearest Distributor
Boston Gear
14 Hayward Street
Quincy, MA 02171
tel
617.328.3300
fax
617.479.6238
http://www.bostgear.com
email
info@bosgear.com
Leading the Industry at Every Turn
(50116-WT)
Printed in U.S.A.
Copyright © Boston Gear, 1999