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TULSA SPEED REDUCERS
Tulsa Winches and Speed Reducers have been proven on the job- where it counts-for over 55 years. They are engineered and manufactured to provide reliability, efficiency, and
years of trouble free service in all types of applications.
• QUALITY CONSTRUCTION-Each component of the Tulsa Speed Reducer is carefully
designed and manufactured from the finest
materials to provide high strength and low
weight. Worm gearing offers high reduction
ratios in a close coupled, right ang le
arrangement.
• VERSATILE APPLICATION- Designed for intermittent operation and available in upright, low
mount and flange mounted models. Time proven
applications include boom tip winch, rotation
drive, conveyor drive, cranes, elevators and
many other uses.
The Worm is a heat treated alloy steel forging, machined, ground and polished to develop
a smooth work surface with the bronze alloy
worm gear. The worm shaft is mounted on
heavy duty bearings and the output shaft rotates
on bushings.
• DRIVE OPTIONS-Can be driven w ith electric
or hydraulic motor or gasoline engine.
• DEPENDABILITY-All Tulsa Speed Reducers
are warranted to be free of any defect in materials and workmanship for a period of one (1)
year from date of purchase. Service parts are
availab le worldwide through authorized
distributors.
• AUTOMATIC WORM BRAKE-(Optional) can
be provided on Tulsa Speed Reducers which
automatically engages when power is removed.
Oil immersed disk or shoe brakes available.
• Not approved for personnel lifts.
Flange Mount
Low Mount
Upright Mount
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SELECTION CRITERIA
To select the right Tulsa Speed Reducer for your application, first determine the performance requ ired, either from the formulas below or your own engineering data, then
detrermine the type of mounting required, either upright, low mount, or flange mount
Finally, select the proper model from the performance chart on pages 4 and 5. If you need
help with your selection please contact your Tulsa Winch sales representative.
SAMPLE PROBLEM
FORMULAS
T = Torque (Ft. Lbs.)
HP = Horsepower (33,000 Ft. Lbs./Min.)
RPM = Revolutions Per Minute
E = Effective Pulling Radius (ln.) or (Ft. )
R = Ratio of Unit
F = Force (Lbs.)
f2
Output Torque =T = Ex F (in Lbs. or Ft. Lbs. ( ~) )
Horsepower = HP = T x RPM
5252 (constant)
Line Speed = S = .524 (constant) x E x RPM
Torque (out) = T (in) x R x Efficiency (Decimal)
Select the proper Tulsa Speed Reducer to move a
4,000 pound load at a rate of 25 feet per minutP.
using an 8" diameter sheave and a 1" diameter
rope:
Effective Pulling Radius = Sheave radius (4") plus
rope radius (%'') = 4.5"
4 s··
Torque =T = 12 x 4000 = 1,500 Ft. Lbs.
With a known output speed (25 F.P.M.), the line
speed formu la can be used to solve for output
R.P.M.
Line Speed = S = .524 x E x RPM
s
25
RPM = .524 X E = .524 X 4.5 = 10 ·60 RPM
From the performance data chart, a G8S, G1 OOOS
SHEAVE
or G6S Reducer can be selected based on mounting requirement. The data chart shows that the
required output speed (1 0.6 RPM) is approximately
600 RPM input speed, and requires 6.3 input
horsepower.
HOW TO ORDER
SPECIFY:
1. Model (GtOS, G12S. etc.)
2. S1de from wh1ch shaft is to exteod. (View reducer from input
shaft end).
3. Worm shan rotation (clockw•se or counterclockwise) when
output shaft rotation is clockwise or counterclockwise.
Example shown has left hand gear set
4. With or less output shalt
5 Automatic brake-if required.
6. Hydraulic adaptation-if reqUITed.
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PERFORMAN.C E DATA
Mrudmum
Model
Upright
Mount
OutputHP
Output RPM
Input HP
low
Moun1
Output
Flang~
Mounted
G33B
Gea r
Ratio
Torque
(LI>.Ft.)·
36.0
425
60.0
32
OutputHP CB.."'L:TE
Output RPM
Input HP
GSS
Output HP 03SQl. EJ[
Output RPivl
lnput HP
G5D
Ovtpvt HP O&ICI.E1E
Output RPM
Input HP
GST
Ovtput HP
Output RPM
Input HP
G1060
Output HP
Outpul RPM
Input HP
G1030
Output HP
O utput RPM
Input HP
G1020
GGT
20.0
1700
58
Output HP
Output RPM
Input HP
G1242
G9S
42.0
2500
42
30.0
G6S
GSD
1300
32
49
49
52
69
WORM SPEED- RPM (See Note Bel ow)
200
400
500
600
800
1000
1200
0.4
5.3
0.9
0.9
10.5
1.7
1.1
13.2
2.2
1.3
15.8
2.6
1.7
21.1
3.5
2.1
26.3
4.3
2.6
31.6
0.8
1.7
3.3
1.5
6.7
2.1
8.3
3.2
4.0
2.5
10.0
4.8
33
'13.3
6.3
4.1
'16.7
7.9
5.0
20.0
9.5
1.7
6.7
2.4
3.3
13.3
4.8
4 .1
16.7
6.0
5.0
20.0
7.2
6.6
26.7
9.6
8.3
33.3
12.0
9.9
400
14.3
1300
58
76
2.5
10 .0
3.2
5.0
20.0
6.5
6.2
25.0
8.1
7.4
30.0
9.7
9.9
40.0
13.0
12.4
50.0
16.2
14.9
60.0
19.4
60.0
1700
32
52
1.1
3.3
2.1
2.2
6.7
4.1
2.7
8.3
5.2
3.2
10.0
6.2
4.3
13.3
5.4
16.7
10.4
20.0
12.4
6.7
3.1
4.3
13.3
6.3
5.4
16.7
78
6.5
20.0
9.4
26.7
125
10.8
33.3
15.7
12.9
40.0
18.8
76
3.2
10.0
4.2
6.5
20.0
8.5
8.1
25.0
10.6
9.7
30.0
12.7
12.9
40.0
16.9
16 .2
50.0
21 .2
19.4
60.0
25.4
60
2.6
5.6
4.4
5.3
11.1
8.8
6.6
139
'1 1.0
7.9
16.7
13.2
10.6
22.2
17.6
15.9
21.2
44.4
28.6
30.0
21.0
1700
49
69
22
5.3
11.1
7.1
10.6
22.2
14.3
13.2
27.8
17.9
33.3
65
39
7.4
6.0
7.8
14.8
11.9
9.7
18.5
149
11 .6
22.2
17.9
66
82
7.2
13.8
8.9
14.4
27.6
17.6
18.1
34 5
22.0
2 1.7
4 1.4
26.4
6000
44
64
7.6
6.7
15.2
13.3
23.7
19.0
16.7
29.6
22.8
20.0
35.5
6000
60
77
13.8
12.1
34.6
30.3
44.8
41 .5
36 .4
17.9
27.7
24.2
35.9
8.3
6.7
12.8
16.5
13.3
25.6
20.6
16.7
32.0
G1221
2500
56
OutPut HP G10S
OutPut RPM
Input HP
G12S
27.0
2750
45
Output HP G100
Output RPM
Input HP
G12D
14.5
2750
Output HP G19S
Output RPM
Input HP
G18S
G2030
30.0
Output HP G19D
Output RPM
Input HP
G18D
G2017
16.5
74
--
11 .8
30.0
6500
44
64
21.4
8.3
8.6
-
5.2
20.0
Output HP
Output RPM
lr'lpllt HP
Output HP G23S
Output RPM
Input HP
G9D
1300
Etlicicncy%
St.atic Dynamic
6.5
-
538
'
~imum
Uptlghl
Model
Low
FIJngo
Mount
Mount
Mot.11led
0ulJ)ut HP G23D
Outpu t RPM
lnput HP
Output HP G34S
Output RPM
Input HP
G24S
Output HP G340
Output RPM
Input HP
G240
Output
Torque
G<>ar
Rnjo
(Lb. Ftj·
16.5
6500
32.0
9700
Efflcleney 'II.
_ __ WORM SPEED-RPM (See NolO Bolow~)--:-:-::-:-
Sulic
Dynamic
200
400
SOO
60
77
15.0
12.1
19.4
300
37.5
30.3
48.6
11.5
23.1
12.5
36.1
44
64
6.3
1ao
17.5
9700
60
77
21.1
11.4
24.2
38.9
27.3
42.2
229
547
Output HP G64S
Output RPM
Input HP
34.0
16700
44
64
18.7
5.9
29.2
374
, 1.8
58.5
Output HP
G70S
43.0 23 700
44
64
21.0
4 .7
32.8
42.0
9.3
65.6
G80S
50.0
44
64
27.8
4.0
43.4
55.6
8.0
86.9
Output RPM
Input HP
Output HP
36500
Output RPM
lnputHP
'Torque ratings a rc based on inlermittenl winch applicotions only.
Consult Tol$a Wir1ch lor othor applications and for additional enginC\lring intormatlon.
600
800
1000
1200
For app icaaoos wheto worm speeds aoe
las:er h.-,n those Gi'O.>fl. contact Tuls:l
Winch 01 YrAJt Tutsa salo..>S rwresentatve
DIMENSIONAL DATA
LOW MOUNTED TYPE
A
[- B
J
UPRIGHT TYPE
A~
- o=:~
.
E
..J
·~--=
--ct
"--z ~. .
FLANGE MOUNTED TYPE
z
~ I
I I
B
l
: !WD~
~~ll ~~
I
R
e
H
0
r
c
Model
Flange
Nlount
G6
G9
G2000
5.28 2.75 4.00 10.00 0.53
5.12 2.37 4.00 10.00 0.50
3.38 9.13 4.38 12.00 1.00
Low
G300
GS
G1000
G'l200
G12
G18
G24
3-25
5.13
5.78
5.78
6.25
8.07
8.84
1.63 1.06 2.12
2_78 1.25 2.38
3.03 1.50 3.00
3.03 1.50 3.00
3.13 1.50 3.00
4.04 3.00 6.00
4.42 2.63 5.25
G8
G10
G19
G23
G34
G64
G70
Gao
528
6.25
8.08
8.08
8.84
10.00
10.00
11.38
2.53
3.13
4.04
4.04
4.42
5.00
5.00
5.69
1.38
2.00
2.75
2.75
2.38
2.75
275
3.19
WL
WK
s
I
N
G
D
A Upright
T
A
A
8
0
M odel
YID
S Flange
G6
G9
G2000
1.00 1.00 0.25 1.88
1.00 1.00 0.25 225
1.25 1.75 0.31 2.25
G300
1.00 1.25 0.25
0.75 0.94 0.19
1.25 1.38 0.25
1.25 1.38 0.25
1.25 1.50 0.31
1.25 1.50 0.31
1.50 1.75 0.31
H Mount
A F
T
O LOW
A Mount
T
GS
G1000
G1200
G12
G18
G24
F
3.25
4.36
4.19
4.19
4.75
7.50
7.50
G
H
J
K
L
M
N
2.00 4.44
2.00 4.50
2.19 6.00
7.56 4.63
11.50 6.38
1 1.25 6.62
11 .25 6.62
12.38 7.69
15.25 9.69
15.88 10.00
0.00
0.00
0.00
0.00
0.00
1.19
1.13
SO Oulpul Shaft
s
H
-1.25
1.25
1.88
1.88
1.75
225
2.88
Type
A
F
T
Per
Customer
Request
D
A
T
A
Upright
2.75 5.75
4.44 8.69
-1.44 10.00
4.44 10.00
4.71 16.75
5.98 13.50
6.25 15.00
2.88
4.34
!)00
500
838
6.75
7.50
M ode-l
WD
WL
GS
G10
G19
G23
G34
G64
1.00
1.25
1.25
1.25
1.50
1.75
1.25
1.50
1.50
1.50
1.75
2.25
G70
Gao
z
0.53
053
0.53
4X4 11.00 .31-18NC
SX6 10.50 .5-13NC
4X5 13.5<1 .5 -13NC
4X5 13.54 .5-13NC
6.75 17.45 0.53
6.75 20.43 0.64
6.75 20.88 0.78
2.75 4.13 3.<14 12.50 7.88 7.13 4.44 7.50 3.75 4X4 12.34
4.00 5.50 4.67 14.44 9.75 a 44 4,71 9.75 4.88 6.75 14.13
5.50 7.63 628 18.06 12.25 11.00 5.97 14.00 7.00 6.75 20.59
5.50 7.63 6.28 18.06 12.25 11.00 5.97 14.00 7.00 6.75 20.59
4.75 7.00 6.75 18.94 13.00 11.75 6.25 14.00 7.00 6.75 20.84
5.50 8.50 8.78 23.38 17.75 15.99 7.47 18.50 9.25 9.03 26.36
5.50 8.50 8.66 26.44 17.63 15.75 8.97 18.50 9.25 9.03 26.36
6.38 10.50 11.34 32.00 21.50 19.13 10.14 21.50 10.75 10.50 2700
Type
A
e
Type
U Mount
e
s~M
J
WK
0.25
0.31
0.31
0.31
0.31
0.38
1.75 2.25 0.38
2.00 2.25 0.38
0.53
0.53
0.64
0.64
0.78
1.03
1.03
1.16
so Oulput Sha1t
1.88
1.75
2.25
2.44
2.88
3.25
3.63
3.88
Per
Custom91'
Roquest
{u~
!~!~~'"'(finch
~
Tul-sa. Okla. 74147-1617
918-663-5744
Fax.: 918-627-3221
Lilho in U.S.A.
SR-93