setting
setting
thethe
standard
standard
Spring-applied brake BFK458
The versatile modular system
1.1 – 443 lb-ft
German Design
for North American
requirements
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
We set the standards
The INTORQ brand stands for reliable brake
solutions of the highest standard. Whether in
electric vehicles, cranes, wind turbines or lift systems –
INTORQ products are used in the most diverse of
applications. Rely on us to create the right solution for your
drive – individually and reliably.
With its broad scope of different versions, the
modular range of INTORQ products is used in many motors
and geared motors and has set standards worldwide. With
the establishment of facilities in Shanghai and Atlanta, we
have also consistently expanded our international presence.
So wherever you are in the world, our network of sales and
service staff is always close at hand to support you.
INTORQ at a glance
❙ Products: electromagnetic brakes and clutches
❙ Sales volume $ 60 million per year
❙ 800,000 units per year
❙ 86.000 square feet production area
❙ Development and production in Aerzen
❙ Companies in Shanghai and Atlanta
❙ 200 employees
❙ 63 sales partners in 49 countries
❙ Certified to DIN ISO 9001 and DIN ISO 14001
❙ UL, CSA, RU available
INTORQ I BFK458 spring-applied brake
BFK458 – The modular system
This modular system forms the basis for a product
range that offers versions tailored for almost
any task. The BFK458 spring-applied brake, as a
standard product, can be used anywhere, but its
modular structure also meets the requirements of
specific industries. Its strength lies in its versatility.
The greatest degree of flexibility is achieved for a
broad range of applications by combining the basic
modules with specific modules. This catalogue is
designed to assist you in selecting and ordering
your desired spring-applied brake quickly and easily.
Fields of application
Electromagnetically released spring-applied
brakes are used wherever masses in motion
have to be decelerated as quickly as possible
or where masses must be held in a defined
position. The braking force is applied by
tappet springs. Thus the braking torque
generated by friction locking remains available
in the deenergised status – even in the event
of mains failure. The brake is released
electromagnetically.
The main components of the modular system are
the two basic modules E (adjustable braking torque)
and N (non-adjustable braking torque).
Wind turbines
Cranes
❙ Brake motors
❙ Conveyors
❙ Cranes
❙ Storage technology
❙ Industrial trucks
❙ Wood working machines
❙ Stage machinery
❙ Vehicles for the disabled
❙ Automation technology
❙ Controlled drives
❙ Gate drives
❙ Escalators
Industrial trucks
Stage machinery
4I5
INTORQ I BFK458 spring-applied brake
INTORQ BFK458-òòò product key
B
F K
4 5 8
òò
-
ò
Brakes product group
Spring-applied brake product family
Type
Size
Design
Size
06, 08, 10, 12, 14, 16, 18, 20, 25
Not coded:
Supply voltage, hub bore, options
Stator design
E –Adjustable (braking torque can be reduced
using torque adjustment ring)
N –Non-adjustable
L – Non-adjustable, LongLife design
Friction plate
Flange
Connection
flange
(double
brake)
Stator, complete
Basic module E
Hand release
Hub
Rotor
Cover ring
Centring flange
(tacho flange)
Stator, complete
Basic module N
Plug
Shaft
sealing ring
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
Contents
Product key����������������������������������������������������������� 4
Brake cover������������������������������������������������������������ 21
List of abbreviations��������������������������������������������� 5
Microswitch ���������������������������������������������������������� 22
Product information���������������������������������������������� 6
Terminal box ��������������������������������������������������������� 23
Functional principle���������������������������������������������� 7
Rectifier type code ������������������������������������������������ 24
Spark suppressor 14.198.00���������������������������������� 24
Technical data
Bridge rectifier + half-wave rectifier������������������������� 25
Rated torques���������������������������������������������������������� 8
Fastening options��������������������������������������������������� 29
Basic module E ����������������������������������������������������� 10
Connection plans.................................................... 30
Basic module N������������������������������������������������������ 12
Supply voltage selection table��������������������������������� 31
2 x basic module N + connection flange �������������� 14
Basic module N + tacho flange������������������������������� 15
Dimensioning
Rated data������������������������������������������������������������� 16
Basics�������������������������������������������������������������������� 32
Operating times ����������������������������������������������16/17
Example calculation����������������������������������������������� 33
Service life and wear���������������������������������������������� 18
Overview�������������������������������������������������������������� 34
Accessories
Hand release/flange/friction plate����������������������� 19
Centring flange/connection flange/cover ring������ 20
List of abbreviations
PN
UN
MK
[W]
Rated coil power at rated voltage and 68°F
[V DC] Rated coil voltage
[lb-ft] Rated torque of the brake at a relative
speed of 100 r/min
∆n0 [r/min] Initial relative speed of the brake
Q
[J]
Heat/energy
QE
[J]Maximum permissible friction work per
switching cycle, thermal rating of the brake
Qsmax[J]
maximum permissible friction work during cyclic switching, depending on the
operating frequency
Sh
[1/h] Operating frequency, the number of
repeated operations per unit time
Shmax [1/h] Maximum permissible operating frequency,
depending on the friction work per operation
SLN [in]
Rated air gap
SHL
[in]
t1
[s]
t2
[s]
t3
t11
[s]
[s]
t12
[s]
Hand-release air gap, setting dimension
of hand-release
Engagement time, the total of the
reaction delay and torque rise time
t1 = t11 + t12
Disengagement time, time from switching
the stator until the torque has reduced
to 0.1 MK
Slipping time to standstill (after t11)
Delay time when connecting,
time from disconnecting the voltage until
the torque begins to rise
Rise time of braking torque, time from
beginning of rise of torque until braking
torque is reached
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
6I7
INTORQ I BFK458 spring-applied brake
INTORQ 155-1
Product information
A powerful and complete range
❙ 9 sizes
❙ Standard voltages [V DC] 24, 96, 103, 170, 180, 190, 205
❙ Graduated torque range from 1.1 – 443 lb-ft
❙ Short delivery times for the complete range thanks to
optimised logistics
❙ Enclosure according to IP00 ... IP55, depending on the
special operating conditions, see technical data sheet
❙ ATEX: In accordance with Group II, Category 3G/D, the
product is suitable for use in potentially explosive
atmosphere of zone 2 (gases and vapours) and zone
22 (dust) for steady-state operation (holding or
parking brake) and temperature class T4.
Versatile
❙ Modular structure for virtually all applications
Torque transmission
❙ Designed for dry running
Quick and easy mounting
❙ Preset air gap
❙ Special machining of the friction surfaces
ensures that the rated torques are achieved after
very few switching operations
❙ No locating bearing is required on the brake
Durable
❙ The insulation system to temperature class F (311°F)
ensures that the winding has a long service life
❙ The brakes are designed for 100% duty time (current
applied to the brake)
Low maintenance
❙ Long rotor/hub connection with low rate of wear and
a tried-and-tested involute gear
❙ Asbestos-free and solvent-free friction lining with low
rate of wear
Reliable
❙ The certified ISO 9001 and ISO 14001 quality
assurance system provides the basis for consistently
high-quality products
❙Production and testing to VDE 0580
E318895
Options
❙ Hand release for all sizes, both directions can be used
for release and mounting (exception: tacho brake)
❙ Noise-reduced designs
❙ Various types of corrosion protection and enclosures
❙ Microswitches used to monitor air gap and wear
(size 12 and above)
❙ Monitoring of Hand release function
❙ Non-standard voltages and bores on request
❙ Pulse width modulation (PWM), sizes 06 – 18
Partial discharge free brake has been developed for
operation with the pulse width modulated DC bus
voltage of a frequency inverter
Rated coil voltage UN=103V DC
LongLife design BFK458-L
❙ Armature plate with low backlash and reinforced
torque support
❙ Tappet springs with guide pins for protection against
shearing forces
❙ Aluminium rotor with toothed intermediate ring:
friction lining and tooth system with low rates
of wear
to - 40°F
CCV (Cold Climate Version), temperatureresistant up to -40˚F
❙ CCV design configurable for all sizes in the
modular system
- Use of chrome-plated friction surfaces
(armature plate and flange)
- Use of temperature-resistant fixing screws is essential
❙ The following components are also approved for
use up to -40˚F
- Rotor with sleeve (noise-reduced)
- Hand release
- Terminal box
- Microswitch
- Caps E and N
- Shaft sealing rings
Functional principle



Basic module E
Adjustment
tube

Rotor



Hub 

Armature plate



Basic module N

Adjustment
tube





Stator




Spring
Fixing screw



Adjustment ring 

Rotor
Stator

Hub 
plate
 Armature

Tappet

Spring
Fixing screw

INTORQ BFK458 spring-applied brakes are singledisk brakes with two friction surfaces. When
deenergised, several springs are used to generate
the braking torque through friction locking. The
brake is released electromagnetically. During
braking, the springs use the armature plate to press
the rotor (which can be shifted axially on the hub)
against the counter friction face. When the brakes
are applied, an air gap sL is present between the
armature plate and the stator. The stator's coil is
energised with DC voltage in order to release the
brake.
The resulting magnetic flux works against the spring
force to draw the armature plate to the stator. This
releases the rotor from the spring force and allows
it to rotate freely. Basic module E supports the use
of the torque adjustment ring to reduce the braking
torque.
BFK458, redundant
BFK458, with terminal box
BFK458-L, LongLife for high
8I9
INTORQ I BFK458 spring-applied brake
Technical data
Rated torques
The basic modules E and N are available in the
graduated torques listed below. A pole shim (brass
film) must be placed between the stator and
the armature plate if you want to achieve short
engagement times at low torques. INTORQ brakes
are dimensioned so that the specified rated torques
can usually be achieved reliably after a short
running-in period. However, as the organic friction
linings used do not all have identical properties
and because environmental conditions can vary,
deviations from the specified braking torques are
Size
06
08
1.1 E
2.6 N/E
10
possible. These must be taken into account in
the form of appropriate dimensioning tolerances.
Increased breakaway torque is common in particular
after long downtimes in humid environments where
temperatures vary. If the brake is being used on
friction surfaces provided by the customer, the rated
torque must be checked. If the brake is to be used
solely as a holding brake without dynamic load,
the friction lining must be reactivated at regular
intervals.
12
14
16
18
20
18 N/E
26 N/E
48 N/E
85 N/E
25
59 E
Rated torque Mk [lb-ft]
the brake, rated value at a
of
relative speed of 100 r/min
129 N/E
1.5 N/E
2.9 E
5.2 N/E
10 N/E
26 N
33 N/E
59 N/E
107 N/E
162 N
1.8 N/E
3.7 N/E
6.7 N/E
13 N/E
30 N/E
41 N/E
74 N/E
125 N/E
195 N/E
2.3 N/E
4.4 N/E
8.1 N/E
17 N/E
33 N/E
44 N/E
85 N/E
148 N/E
221 N/E
2.6 N/E
5.2 N/E
10 N/E
20 N/E
41 N/E
52 N/E
96 N/E
169 N/E
258 N/E
2.9 N/E
5.9 N/E
12 N/E
24 N/E
44 N/E
59 N/E
111 N/E
192 N/E
295 N/E
3.3 N/E
6.6 N/E
13 N/E
27 N/E
48 N/E
66 N/E
122 N/E
214 N/E
328 N/E
3.7 E
7.4 E
15 E
30 E
55 N/E
74 N/E
136 N/E
232 N/E
361 N/E
4.1 E
8.1 E
17 N/E
34 N/E
59 N/E
77 N/E
148 N/E
255 N/E
391 N/E
4.4 N/E
8.8 N/E
92 N/E
173 N/E
295 N/E
443 N/E
❙ N ... Braking torque for the N design
(without torque adjustment ring)
❙ E ... Braking torque for the E design
(with torque adjustment ring)
❙ L ... LongLife design
perating brake
O
(SLmax approx. 2.5 x SLN)
Basic module L, LongLife design
The LongLife design can be configured for sizes
06 to 12 in combination with the specified
rated torques in the modular system. The stator
corresponds to design N; bores and built-on
accessories are not possible at the rear side.
It is not possible to configure a microswitch for size 12.
Standard braking torque
olding brake with emergency
H
stop (SLmax approx. 1.5 x SLN)
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
Basic module E, reduced rated torque
The rated torque on basic module E can be
reduced using the torque adjustment ring
located in the stator. The torque adjustment
ring may only be unscrewed to a maximum
dimension of h1max (see table on page 11).
It should be noted that the engagement and
disengagement times change in accordance with
the rated torque. Torque reduction is independent
of the rated torque used.
Size
06
08
10
12
14
16
18
20
25
Torque reduction
per detent position [lb-ft]
0.15
0.26
0.59
0.96
1.3
1.2
2.7
4.1
4.6
Noise-reduced designs
The noise reduction required in many applications can
be achieved in two ways:
1. Impact-noise-reduced armature plate
The brake's operating noise can be minimised using
special damping elements, which are installed
between the pole face and the armature plate as
shock absorbers.
Features and advantages
❙ Low rate of wear between rotor and hub
thanks to lower backlash
❙ Recommended for frequency inverter operation
❙ Noise-reduced design
❙ Also available in combination with CCV
2. Noise-reduced aluminium rotor
The rotor with plastic sleeve reduces the rattling
noises in the rotor/hub connection. At the
same time, this increases the service life of this
connection.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
INTORQ I BFK458 spring-applied brake
Technical data
40 mm 50
Basic module
E (with torque
adjustment ring)
3
1
2
Without counter
friction surface,
5
6
hand release (as option)
4





30
A
20

10

β
β
Hand release
7
8





β


0
mounted
in standard
B
direction








C













D



a
E
Gr.
b
d H7 Standard
d1
d2
10/11/12/14/15
3xM4
72
d5
d1
08 3/8
106,5
3.46
10
5/8
11/12/14/15/20
3xM4
2.83
3.58 3xM5
3.4390
109
3.43
08
4.19
3/4
3xM5
4.13
10
14 3/8
169
5.20
14
3/4
171
3xM6 20/25/30
4.41
5.28 3xM8
5.12145 5.12
12
5.98
06
dJ7 1)
06 spec.
88
d J7 vorg.
dH7 2)
max
10
b
G
14
10
12
16
18
132
3/8
152
187,6
9/16
218,6
10
14
1
15
20
d2
d5
11/12/14/15/20
3.54
20/25
25/30/35/38
3xM6
5.20
30/35/40/45
4.29
6.10
d6j7
d7
d7
87
87
d8
d8 d9 H9 d10 d11 d12
d9
d10
48,4
2
1.85
3.03
52,4
55,9
115
54,9
58,9
67,5
2
165
92H9 52
12 0.512
24 0.472
14
3x9
169
78 2.04
80,1 2.60
124
1.77 550.394
3x0.26
5.19
2.68165 1.38
66,3
3.74
71,3
77,3
2
196
190
4.53
77,5
85,5
2,25
217
2.76
72,5
223
3.07
148,1 3.15
206
83,1
4.88
97,6
89,1
97,1
104,6 114,6
155
5.91
2.36
150
1.02 H9 1.61
82
40
190 102H9 52
1.57
3.23
217 116
2.05
62
8.74
3/4
1 3/4
6xM8
7.72
8.74
8.54
8.54
4.57
2.44 H9 3.03
20
10.2
1
1 15/16 6xM10 9.06
10.2
10
10
5.31
2.83 H9 3.54
11.9
❙ 1) Pilot bored without keyway
❙ 2) Standard keyway in accordance with DIN 6885/1 P9, selection of the shaft diameter
dependent upon type of load (see the operating instructions)
❙ 3) Ø 1.49 and Ø1 2.75 in, keyway in accordance
with DIN 6885/3 P9
2
❙ 4) Hand release angle tolerance +3°
❙ 5) Recommended lever length for 1.5 MK
3
0.315 0.511 0.378 3x0.21 4.17
52
10
13
12
3x6,6 153
68
70
12
24
14
3x9
194
90
77
14
24
15
4x9
-
-
0.394 0.512 0.472 3x0.26 6.02
H9 2.17
0.472
3x0.35 - 6.653.62254 2.05
254
135 72
90
14 0.945
24 0.551
17 4x11
18
h2
150
H
60
h1 min h1max
3xM6 132
11.9
40
h
da
3xM6 112 135,4
12.1
36
da
di
1
30 3) 3xM8
40/45/50/55/60/65/70
308
6.69
7.68 6xM10
7.48278 7.48
1 1/4
6xM10 10.9
86
di
d18
1
25 9/16
297,6
7.66
2
3x4,4
d17
43,2
16
1 1/8
9,6
d17 d18
50,8
3xM835/40/45/50
5.71
6.65 6xM10
6.50230 6.50
259
11.9
13
d16
39,3
1 1/8
25
1/23)
8
d16
46,8
5.91
31
d13
d13
36,3
6xM8 196
24
d12
42,8
2.36
3xM8 170
52
d11
105
60H9 26
8 0.511
13 0.378
9,6 3x5,5
106
56,1 1.57
76,5
2.05105 0.94
1.22 410.315
3x0.17
3.3845 1.41
130 130 68
35
45 10 13
12 3x6,6 132 52 66,1
95
4.13
91
d6 j7
6.65
20 9/16
252,6
25



Size
F
Schutzvermerk ISO 16016 beachten. Copyright reserved.
10I11
302
180H9 85
16 0.945
24 0.551
18,4 6x11
4.02302 2.05
2.76 120
0.472
3x0.35 - 7.63-
6.50
3.35
H9
4.72
1.77
70,1
104,1
2.67
129,4
149
174
199,1 4.09
254
3.54
106,7
5.87 115,7 127,7
0.551 0.945 0.610 4x0.356) -
-
5.08
6.85
0.551 0.945 0.650 4x0.436) -
-
5.83
8.11
0.630 0.945 0.724 6x0.43 -
-
7.83
10
3
3,5
4,5
❙ 6) The thread in the mounting surface is offset by 30° in relation to the centre axis of the
manual release lever
❙ Recommended ISO shaft tolerances: up to Ø 1.96 in = k6
4
❙ Dimensions in inches
5
over Ø 1.96 in = m6
6
7
8
With
flange,hand
6
7release
7 6
8 7 and
seal ring (as option)
5
6
With
flange,
hand release
friction plate,
9
10
11 With
12
10 9
12
11 10
12 11
(as
option),
mounted
hand
release
(as
option)


 
 


flange
 
 on
8
9
8

 



 
A

A


























 β


β
β 
β
β
β
β



 

A
Hand release
mounted in a
rotated position
Not possible for sizes



18 and 20
B
B
B
C
C
C
D
D
D
E
E
E












































 
β
d12
d13
d16
d17
d18 hd17
di h1d18
da h1max
h1 min
h2h1max
h3 h2h5
h4 max
h5 standard
max
h7 h11
h11
LN h9al
d10
di h da
h h1max
h1
h3
h5h5
standard
max
h6h8 h7
d17 d11
d18 d12
di d13
dad16
min
h2
h3
h4min
h5
standard
h6h4 h7
h8 h6h5h9
l h9l1h8 S
13
4 31
86
Size
h
h1
h1
h2
h3
h4
h5
9,686603x4,4
36,3
max.
9,6
3x4,4
36
40min.
36,3 601 39,3
836 13
86
36 60 40
36,3
39,3 1 43,2
40
39,3
43,2
6 43,2
15,8
1076
h5
5)
h6
h7
h8
h9
l1 Gr.
SlLN
h11
+5°
+5°
l
l1
β
a
Gr.
LN a
l1 S
+5°
SLN F
a
β
+5°
Gr.
b 4)F
F
standard
15,8
- 32,8 54 56
18 10°
400 0618
0,2 400
25° 10°
1
15,8max.
- 23 1,5
5432,8 23
32,8 1,5
1,5
0,2 06
25° 10° 06
- 6 107
54
23 107
18 56
400
0,2 5625°
13
3x5,5
106
4542,8
56,146,8
42,8 1 46,8
7
16,3- 7 116
- 41,3 63 65
1,5 25°
20 10°
400 0820
0,2 400
25° 10°
08
845 13
9,6
3x5,5
4576,556,1
42,8
46,8 1 50,8
16,3– 23 116
- 23 1,5
6341,3
41,3
1,5
0,2 25°
25° 10° 12°
08
5 41
106 9,6
56,1
76,5
50,8
7 50,8
16,3
116
63
20 65
400
06
1.43106 1.55
1.70 76,5
0.039
0.236
0.622 1 4.21
2.15
0.906
1.2923
2.220,2 650.709
16
0.0079
13
12
3x6,6
132
5248,4
66,152,4
48,4 952 52,4
27,4- 9 73,3
132
- 42,4 73,377,8
42,4 23
20 10°
400 1020
0,2 400
25° 10°
132
52 95 66,1
48,4
52,4 2 55,9
2
27,4 23 132
- 23 73,3
42,4 1,5
1,5
0,2 10
25° 10° 10
6 45
132 10
52 13
66,1 12
953x6,6
55,9
9 55,9
27,4
1329
1,5
20 77,8
400
0,277,8
25°
08153
1.69
2.00
0.059
0.276
0.642 2
4.57
13
12
3x6,6
68
70,11.84
54,9115
29,4
3x6,6
153
6811570,1
54,9
58,9 2 67,5
6 52
153 10
68 13
70,1 12
115
54,9
58,9
67,5
2 58,9
9 67,5
29,4
1619
- 9
24
14
3x9
169
78
80,1
124
66,3
71,3
77,3
2
11
33,8
55
14 1243x9
169 2.06
78 80,1
66,3
71,3
77,3
169 12
78 24
80,1
66,3
71,3
77,3
2 0.079
11 33,8
195
- 11
10
1.91
2.20 124
0.354
1.08 2 5.20
24
14
3x9 14
194
9072,5
104,177,5
72,5149
77,5
11 2,25
37 - 11
70
194
90149104,1
72,5
77,52,2585,5
194 12
90 24
104,1
1493x9
85,5
2,25
11 85,5
37
240
12
2.16
2.32
2.66
0.079 0.354 1.16
6.34
24- 14
15
4x9 15 -1744x9
- 83,1
129,4
83,1174
11 3
41,6
77
- 89,1
- 174129,4
83,1
89,1 3 97,1
- 24
129,4
97,1
3 89,1
11 97,1
41,6
279
39411
2490
24120
–
2.48 85 88
0.906
1.6325 88
2.560,3 880.787
0.0079
25°
10°
161
- 47,4
25 10°
40016
0,3 400
25°
10°
29,4 23 161
- 23 1,5
8547,4 23
47,4 1,5
1,5
0,3 12
25° 10° 12
85
400
25°
1225
195
97,9
32
50
101
1,5
30
400
0,3
25°
10°
14
33,8– 32 195
97,9
50 0,3101
1,5 16
0,3 25°
25° 10° 9°14
97,9
50
101
1,51.6732
30 400
25° 10°
1430 400
2.91
0.906
3.06
0.787
0.0079
240
- 53,5 111114
53,5 32
30 10°
600 1630
0,3 600
25° 10°
37 32 240
- 32 111
53,5 1,5
1,5
0,3 16
25° 10° 16
111
1,5
30 114
600
0,3114
25°
–
3.35
1.87
3.48
0.984
16
0.0118
25°
10°
G
G
G
14
2.61
3.04
0.079
0.433
1.30
7.68
3.86146
1.26
1.9732
4.000,4
1.18
0.0118
17
4x11
- 97,6
148,1
97,6206
104,6
11 3,5
48,1
319
32 146
- 148,5
40 10°
600
0,4 600
25°
10°
20
14
17 -206
4x11
- 2.81
- 206148,1
97,6
104,63,5114,6
48,1– 32 416
319
416
68,6
- 16
0,4 25°
25° 10° 9°20
- 24
148,1
104,6
114,6
3,5
11 114,6
48,1
319
41611 146
68,6
148,5
-68,6
40148,5
600
25°
2040
18,4
6x11
-106,7
199,1
106,7254
115,7
12,5 4,5
57,7
445
- 175
50 10°
600
0,5 600
25° 10°
16- 24
- 115,7
- 254199,1
106,7
115,74,5127,7
12,5 170
57,7 32 501
445
50132 170
88,7 0,5
0,5 25
25° 10° 25
199,118,4-2546x11
127,7
4,5
12,5127,7
57,7
445
501
88,7 170175
-88,7 32
50 175
600
25°
2550
16
2.85
3.05
3.37
0.089
0.433
1.48
9.45
–
4.49
1.26
2.11
4.57
1.18
24
0.0118
25°
10°
18
3.27
3.51
3.82
0.108
0.433
1.62
11.0
15.5
4.88
1.26
2.33
5.06
1.38
24
0.0157
25°
9°
20
3.84
4.12
4.51
0.138
0.433
1.87
12.6
16.4
5.75
1.26
2.70
5.89
1.57
24
0.0157
25°
10°
25
4.20
4.56
5.03
0.177
0.492
2.27
17.5
19.7
6.69
Datum/date
6.91
1.97
24
0.0197
25°
10°
Bea/drn
Gepr/chkd
Norm/appr
6
0.906
279
- 128
35 10°
600
0,4 600
25° 10°
41,6 32 394
279
39432 125
59,1 0,4
0,4 18
25° 10° 18
125
59,1 125128
-59,1 32
35 128
600
25°
1835
5
6
7
6
7
8
7
5
-
xxxxxx
Ind./
Anz./
quan.
revision no.
ind.
8
Änder-Nr./
9
8
01.11.2012
01.11.2012
CAD
1.26
Name/name
3.49
Benennung/name
Benennung/name of drawing
Benennung/name
drawing
Datum/date ofName/name
Datum/date
Name/nameof drawing
Strate
Maßblatt BFK458-E
Maßblatt BFK458-E
Maßblatt BFK458-E
Dittrich
01.11.2012
StrateBea/drn 01.11.2012Bea/drnStrate
Gepr/chkd 01.11.2012
Dittrich
Gepr/chkd
01.11.2012
Dittrich
H
H
Standardausführung
/ Baugröße
06 /- Baugröße
25
Standardausführung
06 - 25
Standardausführung / Baugröße
06 - 25
Norm/appr
Norm/appr
CAD
Zeichnungsnummer/drawing
no.
Zeichnungsnummer/drawing
no.
Blatt/sheet
CAD
Zeichnungsnummer/drawing no.
M14.0271
M14.0271 M14.0271
i
i i
-STR xxxxxx
5
01.11.2012
5
STR 01.11.2012 STR
xxxxxx
- 01.11.2012
1
4
Blatt/sheet
Name/
Ind./ Anz./
Name/
Name/ Änder-Nr./
Datum/
Ind./ Anz./ Datum/
Datum/
Änder-Nr./
Zeichnung
Nr. vom gleicher
02.04.1998
ind.
revision
Datei/file
Ersatz fuer/back-up
Zeichnung
Nr.
Zeichnung
gleicherfor
Nr.
vom
02.04.1998
ind.no. quan. date
revisionname
no. M14.0271_BFK458-06...25E_Standard.iam
dateErsatzname
Datei/file
Ersatz
fuer/back-up
for gleicher
date quan.
Datei/file
fuer/back-up
for
name M14.0271_BFK458-06...25E_Standard.iam
M14.0271_BFK458-06...25E_Standard.iam
9
10
9
10
11 10
11
12 11
12
H
Blatt/sheet
1
4
1
4
vom 02.04.1998
12
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
12I13
INTORQ I BFK458 spring-applied brake
3
1
Basic module
N (without2 torque adjustment
ring)
Without 5counter friction6face,

hand release (as option)
4



10
7
β
β
Hand release
8





β




A
20
30
40 mm 50
Technical data

0
mounted
in standard
B
direction






C













D



a
E
Gr.
F
Schutzvermerk ISO 16016 beachten. Copyright reserved.
Size
b
b
d J7 vorg.
d H7 Standard
dJ7 1)
dH7 2) d1
06
88 max. 10
spec.
d2
d1
d3H7
d5
10/11/12/14/15
3xM4
87
31
109 105 105
41
3xM6 112
42
135 130 130
45
10
132
10
2.83
11/12/14/15/20
3.58
3.5420/25
1.25
3xM6 4.13
132
4.29
3/8
08
4.19
12
1523/4
3/8
143xM5
14
169
14
16
187,6
15
5/8
3xM4
0.98
20/25/30
3.43
36
40
60
36,3
3x5,5 106
45
56,1
76,5
42,8
1
4xM5
54
3x6,6 132
52
66,1
95
48,4
2
4xM4 1.49 3x0.17 3.38 1.41 1.57 2.36
2,25
1
3
1
85
254 254
14 24
4xM10 2.95
110 3x0.35
4x11 6.65
- 3.07
- 3.15
148,1 4.88206
6.502592.17
0.47290 0.945
0.55117 4xM6
308 302 302 120 16 24 18,4 4xM10 140 6x11
199,1
254
106,7
97,6
3,5
7.66
9/16
1 1/43) 3xM8
6.69
2.67
7.68
7.48
18
8.74
3/4
1 3/4
7.72
2.95
8.74
20
10.2
1
1 15/16 6xM10 9.06
3.34
4.52
5.28
5.12
40/45/50/55/60/65/70 6xM10 278
6xM10 10.9
86
49
72,5
16
2
37,7
4xM5
83,1
6xM10 6.50
230
6.65
1 1/8
1
4xM4
h
196 190 190 70 12 24
14
4xM6
85
3x9 194 90 104,1
149
5.912232.05
0.39477 0.512
0.47215 4xM5
75
217 217
14 24
4xM8 2.51
95 3x0.26
4x9 6.02
- 2.67
- 2.76
129,4 4.53174
35/40/45/50
5.71
2.36
11.9
h2
68
20 252,6
9/16
1 1/8 253xM8
25
h
3xM8 170
6.65
1/23)
12
0.378
da
9
14
6xM8
13
da
1
6.10
6xM8 5.91
196
30
10
0.511
3x4,4
di
2
5.20
1.96
30/35/40/45
297,6
9,6
d17 d18
d17 d18 di
2
203xM6
25
9,6
13
d16
d16
66,3
3/8
G
13
8
d15
54,9
9/16
1
18 218,6
1.65
8
d14
d14 4) d15
124
5.20
25/30/35/38
0.315
d13
60
5.98
4.41
1.22
d13
50
150 150
10 13
4xM5 1.92
64 3x0.21
3x6,6 4.17
153 1.77
68 1.85
70,1 3.03115
4.131551.61
0.31552 0.511
0.37812 4xM5
10
3xM6
3.43
d12
3xM8 145
12
3/4
d10 d11 d12
32
3xM5
87
d11
25
10
91
d10
90
106,5
3.46
d7
72
08
06
11/12/14/15/20
d2 d3 H7 d5 d6 j7 d7
d6j7

171 165 165
5.12
1.77
115
55
0.394
12
24
0.512
14
0.472
4xM6
75
3x9
169
78
80,1
4xM5 2.12 3x0.26 5.19 2.04 2.60 3.74
7.48
2.76
0.472
0.945
0.551
4xM6 3.34 3x0.35 7.63 3.54 4.09 5.87
8.54
8.54
.03
0.551
0.945
0.610
4xM8 3.74 4x0.356) -
-
5.08 6.85
10.2
10
10
3.54
0.551
0.945
0.650
4xM10 4.33 4x0.436) -
-
5.83 8.11
12.1
11.9
11.9
4.72
0.630
0.945
0.724
4xM10 5.51 6x0.43 -
-
7.83 10
4,5
1
12
H
❙ 1) Pilot bored without keyway
❙ 2) Standard keyway in accordance with DIN 6885/1 P9, selection of the shaft diameter
dependent upon type of load (see the operating instructions)
1
2
3
❙ 3) Ø 1.49 and Ø 2.75 in, keyway in accordance with DIN 6885/3 P9
❙ 4) Hand release angle tolerance +3°
❙ Recommended lever length for 1.5 M
❙ 6) The thread in the mounting surface is offset by 30° in relation to the centre axis of the
manual release lever
4
❙ Recommended ISO shaft tolerances: up to Ø 1.96 in = k6
5
❙ Dimensions in inches
over Ø 1.96 in6= m6
7
8
6
5
6
7
6
7
7
8
With flange,
hand release
and



seal ring
(as option)

8
9
9
8
10
9
11
10
12
11
12
10
11
12
With flange,
hand release
With
friction plate,







(as
option),
mounted
hand
release (as option)








 
A





on flange
A















β
β


β
β
β



β
β




β
β


A


Hand release
mounted in a
rotated position
B
B
C
C
C
D
D
D
E
E
B
Not possible for sizes






18 and 20










































E
β
β
β
d15
d16 d17 d18
di
da
h
h2
h3
h4 h5 standard h5 max h6
h7
h8
h9
h11
l
l1 SLN a +5° Gr.
11 d12d14d13 d15d14 d16d15d17 d16
h4 h5 h5
standard
l LN l1a FSLN aGr. +5°
d13
d18 d17di d18 da di
h da h2 h h3 h2 h4 h3h5 standard
max h5
h6 max h7h6
h8h7
h9h8 h11h9 l h11
l1 S
+5°
5)
4)
Size
h60
h3 1 h46
h5
h54
h9 18 400
l
l1 1 0° S06
a
b
2
6
LN
37,7 3x4,4 86
36 h40
36,3
15,8
107 h5 23h7 32,8 h8 56
1,5
0,2 25°
4xM4
max.6
8
37,7
15,8
107
23 56
32,8 1,556 18 1,5
9,6 134xM49,6 37,7
3x4,4
86 3x4,4
36 8640 36 6040 36,360 standard
1 36,36 115,8
107
54 2354 32,8
400 18
0,2 400
25° 0,2
1 0° 25°
06 1 0°
49
3x5,5 106 45
56,1
76,5 42,8
1
7
16,3
116
63
23
41,3
65
1,5
20 400 0,2 25° 10° 08
8
4xM5
491063x5,5
106
45
56,1 42,8
76,5 1 42,87 116,3 7
16,3
116
23 65
41,3 1,565 20 1,5
20
0,2
10°
9,6 134xM59,6 49
3x5,51.43
45
56,1
116
63 2363 2.22
41,3
4000.0079
0,2 400
25°25°
10° 25°
0812°
0652
0.039
0.23676,5
4.21 132 –
2.15
0.7090,2 25°
16 10°
54
3x6,6 132
66,1
95
48,4
2 0.622
9
27,4
73,3
230.90642,4 1.29
77,8
1,5
20 400
10
10
27,4
132
73,3 42,4
23 77,8
42,4 1,5
77,8 20 1,5
12 134xM512 544xM5
3x6,6541323x6,6
52 132
66,1 52 9566,1 48,495 2 48,49 227,4 9
132
73,323
400 20
0,2 400
25° 0,2
10° 25°
10 10°
64
3x6,6 153
70,1
115
9
29,4
161 –
85
230.90647,4 1.63
88
1,5
25 400
10° 0.0079
12
0868 1.69
0.059 54,9
0.276 2 70,1
0.642
2.48
2.56
0.7870,38825°
16 1,5
25° 25°10°
10
1154.57
29,4
161
23 88
47,4
12 134xM512 644xM5
3x6,6641533x6,6
68 153
70,1 68 115
54,9
2 54,99 229,4 9
161
85 2385 47,4
1,5
25 400 25
0,3 400
25° 0,3
10° 12 10°
75
3x9 169 78
80,1
124
66,3
2
11 33,8
195
97,9
32
50
101
1,5
30 400 0,3 25° 10° 14
12
24
14
4xM6
75
3x9
169
78
80,1
124
66,3
2
11
33,8
195
97,9
32
50
101
1,5
30
400
0,3
10 3x9 1.91
0.07980,1
0.354124 1.08
–
2.91
3.06
0.7871,5 16
14
4xM6
75
169 78
66,3 5.20
2
11 33,8
195
-0.90697,9 1.6732
50
101
30 4000.0079
0,3 25°25°
10° 25°
149°10°
85
3x9 194 90 104,1
149
72,5 2,25 11
37
240
111
32
53,5
114
1,5
30 600 0,3 25° 10° 16
12
24
14
4xM6
85
3x9
194
90
104,1
149
72,5
2,25
11
37
240
111
32
53,5
114
1,5
30
600
0,3
25°
10°
14
4xM6
85
194 174
90
72,5 6.34
2,25 11
37
240
111 128
32
53,5 35 114
1,5 25°
30 10°
6000.0118
0,3 25°25°
10° 1610°
- 12 - 3x9 129,4
2.16
0.079104,1
0.354149
3.35
3.48
0.9840,4
16
95
4x9
83,1
3 1.16
11 41,6
279 – 394
125
320.90659,1 1.87
600
18
G0,4 25° 10°
14
244xM815 954xM84x9 95 - 4x9- 174
129,4 83,1
174 3 83,111 341,6 11 279
41,6
279
394 32
125 59,1
32 128
59,1 - 128 35 -600 35
600
15
129,4
394
125
0,4
25°
10°
18
110 4x11
148,1
206
97,6 3,5
11 48,1
319
416
146
32
68,6 148,5
40 600 0,4 25° 10° 20
14
2.61 4x11
0.079- 0.433
1.30 2067.6897,6 3,5– 11 48,1
3.86 319
1.26 416
1.97 146 4.00
1.18 148,5
16 0.0118
25° 25°9°10°
14
24
17 4xM10
110
- 206
148,1
32
68,6
40
17
148,1
97,657,73,5
11
416
146 175
32
- 25°
40 10°
600 25
0,4 600
25° 0,4
10° 20
140 4xM10
6x11 110
-4x11199,1
254
106,7 4,5
12,5
445 48,1 501 319
170
32
88,7
-68,6 50148,5
600 0,5
16
18,4140
- 0.433
- 254
199,1
2549.45
57,7
501
170 4.57
32 175
88,7
50
0,5
10°
18,4 24
4xM10
199,1
106,7
4,5106,7
12,5 4,5
57,7
501
88,7
50 -6000.0118
0,5 600
25°25°
10° 25°
2510°
4xM10
16 6x11140
2.85- 6x11
0.089
1.48
– 12,5 445
4.49 445
1.26 170
2.1132
1.18 - 17524
18
3.27
0.108
0.433
1.62
11.0
15.5
4.88
1.26
2.33
5.06
1.38
24
0.0157
25°
9°
20
3.84
0.138
0.433
1.87
12.6
16.4
5.75
1.26
2.70
5.89
1.57
24
0.0157
25°
10°
25
4.20
0.177
0.492
2.27
17.5
19.7
6.69
-
Ind./
Anz./
quan.
ind.
6
5
6
7
6
7
8
7
xxxxxx
Änder-Nr./
revision no.
9
8
8
Name/name
01.11.2012
Dittrich
1.2601.11.2012 3.49
Strate
F
F
06
08
10
12
14
16
18
G
20
G
25
Benennung/name of drawing
Bea/drn
Gepr/chkd
Norm/appr
5
Datum/date
Gr.
6.91
Datum/date
1.97
24
0.0197 25°
10°
Maßblatt
BFK458-N
H
BFK458-N
06 - 25 Maßblatt
Maßblatt
BFK458-N
Benennung/name of drawing
Datum/date
Name/name
Benennung/name of drawing
Name/name
Bea/drn 01.11.2012
Strate
01.11.2012Standardausführung
Strate
- Baugröße
Gepr/chkd 01.11.2012
Dittrich
Gepr/chkd 01.11.2012
Dittrichno.
Zeichnungsnummer/drawing
Bea/drn
H
Blatt/sheet
Standardausführung
- Baugröße 06 - 25
H
Standardausführung - Baugröße 06 - 25
2 no.
Zeichnungsnummer/drawing
Blatt/sheet
CADZeichnungsnummer/drawing
no.
Blatt/sheet
4
2
Name/ 5
xxxxxx
Datum/
01.11.2012 STRCAD
2
01.11.2012 STR
5 date - namexxxxxx
Zeichnung gleicher Nr. vom 02.04.1998
Datei/file
Ersatz fuer/back-up for
M14.0271_BFK458-06...25N_Standard.iam
4
Name/
Datum/
Ind./ Anz./
Änder-Nr./
4 02.04.1998
Name/
Ind./ Anz./
Änder-Nr./quan. Datum/
Zeichnung gleicher Nr. vom
ind.
date
Datei/file
Ersatz fuer/back-up
name M14.0271_BFK458-06...25N_Standard.iam
10 revision no.
11
12 for
01.11.2012 STR
ind.
quan.
CAD
i
revision no.
9
date
9
Norm/appr
Norm/appr
M14.0271
i
i
M14.0271
M14.0271
Datei/file
Ersatz fuer/back-up for
name M14.0271_BFK458-06...25N_Standard.iam
10
10
11
Zeichnung gleicher Nr. vom 02.04.1998
11
12
12
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
14I15
INTORQ I BFK458 spring-applied brake
Technical data
2 x basic module N + connection flange
1
2
6
7
8
9
10
11

A
Double brake as redundant braking system,
suitable for use in stage machinery and many
3
5
4
other areas of application. Available with hand
release as an option.

B











C
D







 
E
F
d1
10/11/12/14/15
3xM4
72
25
08
10
11/12/14/15/20
3xM5
90
32
10
10
11/12/14/15/20
3xM6 112
12
14
20/25
14
14
20/25/30
16
15
18
20
25/30/35/38
d3H7 30/35/40/45
20
25
35/40/45/50
d1
06
3/8
5/8
25
3xM4
08
3/8
3/4
3xM5
d2
d2 d3 H7 d6 j7
d14
d15
di
da
h
h2
h14
h15
l
l1
4xM4
37,7
40
60
36,3
1
12
84,6
18
400
0,2
105 4xM5
49
56,1
76,5
42,8
1
12
97,6
20
400
0,2
25° 08
42
130 4xM5
54
66,1
95
48,4
2
13
109,8
20
400
0,2
25° 10
3xM6 132
50
150 4xM5
64
70,1
115
54,9
2
16
125,8
25
400 0,3
25° 12
3xM8 145
60
165 4xM6
75
80,1
124
66,3
2
17
149,6
30
400
0,3
25° 14
190 4xM6
85
149
72,5
2,25
20
165
30
600
0,3
217 4xM8
95
174
83,1
3
20
186,2
35
600
0,4
25° 16
l1
25° 18
254 4xM10
110
206
97,6
3,5
20
215,2
40
600
0,4
25° 20
3xM8 170 68
d14
6xM8 196 75
d6j7
6xM10 230
85
302.8340/45/50/55/60/65/70
6xM10 278
0.98 3.43
4xM4115
3.54
1.25 4.13
4xM5
87
d15
di
104,1
da
129,4
148,1
h
h2
h14
302 4xM10
199,1
1.49
1.57140 2.36
254 106,7
4,5 0.47
25
36.3
0.039
1.92
42.8 1.85
3.03
0.039 0.47 h15
238,4
50
3.34
SLN  Gr.
l
600
0,5
0.709
3.85
0.787
25° 06
SLN
a
25°
25
15.7
0.0079 25°
15.7
0.0079 25°
10
3/8
3/4
3xM6
4.41
1.65 5.12
4xM5
2.12
2.60
3.74
48.4 0.079 0.51 4.33 0.787
15.7 0.0079 25°
12
9/16
1
3xM6
5.20
1.97
5.91
4xM5
2.51
2.76
4.53
54.9 0.079 0.62 4.96 0.984
15.7
0.0118
25°Strate
02.11.2012
14
9/16
1 1/8
3xM8
5.71
2.36
6.50
4xM6
2.95
3.15
4.88
66.3 0.079 0.66 5.90 1.18
15.7
16
2
d H7 Standard
10
dH7 2)
max.
G
1
d J7 vorg.
06
dJ7 1)
spec.
Size
H
Gr.
18
3/4
20
1
25
1 1/43) 3xM8
9/16
2 1/8
3
1 3/4
6xM8
1 15/16 6xM10
2
1/23)
6xM10
6.69
4
2.68
7.72
2.95
9.06
10.9
7.48
5
4xM6
8.54
4xM8
3.35 10.0
4.53 11.9
3.34
6
3.74
dependent upon type of load (see the operating instructions)
5.08
5.87
7
72.5 0.089 0.78 8
Ind./
Anz./
quan.
6.49 ind.
xxxxxx
1.18
Änder-Nr./
revision no.
9
02.11.2012 STR
Name/name
Dittrich
0.0118 25°
CAD
i
0.0118
25°
Benennung/name of drawing
Maßblatt B
Doppelbremse / Ba
Zeichnungsnummer/drawing no.
23.6 M14.0270_BFK458-06...25_Doppelbremse.iam
Datum/
date
Name/
name Datei/file
10
6.85
83.1 0.108 0.78 7.32 1.38
23.6 0.0154 25°
4xM10 4.33
148.1 5.83
8.11 0.138 0.78 8.46 1.57
23.6 0.0154 25°
4xM10 5.51
199.1 7.83
10.0 0.177 0.98 9.37 1.97
23.6 0.0197 25°
❙ 1) Pilot bored without keyway
❙ 2) Standard keyway in accordance with DIN 6885/1 P9, selection of the shaft diameter
❙ 3) Ø 1.49 and Ø 2.75 in, keyway in accordance with DIN 6885/3 P9
❙ Dimensions in inches
4.09
5
-
Datum/date
02.11.2012
Bea/drn
Gepr/chkd
Norm/appr
M14.027
Ersatz fuer/back-up for
11
Zeichnung gle
Technical data
6
7
8
9
10














5
4
Basic module
N + tacho flange





dJ7 1)
spec.
dH7 2)d1
max.
d2
3/8
5/83xM4
2.83
0.984
3.43
4xM4
1.49
08
3/8
3/4
3xM5
3.54
1.26 4.13
4xM5
1.92
10
3/8
3/4
3xM6
4.41
1.65 5.12
4xM5
2.12
1212
9/16
5.20
14 13xM6
20/25
1414
14 1 1/83xM8
20/25/30
9/16
5.71
16
9/16
1 1/43) 3xM8
18
3/4
1 3/46xM8
2025
Size
Gr.
06
06
08
10
16
18
20
25
d J7 vorg.
d H7 Standard
10
10/11/12/14/15
d3H7
d6j7
d1
d14
d15
d2 d3 H7 d6 j7
d19H7 d20h7 d21
d14
di
da
d15 d19 H7 d20 h7 d21
h

h2
di
h12
da
h13 l
h
l1
h2
SLN
h12
a
h13
l
l1
SLN  Gr.
1.57
3.74
3.85
1.57
2.36 1.43 0.039 1.65
0.15 0.709 15.7 0.0079 25°
1.96
4.52
4.56
2.20
3.03 1.69 0.039 1.96
0.15 0.787 15.7 0.0079 25°
130 4xM5
2.36
5.51
54
5.55
2.59
3.74 1.91 0.079 2.24
0.15 0.787 15.7 0.0079 25°
20
400
0,2
25° 10
1.973xM6
5.91
2.36
132 4xM5
50 2.51
150 4xM5
6.37
64
6.49
60
.12
2.75
0.079 2115
162 4.53
165 2.1670,1
0.15
0.984215.7 63,9
0.0118 25°
54,9
4
25
400
0,3
25° 12
145 4xM6
60 2.95
165 4xM6
2.363xM8
6.50
3.14
75
6.96
80
7.12
177 4.88
181 2.5880,1
.03
3.14
0.079 3124
66,3
4
0.15
1.18 215.7 77,3
0.0118 25°
25° 14
6.69
2.68 7.48
4xM6
3.34
3.34
8.03
8.11
4.09
5.87 2.85 0.089 3.27 0.15 1.18 23.6 0.0118 25°
7.72
35/40/45/50
2.95
8.54
4xM8
3.74
3.54
9.17
110
9.33
90
5.07
6.85 3.27 0.108 3.70 0.15 1.38 23.6 0.0154 25°
1 30 1 15/166xM10
9.06
3.356xM10
10.0
3.54 10.7
40/45/50/55/60/65/70
278 4xM10
115 4.33
302 4xM10
140
10.7
120
5.82
0.138 4.29
322 8.11
324 3.84
199,1
254
0.15
1.574,523.6119,2
0.0154 25°
106,7
4
6xM10 10.9
4.53 12.7
12.7
7.83
0.15 1.97 23.6 0.0197 25°
10
10
15
20
25
11/12/14/15/20
11/12/14/15/20
25/30/35/38
1 1/8 2
30/35/40/45
1/23)
3xM4
72
3xM5
90
3xM6 112
3xM8 170
4xM8 196
4xM10 230
11.9
25
32
42
68
75
85
87
4xM4
105 4xM5
190 4xM6
217 4xM8
254 4xM10
4xM10 5.51
4.72
37,7
49
85
95
40
50
60
85
90
95
115
140
204
233
271
98
40
60
116
56,1
76,5
141
66,1
95
206
104,1
149
237
129,4
174
274
148,1
206
10.0 4.20 0.177 4.68
36,3
1
42,3
4
18
400
0,2
25° 06
42,8
1
49,8
4
20
400
0,2
25° 08
48,4
2
57,4
4
30
400
0,3
72,5
2,25
83,5
4
30
600
0,3
25° 16
83,1
3
94,1
4
35
600
0,4
25° 18
97,6
3,5
108,6
4
40
600
0,4
25° 20
50
600
0,5
25° 25
❙ 1) Pilot bored without keyway
❙ 2) Standard keyway in accordance with DIN 6885/1 P9, selection of the shaft diameter
dependent upon type of load (see the operating instructions)
❙ 3) Ø 1.49 and Ø 2.75 in, keyway in accordance with DIN 6885/3 P9
❙ Dimensions in inches
Bea/drn
Gepr/chkd
Norm/appr
Datum/date
Name/name
02.11.2012
02.11.2012
Strate
Dittrich
Benennung/nam
INTORQ I BFK458 spring-applied brake
Technical data
Rated data
Size
PN 68° F
SLN max
SL max
max.
min.1)
Jaluminium rotor
[W]
Operating brake [in]
Holding brake [in]
Adjustment [in]
Rotor thickness [in]
[lb-In2]
06
20
0.0197
0.0118
0.0591
0.1772
0.0513
08
25
0.0197
0.0118
0.0591
0.2165
0.2084
10
30
0.0197
0.0118
0.0591
0.2953
0.6834
12
40
0.0295
0.0177
0.0787
0.3150
1.5377
14
50
0.0295
0.0177
0.0984
0.2953
2.1527
16
55
0.0295
0.0177
0.1378
0.3150
5.1255
18
85
0.0394
0.0236
0.1181
0.3937
9.9093
20
100
0.0394
0.0236
0.1575
0.4724
24.944
25
110
0.0492
0.0295
0.1772
0.6102
68.340
❙ 1) The friction lining is dimensioned so that the brake can be readjusted at least five times.
Rated torques
Size
Rated torque Mk [Nm]
Reduction of rated torque at specified speed to x%
Maximum speed
1500 r/min
3000 r/min
max.
nmax [r/min]
06
2.95
87%
80%
74%
6000
08
5.90
85%
78%
73%
5000
10
11.8
83%
76%
73%
4000
12
23.6
81%
74%
73%
3600
14
44.3
80%
73%
72%
3600
16
59.0
79%
72%
70%
3600
18
111
77%
70%
68%
3600
20
192
75%
68%
66%
3600
25
295
73%
66%
66%
3000
❙ As speed increases, so does wear.
Operating times
The listed operating times are guide values which apply to DC
switching with rated air gap sLr, warm coil and standard rated
Rated torque
torque. The times specified are mean values. The engagement
time t1 is approximately 8 to 10 times longer for AC switching.
t11= Delay time when connecting
t12= Rise time of braking torque
t1 = Engagement time
t2 = Disengagement time
t3 = Slipping time
Torque time rated dependent on
excitation voltage
AC switching
Time
DC switching
Excitation
16I17
Time
Technical data
Operating times
Size
Operating times1) [ms]
Rated torque
MK [lb-ft]
QE [J]
Shue [1/h]
t11
t12
t1
t2
06
2.95
3000
79
15
13
28
45
08
5.90
7500
50
15
16
31
57
10
11.8
12,000
40
28
19
47
76
12
23.6
24,000
30
28
25
53
115
14
44.3
30,000
28
17
25
42
210
16
59.0
36,000
27
27
30
57
220
18
111
60,000
20
33
45
78
270
20
192
80,000
19
65
100
165
340
25
295
120,000
15
110
120
230
390
Connection on the DC sideDisconnection
❙ 1) The operating times specified relate to the use
❙ The maximum permissible friction work per switching cycle QE relates to the standard
of INTORQ rectifiers and coils with a supply voltage
of 205 V DC
friction lining
Aluminium rotor design with low rate of wear
The wear values in the table apply to the
friction lining with low rate of wear and to the
standard rated torque. The friction energies
Size
specified up to the point of maintenance are rough
guide values that are subject to a high degree of
variation depending on various influencing factors.
06
08
10
12
14
16
18
20
25
100 r/min
3000
7500
12000
24,000
30,000
36,000
60,000
80,000
120,000
1000 r/min
3000
7500
12,000
24,000
30,000
36,000
60,000
80,000
120,000
1200 r/min
3000
7500
12,000
24,000
30,000
36,000
60,000
80,000
120,000
1500 r/min
3000
7500
12,000
24,000
30,000
36,000
60,000
24,000
36,000
1800 r/min
3000
7500
12,000
24,000
30,000
36,000
36,000
3000 r/min
3000
7500
12,000
24,000
18,000
11,000
3600 r/min
3000
7500
12,000
7000
QBW
[106 J]
85
158
264
530
571
966
1542
2322
3522
Shue
[h-1]
79
50
40
30
28
27
20
19
15
QE Maximum permissible
friction work per
switching cycle [J]
QBW = Friction energy of brake until maintenance
Shue= Transitional operating frequency
on request
on request
on request
In the region of the load limit (operation > 50 % QE) the value for QBW
can drop as low as 40%.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
18I19
INTORQ I BFK458 spring-applied brake
Technical data
Service life and wear
1.000.000
Friction energy and operating frequency
100.000
105
25
20
10.000
104
10
18
12
Sizes
08
Braking energy QR [J]
Schaltarbeit Q [J]
16 14
06
1.000
103
100
102
10
10
1
1
2
10
10
10
100
Operating frequency S h [h-1]
3
10
1.000
The brake has to be adjusted when sLmax is
reached. The friction energy to be withstood
up to this point is dependent on a number of
factors: in particular, the inertias to be braked,
the braking speed, the operating frequency and
the resulting temperature on the friction surfaces.
For this reason, no universal value for all operating
conditions can be given in respect of the amount
of friction energy that can be handled before
adjustment is required. In addition, increased wear
should be expected with a vertical brake shaft.
The BFK458 can be adjusted when the maximum
permissible working air gap is reached (sLmax). The
dimensioning of the friction lining allows it to be
4
10
10.000readjusted at least 5 times .
SchalthŠufigkeit Sh [h-1]
- Shue
Shmax =
In 1 - QR
QE
(
)
( )
S
Qsmax = QE
- hue
S
1- e h
The maximum permissible operating frequency
Shmax depends on the braking energy QR. The
operating frequency Sh results in the maximum
permissible friction work during cyclic switching
Qsmax. Higher speed and switching energy values
increase wear, because the friction surfaces are
briefly subjected to very high temperatures.
Maintenance
Brakes are components which are subject to a
great deal of wear. When installing the brake, it
must be ensured that it can be easily accessed for
inspection and maintenance purposes. Intervals
between inspections should be set in accordance
with the expected service life and load. For more
information, please see the operating instructions.
Where the amount of friction energy per switching
operation is low, the brake's mechanical
components can impose limitations in terms
of service life. In particular, the rotor/hub
connection, springs, armature plate and sleeves
are subject to operational wear. The expected
service life of the standard design is around
1 million load alternations. Solutions that are
optimised in terms of service life are available
in cases where a longer service life is required
(consult the manufacturer).
BFK458-L
Guaranteed performance data for the LongLife
design
❙ Guaranteed service life of brake mechanism:
10x106 repetitive cycles of operation
15x106 reversing cycles of operation
❙ The brake warranty covers either a period of two
years or the guaranteed number of cycles
– whichever is reached first.
❙ The scope of the warranty in the event of
premature failure covers replacement of the
brake, including a flat-rate replacement fee
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
Accessories
Hand release
The hand release is used to release the brake by
hand and can be retrofitted. The hand release
springs back to its base position automatically
after operation (1). The hand release requires an
additional air gap SHL in order to function; this is
factory-set prior to delivery. Dimension SHL (see
the mounting instructions) must be checked once
the equipment has been mounted.
sLN +0.1
sHL +0.1
[in]
[in]
06
08
10
0.0079
0.0349
12
14
16
0.0118
0.0591
18
20
0.0154
0.0787
25
0.0197
0.0984
Size
-0.05
(1)
sHL
sLN
Flange
A flange can be used if no suitable counter friction
face is available. The flange can also be fitted with
a cover ring.
Friction plate
A friction plate is available for sizes 06 up to and
including 16. This should be used if the counter
face is smooth and machined, but is not suitable as
a friction surface. The plate can be combined with
a cover ring.
Flange
Friction plate
(sizes 06 – 16)
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
20I21
INTORQ I BFK458 spring-applied brake
Accessories
Centring flange (tacho brake)
Basic module N combined with a centring flange is
suitable for mounting a tacho generator.
Connection flange (double brake)
The connection flange can be used to adapt a
second basic module to basic module N; the
resulting double brake is suitable for use in stage
machinery or other applications with increased
safety requirements.
Seal
To a large extent, the cover ring prevents the exit
or ingress of dust, humidity, dirt, etc., out of or
into the braking area. The seal is inserted into
the groove on the stator. If no suitable groove
is available on the counter friction face, we
recommend the use of a flange or a friction plate.
Centring flange
Connection flange
Seal
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
Accessories
Brake cover
A brake cover can be mounted onto basic module
E and basic module N as an option, to protect the
brake from water and dust (degree of protection
acc. to IP65). This design is not available in
conjunction with a hand release and a flange.
Size
d1
d2
d3H8
d4
d5
h
h1
h2
h31)
06
5.31
4.72
3.86
4x0.217
M16x1.5
2.17
1.10
0.650
0.118
08
6.10
5.59
4.65
4x0.217
M20x1.5
2.40
1.34
0.787
0.118
10
7.28
6.54
5.63
4x0.217
M20x1.5
2.83
1.54
0.823
0.118
12
8.07
7.56
6.42
4x0.260
M20x1.5
3.23
1.65
0.906
0.118
14
8.86
8.35
7.20
4x0.260
M20x1.5
3.62
2.01
0.945
0.118
16
9.84
9.29
8.19
4x0.260
M20x1.5
3.86
2.05
0.984
0.118
18
11.2
10.6
9.37
4x0.260
M20x1.5
4.53
2.36
1.14
0.118
20
13.0
12.4
11.1
4x0.354
M20x1.5
5.16
2.72
1.38
0.118
25
15.4
14.5
12.9
4x0.354
M20x1.5
5.59
3.07
1.57
0.118
❙ 1) Recommended recess length on motor end shield
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
INTORQ I BFK458 spring-applied brake
1
40 mm 50
22I23
5
4
6
7
8
A
0
10
20
30
Accessories
3
2
Microswitch
B
Mounting the microswitch onto basic module E
The brake can be fitted with a microswitch for the
purpose of monitoring the release or wear. The
microswitch can be built into the circuit as an NC
contact or an NO contact.
C
A
3
2
5
4
6
7
8
9
10
0
B
11
12

B
E
C
10
A
As of June 2012, a new small microswitch (with UL
acceptance) is in use, which is perfectly adapted
to the contour of the brake. The old switch design
can be converted by connecting an adapter to the
same threaded holes.
D
20
30
40 mm 50
1


Dimensions
C
F
Size
12
14
16
18
20
25
Overall radius r
3.17
3.48
3.90
4.43
5.23
6.10
D
Schutzvermerk ISO 16016 beachten. Copyright reserved.
❙ Dimensions in inches
E
Schutzvermerk ISO 16016 beachten. Copyright reserved.
F
G
H
D

G
Tol.Maß/
tol. size
H

E

Ind./
ind.
Microswitch for hand release monitoring in
combination with basic module N
1
2
3
4
5
4
6
7
Anz./
quan.
8
F
Gate drives, for instance, are provided with brakes
with hand release, and a microswitch for
monitoring the hand release. In this case, the
hand release must make it possible to move
the gate to the desired position in manual
operation, e.g. using a crank. This manual
operation has to be detected via a microswitch,
whose switching signal must be combined with the
motor control so that the motor can be prevented
from starting (thus also preventing any possible
injury to the operator). The microswitch for hand
release monitoring is a built-on option.
1
3
2
5
The fixing bracket is screwed onto the stator via the
threaded holes on the rear face. The fixing bracket
enables a microswitch to be fastened to it. The two
directions of release, towards and away from the
motor, can be implemented by using different fixing
brackets and microswitch settings.
G
Allgemeintoleranzen/
general tolerance
Oberflächen/
surface
DIN ISO 1302
Tol.Maß/
Abmaß/
Tol.Maß/
Abmaß/
tol. size
deviation
tol. size
deviation
Datum/date
X
Rz25
Y
Rz6,3
Z
Rz1
Name/name
Maßstab/scale
Gewicht/weight
Werkstoff/material
Benennung/name of drawing
Bea/drn
Gepr/chkd
H
Norm/appr
CAD
Ind./
ind.
6
7
8
Anz./
quan.
Änder-Nr./
revision no.
9
Datum/
date
Name/
Zeichnungsnummer/drawing no.
Blatt/sheet
i
name Datei/file
BMK45816-001E_MS.iam Ersatz fuer/back-up for
10
11
12
Accessories
Terminal box in combination with basic module N
The connecting cables can easily be integrated
into higher-level controls via the terminal box
(brake sizes 12-25) in order to support different
wiring options (total of 3 inputs/outputs). 2/4pole terminal strips, 4-pole half-wave and bridge
rectifiers and a microswitch connection can be
integrated into the terminal box at the customer's
request.
The terminal box is mounted on the spring-applied
brake using a fixing bracket and screws, as shown
in the illustration. You can select the mounting
angle according to your requirements by using the
assembly kit.
The terminal box is shown
offset by 30°
Size
12
14
16
18
20
25
b
-0.197
0.217
0.492
0.906
1.48
1.79
h
4.80
5.12
5.59
6.10
6.85
7.80
r
4.96
5.28
5.75
6.24
6.97
7.91
❙ Dimensions in inches
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
24I25
INTORQ I BFK458 spring-applied brake
Accessories
Bridge rectifiers and half-wave rectifiers
Type code
B
E
G
–
5
6
1
–
440
Brake
Electronics
Rectifier
1-Bridge rectifier
2-Half-wave rectifier
5-Bridge/half-wave rectifier
4-pole
6-pole
1-Mounting position horizontal
2-Mounting position vertical
3-Mounting position horizontal with snap-in stud
440 Voltage 440 V AC
INTORQ 14.198.00 universal spark suppressor
The universal spark suppressor limits the induced voltage arising when
inductive direct current consumers are switched off on the DC side.
These induced voltages can damage coils and switches. VDE 0580
INTORQ
Coil voltage
[V DC]
Max. connection Max. coil
voltage
power [W]
14.198.00.01 24 – 50
60 V~

14.198.00.02 50 – 120
250 V~
110 110 14.198.00.03
120 – 200
400 V~
110
14.198.00.04
200 – 250
555 V~
110

Capacitor-
voltage
250 V~

630 V  ~
therefore requires that, in order to avoid impermissibly high switchoff voltages and overvoltages, suitable protective measures must be
provided by the user. The universal spark suppressor is available in 4
versions for the following voltage ranges:
b
b1
approx.
d
e
approx.
h
l
l1
m
approx. [lb]
0.335
0.492
0.027
0.886
0.728
1.04
0.984
0.015
0.591
0.827
0.027
1.48
1.02
1.63
0.787
0.049
1000 V~
0.511
0.787
0.027
1.48
0.945
1.63
0.591
0.037
~
0.511
0.787
0.027
1.48
0.945
1.63
0.591
0.022


1000 V 
Dimensions
Wiring example
Parallel to contact
Spark suppressor
14.198.00.XX

Parallel to coil


-
Accessories
Bridge rectifiers and half-wave rectifiers, 4-pole
Dimensions
BEG-142/143-270
BEG-242/243-555
Only for 143-270 or 243-555
INTORQ
BEG-142/143-270
BEG
Bridge rectifiers, 4-pole
BEG-142-270 vertical mounting position
BEG-143-270 horizontal mounting position with
snap-in stud
Half-wave rectifiers, 4-pole
BEG-242-555 vertical mounting position
BEG-243-555 horizontal mounting position with
snap-in stud
Application area
Current supply for spring-applied brakes from AC
mains (normal excitation)
Example: 103 V coil on 110 V mains
Application area
Current supply for spring-applied brakes from AC
mains (normal excitation)
Example: 205 V coil on 460 V mains
Technical data
Max. supply voltage
270 V~
Max. DC current at 140°F
1.0 A
Max. ambient temperature
-13°F to +176°F
For the selection of associated coil voltages,
please refer to the table
Technical data
Max. supply voltage
555 V~
Max. DC current at 140°F
1.0 A
Max. ambient temperature
-13°F to +176°F
For the selection of associated coil voltages,
please refer to the table
The rectifiers are protected against overvoltage by
input and output varistors.
The rectifiers are protected against overvoltage by
input and output varistors.
Ug =
U~ 230 V~
=
= 205 V DC
1.11 1.11
Ug =
U~ 400 V~
=
= 180 V DC
2.22 2.22
26I27
INTORQ I BFK458 spring-applied brake
Accessories
Bridge rectifiers, 6-pole
Dimensions
BEG-162-270
BEG-161-270
INTORQ
INTORQ
BEG-161-270
BEG-161-270
BEG
BEG-162-270
BEG-162-270 BEG
Bridge rectifiers, 6-pole
BEG-162-270 vertical mounting position
BEG-161-270 horizontal mounting position
Application area
Current supply for spring-applied brakes from AC
mains (normal excitation)
Example: 103 V coil on 110 V mains
Technical data
Max. supply voltage
270 V~
Max. DC current at 140°F
0.75 A
Max. ambient temperature
-13°F to +176°F
The rectifiers are protected against overvoltage by
input and output varistors.
BEG-162-270/161-270/
262-460/261-460 rectifiers also contain the
required spark suppressor.
For the selection of associated coil voltages,
please refer to the table
1.11
1.11
Accessories
Half-wave rectifiers, 6-pole
Dimensions
BEG-262-460
BEG-262-555
BEG-261-460
BEG-261-555
INTORQ
BEG-262-460
INTORQ
BEG-261-460
BEG
BEG-262-460
BEG
Half-wave rectifiers, 6-pole
BEG-262-460 vertical mounting position
BEG-261-460 horizontal mounting position
BEG-262-555 vertical mounting position
BEG-261-555 horizontal mounting position
Application area
Current supply for spring-applied brakes from AC
mains (normal excitation)
Example: 205 V coil on 460 V mains
Technical data
Max. supply voltage
Max. DC current at 140°F
Max. ambient temperature
BEG-261-460
460 V~/555 V~
0.75 A
-13°F to +176°F
The rectifiers are protected against overvoltage
by input and output varistors. BEG-162-270/161270/262-460/261-460 rectifiers also contain the
required spark suppressor.
For the selection of associated coil voltages,
please refer to the table
Ug =
U~ 400 V~
=
= 180 V DC
2.22 2.22
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28I29
INTORQ I BFK458 spring-applied brake
Accessories
Bridge/half-wave rectifier
Once a set overexcitation time has elapsed, the bridge/half-wave
rectifiers switch from bridge rectification to half-wave rectification.
Rectifier type
Supply voltage
Overexcitation
Coil voltage
BEG-561-255-030
BEG-561-255-130
BEG-561-440-030-1
This makes it possible to improve switching performance or
reduce power in accordance with coil dimensioning.
Holding current derating
Size
Coil voltage
[V AC]
[V DC]
230
103
06 to 25
400
180
06 to 25
Size
[V DC]
06 to 14
205
16 to 25
–
The information in this table is valid for the BFK458 with standard rated torque and for designs without pole shim (assignment for other brakes on request).
Dimensions
Connection diagrams
AC switching
INTORQ
DC switching
BEG
Technical data
Mains
Rectifier type
Output voltage with bridge rectification
0.9xU1
Output voltage with half-wave rectification
0.45xU1
Ambient temperature (storage/operation) [°F] -13° to +176°
Type
Bridge
Coil
Mains
Coil
In the case of switching on the DC side (fast
engagement), switching must also occur on the supply side.
Otherwise, overexcitation will not occur on restarting.
Input voltage U1
(40 Hz to 60 Hz)
Max. current lmax.
min
[V~]
Rated
[V~]
max
[V~]
Bridge
[A]
Half-wave
[A]
BEG-561-255-030
BEG-561-255-130
160
230
255
3.0
1.5
BEG-561-440-030-1
230
400
440
1.5
0.75
Overexcitation time to (±20%)
at U 1 min
[s]
at U 1 Rated
[s]
at U 1 max
[s]
0.430
0.300
0.270
1.870
1.300
1.170
0.500
0.300
0.270
Accessories
Fastening options
4-pole rectifier
Brake
Bore Ø 0.169
Fastening options
6-pole rectifier and bridge/half-wave rectifier
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
30I31
INTORQ I BFK458 spring-applied brake
Accessories
Connection diagrams
DC switching
Bridge rectifiers
BEG-162-270
BEG-161-270
Half-wave rectifiers
BEG-262-460
BEG-261-460
Also for
star connection
With half-wave rectifier
BEG-262-460
BEG-261-460
Coil 103 V
180 V
AC switching
Bridge rectifiers
BEG-142-270
BEG-143-270
Also for
star connection
Half-wave rectifiers
BEG-242-555
BEG-243-555
Also for
star connection
With half-wave rectifier
BEG-242-555
BEG-243-555
Coil 103 V
180 V
AC switching parallel to the motor
Half-wave rectifiers
BEG-242-555
BEG-243-555
Bridge rectifiers
BEG-142-270
BEG-143-270
Also for
star connection
With half-wave rectifier
BEG-242-555
BEG-243-555
Coil 103 V
Accessories
Supply voltage selection table for bridge rectifiers and half-wave rectifiers
Rectifier type and rated coil voltage for mains voltage
AC
voltage
Rectifier
V AC
Rectifier type
4-pole
Spark suppressor
Rectifier type
6-pole
Coil
rated
voltage ± 10%
1 A at 140°F
INTORQ
0.75 A at 140°F
V DC
42 V
Half-wave
BEG-243/242-555
14.198.00.01
BEG-262/261-460
20 V
48 V
Bridge
Half-wave
BEG-142/143-270
BEG-243/242-555
14.198.00.01
14.198.00.01
BEG-162/161-270
BEG-262/261-460
42 V
20 V
110 V
Bridge
BEG-142/143-270
14.198.00.02
BEG-162/161-270
103 V
220 V
Bridge
Half-wave
BEG-142/143-270
BEG-243/242-555
14.198.00.04
14.198.00.02
BEG-162/161-270
BEG-262/261-460
205 V
103 V
230 V
Bridge
Half-wave
BEG-142/143-270
BEG-243/242-555
14.198.00.04
14.198.00.02
BEG-162/161-270
BEG-262/261-460
205 V
103 V
240 V
Bridge
Half-wave
BEG-142/143-270
BEG-243/242-555
14.198.00.04
14.198.00.02
BEG-162/161-270
BEG-262/261-460
215 V
103 V
255 V
Bridge
BEG-142/143-270
14.198.00.04
BEG-162/161-270
225 V
277 V
Half-wave
BEG-243/242-555
14.198.00.03
BEG-262/261-460
127 V
290 V
Half-wave
BEG-243/242-555
14.198.00.03
BEG-262/261-460
127 V
380 V
Half-wave
BEG-243/242-555
14.198.00.03
BEG-262/261-460
180 V
400 V
Half-wave
BEG-243/242-555
14.198.00.03
BEG-262/261-460
180 V
415 V
Half-wave
BEG-243/242-555
14.198.00.03
BEG-262/261-460
180 V
420 V
Half-wave
BEG-243/242-555
14.198.00.03
BEG-262/261-460
180 V
440 V
Half-wave
BEG-243/242-555
14.198.00.04
BEG-262/261-460
205 V
460 V
Half-wave
BEG-243/242-555
14.198.00.04
BEG-262/261-460
205 V
480 V
Half-wave
BEG-243/242-555
14.198.00.04
BEG-262/261-555* 215 V
500 V
Half-wave
BEG-243/242-555
14.198.00.04
BEG-262/261-555*
225 V
555 V
Half-wave
BEG-243/242-555
14.198.00.04
BEG-262/261-555*
250 V
❙ * Spark suppressor without capacitor. For optimum interference suppression, we recommend
the use of spark suppressor 14.198.00.04.
Max. rated coil voltage: 250 V
Standard coil rated voltages: 24, 96, 103, 170, 180, 190, 205 V
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
32I33
INTORQ I BFK458 spring-applied brake
Model overview
BFK458 spring-applied brake
INTORQ BFK458-òòò
Size
ò
Design
ò E (with torque adjustment ring) ò N (without torque adjustment ring)
Voltage
ò 24 V
Braking torque
1.1 – 443 lb-ft (see torque graduations)
Cable length
ò Standard (from 4 inches – 40 inches in 4 inches steps,
06
ò 08
ò 96 V
ò 10 ò 12
ò 103 V
ò 170 V
ò 14
ò 180 V
ò 16
ò 190 V
ò 18
ò 20
ò 25
ò 205 V
from 40 inches – 100 inches in 10 inches steps)
Armature plate
Microswitch
Terminal box
ò Standard
ò Hard chrome-plated (size 06 and above)
ò With pole shim/brass film
ò Noise-reduced
(O-ring design)
ò Switching function monitoring (size 12 and above)
ò Wear monitoring (size 12 and above)
ò Hand release monitoring, direction of release away from motor (sizes 06-25)
ò Hand release monitoring, direction of release towards motor (sizes 06-10)
ò Mounted (size 12 and above)
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
Temperature resistance -40˚F
ò With hard chrome-plated friction surfaces (armature plate and flange are essential)
ò With temperature-resistant fixing screws
Rotor
ò Aluminium
Low rate of wear
ò Aluminium
Hub
ò Noise-reduced
(rotor with sleeve)
ò Noise-reduced
(rotor with sleeve)
For bore diameter, see Dimensions
ò For mounting onto the flange
ò For mounting onto the motor/friction plate
ò For flange with through hole (up to and including size 16)
ò For connection flange/double brake
Terminal box
ò As mounting kit
Fixing
screw set
Flange
Sealing
ò Friction plate (up to and including size 16)
ò Tacho flange
ò Seal
ò Cap
ò Flange
ò Connecting flange double brake
ò Shaft sealing ring (shaft diameter on request)
ò Brake cover
Electrical accessories
ò 4-pole without snap-in stud ò 6-pole vertical, integrated spark suppressor
ò 4-pole with snap-in stud
ò 6-pole horizontal, integrated spark suppressor
ò 4-pole without snap-in stud ò 6-pole vertical, integrated spark suppressor
ò 4-pole with snap-in stud
ò 6-pole horizontal, integrated spark suppressor
Spark suppressor
ò Yes
Bridge rectifier
Half-wave rectifier
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.actechdrives.com - Email: info@actechdrives.com
34I35
INTORQ I BFK458 spring-applied brake
Example applications
INTORQ brake systems have been key
players in the growth market of wind
Whenever and wherever cranes move,
INTORQ brakes ensure secure braking and
precise stops