INTORQ BFK458 Quick guide

INTORQ BFK458 for NORD Drivesystems
Spring-applied brake with electromagnetic release
Translation of the Original Operating Instructions
www.kendrion.com

Document history
Material number Version Description
33009766 1.0 09/2021 SC First edition for the series
33009766 2.0 05/2022 SC Update of chapters 4.2 and 4.3
Assignments for brake designations
NORD Drive Systems Kendrion INTORQ
BRE 5Nm ≙BFK 458-06
BRE 10Nm ≙BFK 458-08
BRE 20Nm ≙BFK 458-10
Tab.1: Table assigning brake designations of NORD Drive Systems to Kendrion INTORQ
Legal regulations
Liability
¾
The information, data and notes in these Operating Instructions are up to date at the time of printing.
Claims referring to drive systems which have already been supplied cannot be derived from this infor-
mation, illustrations and descriptions.
¾
We do not accept any liability for damage and operating interference caused by:
– inappropriate use
– unauthorized modifications to the product
– improper work on or with the product
– operating errors
– disregarding the documentation
Warranty
Notice
The warranty conditions can be found in the terms and conditions of Kendrion INTORQ
GmbH.
¾
Warranty claims must be made to Kendrion INTORQ immediately after the defects or faults are de-
tected.
¾
The warranty is void in all cases when liability claims cannot be made.
Kendrion INTORQ | BA 14.0225 | 05/2022 2

Spring-applied brakes of type BFK458-06...10
Design E Design N
Product key
Product group: Brakes
Product family: Spring-applied brake
Type: 458
Size: 06, 08, 10
Design/type:
E - adjustable (brake torque can be reduced via torque adjustment ring)
N - not adjustable
B FKINTORQ
Not coded: Connection voltage, hub bore diameter, options
Checking the delivery
After receipt of the delivery, check immediately whether the items delivered match the accompanying pa-
pers.
Kendrion INTORQ does not accept any liability for deficiencies claimed subsequently.
¾
Claim visible transport damage immediately to the deliverer.
¾
Claim visible defects or incompleteness of the delivery immediately to Kendrion INTORQ.
Kendrion INTORQ | BA 14.0225 | 05/2022 3

Contents
1 General information....................................................................................................................................................6
1.1 Using these Operating Instructions.......................................................................................................................6
1.2 Conventions in use ...............................................................................................................................................6
1.3 Safety instructions and notices .............................................................................................................................6
1.4 Terminology used .................................................................................................................................................7
1.5 Abbreviations used ...............................................................................................................................................7
2 Safety instructions .....................................................................................................................................................9
2.1 General safety instructions ...................................................................................................................................9
2.2 Disposal................................................................................................................................................................9
3 Product description..................................................................................................................................................10
3.1 Proper and intended usage ................................................................................................................................10
3.1.1 Standard applications.............................................................................................................................10
3.1.2 Applications with special safety requirements ("Safety Brake") .............................................................10
3.2 Design.................................................................................................................................................................12
3.2.1 Basic module E ......................................................................................................................................12
3.2.2 Basic module N ......................................................................................................................................13
3.3 Function..............................................................................................................................................................13
3.4 Braking and release............................................................................................................................................14
3.5 Project planning notes ........................................................................................................................................14
3.6 Brake torque reduction .......................................................................................................................................14
3.7 Optional configuration.........................................................................................................................................14
3.7.1 Hand-release (optional)..........................................................................................................................14
4 Technical specifications ..........................................................................................................................................15
4.1 operating range for the Kendrion INTORQ spring-applied brake .......................................................................15
4.2 Brake torques .....................................................................................................................................................16
4.3 Characteristics....................................................................................................................................................17
4.4 Switching times...................................................................................................................................................20
4.5 Friction work / operating frequency.....................................................................................................................22
4.6 Electromagnetic compatibility .............................................................................................................................23
4.7 Emissions ...........................................................................................................................................................23
4.8 Hand-release ......................................................................................................................................................24
4.9 Labels on product ...............................................................................................................................................24
Kendrion INTORQ | BA 14.0225 | 05/2022 4

5 Mechanical installation ............................................................................................................................................26
5.1 Design of end shield and shaft ...........................................................................................................................26
5.2 Tools...................................................................................................................................................................27
5.3 Preparing the installation ....................................................................................................................................27
5.4 Installing the hub onto the shaft..........................................................................................................................28
5.5 Mounting the brake.............................................................................................................................................29
5.6 Installing the friction plate (optional) ...................................................................................................................32
5.7 Cover ring assembly ...........................................................................................................................................33
5.8 Mounting the hand-release (retrofitting)..............................................................................................................34
6 Electrical installation................................................................................................................................................35
6.1 Electrical connection...........................................................................................................................................35
6.2 AC switching at the motor – extremely delayed engagement.............................................................................36
6.3 DC switching at the motor – fast engagement....................................................................................................37
6.4 AC switching at mains – delayed engagement...................................................................................................38
6.5 DC switching at mains – fast engagement .........................................................................................................39
6.6 Minimum bending radius for the brake connection cable ...................................................................................40
7 Commissioning and operation ................................................................................................................................41
7.1 Possible applications of the Kendrion INTORQ spring-applied brake ................................................................41
7.2 Function checks before initial commissioning.....................................................................................................42
7.2.1 Function check of the brake ...................................................................................................................42
7.2.2 Release / voltage control........................................................................................................................42
7.2.3 Testing the hand-release functionality....................................................................................................43
7.3 Commissioning ...................................................................................................................................................44
7.4 Operation............................................................................................................................................................44
7.4.1 Brake torque reduction (for the optional adjustable braking torque) ......................................................45
8 Maintenance and repair............................................................................................................................................46
8.1 Wear of spring-applied brakes............................................................................................................................46
8.2 Inspections..........................................................................................................................................................47
8.2.1 Maintenance intervals ............................................................................................................................47
8.3 Maintenance .......................................................................................................................................................48
8.3.1 Brake testing ..........................................................................................................................................48
8.3.2 Checking the air gap ..............................................................................................................................48
8.3.3 Release / voltage....................................................................................................................................49
8.3.4 Adjusting the air gap...............................................................................................................................49
8.3.5 Checking the rotor thickness..................................................................................................................50
8.3.6 Replacing the rotor.................................................................................................................................50
8.4 Spare parts list....................................................................................................................................................51
9 Troubleshooting and fault elimination....................................................................................................................52
Kendrion INTORQ | BA 14.0225 | 05/2022 5

General information
Kendrion INTORQ | BA 14.0225 | 05/2022 6
1 General information
1.1 Using these Operating Instructions
¾
These Operating Instructions will help you to work safely with the spring-applied brake with electro-
magnetic release. They contain safety instructions that must be followed.
¾
All persons working on or with electromagnetically released spring-applied brakes must have the Oper-
ating Instructions available and observe the information and notes relevant for them.
¾
The Operating Instructions must always be in a complete and perfectly readable condition.
1.2 Conventions in use
This document uses the following styles to distinguish between different types of information:
Spelling of numbers Decimal separator Point The decimal point is always used. For ex-
ample: 1234.56
Page reference Underlined, red _____
Reference to another page with additional
information
For example: Using these Operating In-
structions,Page6
Symbols
Wildcard □
Wildcard (placeholder) for options or selec-
tion details
For example: BFK458-□□ = BFK458-10
Notice Important notice about ensuring smooth op-
erations or other key information.
1.3 Safety instructions and notices
The following icons and signal words are used in this document to indicate dangers and important safety
information:
Structure of safety notices:
CAUTION
Icon
Indicates the type of danger
Signal word
Characterizes the type and severity of danger.
Notice text
Describes the danger.
Possible consequences
List of possible consequences if the safety notices are disregarded.
Protective measures
List of protective measures required to avoid the danger.

General information
Kendrion INTORQ | BA 14.0225 | 05/2022 7
Danger level
DANGER
DANGER indicates a hazardous situation which, if not avoided, will result in death or seri-
ous injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE
Notice about a harmful situation with possible consequences: the product itself or sur-
rounding objects could be damaged.
1.4 Terminology used
Term In the following text used for
Spring-applied brake Spring-applied brake with electromagnetic release
Drive system Drive systems with spring-applied brakes and other drive compo-
nents
1.5 Abbreviations used
Letter symbol Unit Designation
FRN Rated frictional force
F N Spring force
I A Current
IHA Holding current, at 20 °C and holding voltage
ILA Release current, at 20 °C and release voltage
INA Rated current, at 20 °C and rated voltage
M4Nm Torque that can be transmitted without slippage occurring (DIN VDE 0580)
MANm Tightening torque of fastening screws
Mdyn Nm Average torque from initial speed to standstill
MKNm Rated torque of the brake, rated value at a relative speed of rotation of 100 rpm

General information
Kendrion INTORQ | BA 14.0225 | 05/2022 8
Letter symbol Unit Designation
nmax rpm Maximum occurring speed of rotation during the slipping time t3
PHW Coil power during holding, after voltage change-over and 20 °C
PLW Coil power during release, before voltage change-over and 20 °C
PNW Rated coil power, at rated voltage and 20 °C
Q J Quantity of heat/energy
QEJMax. permissible friction energy for one-time switching, thermal parameter of
the brake
QRJ Braking energy, friction energy
QSmax JMaximally permissible friction energy for cyclic switching, depending on the op-
erating frequency
RNOhms Rated coil resistance at 20 °C
Rzμm Averaged surface roughness
Sh1/h Operating frequency: the number of switching operations evenly distributed
over the time unit
Shue 1/h Transition operating frequency, thermal parameter of the brake
Shmax 1/h Maximum permissible operating frequency, depending on the friction energy
per switching operation
sLmm Air gap: the lift of the armature plate while the brake is switched
sLN mm Rated air gap
sLmin mm Minimum air gap
sLmax mm Maximum air gap
t1ms Engagement time, sum of the delay time and braking torque:
rise time t1 = t11 + t12
t2ms Disengagement time, time from switching the stator until reaching 0.1 Mdyn
t3ms Slipping time, operation time of the brake (according to t11) until standstill
t11 ms Delay during engagement (time from switching off the supply voltage to the be-
ginning of the torque rise)
t12 ms Rise time of the braking torque, time from the start of torque rise until reaching
the braking torque
tue s Over-excitation period
U V Voltage
UHV DC Holding voltage, after voltage change-over
ULV DC Release voltage, before voltage change-over
UNV DC Rated coil voltage; in the case of brakes requiring a voltage change-over,
UN equals UL

Safety instructions
Kendrion INTORQ | BA 14.0225 | 05/2022 9
2 Safety instructions
2.1 General safety instructions
¾
Never operate Kendrion INTORQ components when you notice they are damaged.
¾
Never make any technical changes to Kendrion INTORQ components.
¾
Never operate Kendrion INTORQ components when they are incompletely mounted or incompletely
connected.
¾
Never operate Kendrion INTORQ components without their required covers.
¾
Only use accessories that have been approved by Kendrion INTORQ.
¾
Only use original spare parts from the manufacturer.
Keep the following in mind during the initial commissioning and during operation:
¾
Depending on the degree of protection, Kendrion INTORQ components may have both live (voltage
carrying), moving and rotating parts. Such components require appropriate safety mechanisms.
¾
Surfaces can become hot during operation. Take appropriate safety measures (to ensure contact/
touch protection).
¾
Follow all specifications and information found in the Operating Instructions and the corresponding
documentation. These must be followed to maintain safe, trouble-free operations and to achieve the
specified product characteristics.
¾
The installation, maintenance and operation of Kendrion INTORQ components may only be carried out
by qualified personnel. According to IEC 60364 and CENELEC HD 384, skilled personnel must be
qualified in the following areas:
– Familiarity and experience with the installation, assembly, commissioning and operation of the
product.
– Specialist qualifications for the specific field of activity.
– Skilled personnel must know and apply all regulations for the prevention of accidents, directives,
and laws relevant on site.
2.2 Disposal
The Kendrion INTORQ components are made of various differing materials.
¾
Recycle metals and plastics.
¾
Ensure professional disposal of assembled PCBs according to the applicable environmental regula-
tions.

Product description
Kendrion INTORQ | BA 14.0225 | 05/2022 10
3 Product description
3.1 Proper and intended usage
3.1.1 Standard applications
Kendrion INTORQ components are intended for use in machinery and facilities. They may only be used
for purposes as specified in the order and confirmed by Kendrion INTORQ. The Kendrion INTORQ com-
ponents may only be operated under the conditions specified in these Operating Instructions. They may
never be operated beyond their specified performance limits. The technical specifications (refer to Techni-
cal specifications,Page15) must be followed to comply with the proper and intended usage. Any other
usage is consider improper and prohibited.
3.1.2 Applications with special safety requirements ("Safety Brake")
A safety certificate for the system must be provided in accordance with DIN EN ISO 13849 whenever the
Kendrion INTORQ spring-applied brakes are being used in applications that have special safety require-
ments. The BFK458-series brakes are suitable for use as service brakes, as holding brakes, and as hold-
ing brakes with emergency-stop functionality for safety applications. The safety characteristics of the
safety brake apply to systems that are designed so that 80% of the characteristic torque of the brake is
sufficient for the safety function. The selected characteristic torque of the brake must, at a minimum, com-
ply with the standard braking torque in order to meet the high safety requirements.
Please note the following conditions:
¾
Proper and intended usage of the brake as described in Standard applications,Page10
¾
Compliance with the installation specifications in these Operating Instructions
¾
The following points are important when mounting the brake with special safety requirements:
– The material and the surface quality of the counter friction surface are listed in the table "End shield
as counter friction surface", in the chapter Design of end shield and shaft,Page26.
– To attach the brake to the motor end shield, use screws of strength class 8.8 which are capable of
handling the tightening torque listed in the table Rated data: Screw set for brake mounted on mo-
tor / friction plate,Page17.
– The fastening screws should be tightened evenly using a standard torque wrench, with a tightening
torque tolerance of +/- 10%.
– The following values apply for the minimum screw-in depths:
Steel: 1.0 x thread diameter
Cast aluminum: 1.5 x thread diameter
– When determining the possible screw-in depths of the fastening screws into the motor flange, the
max. adjustment (according to the table Characteristics for air gap specifications,Page17) and
the projection of the screws when the brake is new must be taken into account.
– The recommended dimensions of the screws and the screw-in depth (including the adjustment re-
serve for rotor wear) into the mounting holes in the motor flange can be found in the table Rated
data: Screw set for brake mounted on motor / friction plate,Page17.

Product description
Kendrion INTORQ | BA 14.0225 | 05/2022 11
¾
Version of the brake with:
– A characteristic torque corresponding to the standard braking torque of that size or higher
– An expected characteristic torque that covers the safety-relevant functionality, even with a drop to
80%
– A noise-reduced rotor with toothed intermediate ring
¾
Compliance with the technical specifications listed in the Technical specifications,Page15 chapter.
– Ambient temperature during operation: -20° to +40°C
¾
The customer is responsible for ensuring that there is a secure connection between the shaft and the
hub.
¾
Follow the information in the chapter Installing the hub onto the shaft,Page28 to ensure a safe shaft-
to-hub connection.
Observe the following notices:
¾
The calculation for the safety application does not consider the wear of the friction lining or the load on
the brake due to emergency stops. These points must be checked separately when configuring the
brake.
The classification of the safety function of our brakes is based on the performance levels PL in accordance
with DIN EN ISO 13849-1:2015. This can be used to support the verifications of the functional safety of
drive systems. The safety characteristic data are available on request.

Product description
Kendrion INTORQ | BA 14.0225 | 05/2022 12
3.2 Design
This chapter describes the variants, design and functionality of the INTORQ BFK458 spring-applied brake.
The basic module E is adjustable (the braking torque can be reduced using the torque adjustment ring).
3.2.1 Basic module E
Fig.1: Design of a INTORQ BFK458 spring-applied brake Basic module E (complete stator) + rotor + hub + flange /
friction plate
ATappet BTorque adjustment ring CStator
DSocket-head cap screw EHand-release (optional) FSleeve bolt
GFlange / friction plate HRotor IHub
JPressure spring KArmature plate

Product description
Kendrion INTORQ | BA 14.0225 | 05/2022 13
3.2.2 Basic module N
Fig.2: Design of a INTORQ BFK458 spring-applied brake Basic module N (complete stator) + rotor + hub + flange /
friction plate
AStator BSocket-head cap screw CHand-release (optional)
DSleeve bolt ERotor FHub
GPressure spring HArmature plate IFlange / friction plate
3.3 Function
This brake is an electrically releasable spring-applied brake with a rotating brake disk (rotor) that is
equipped on both sides with friction linings. In its de-energized state, the rotor is clamped with braking
force applied by pressure springs between the armature plate and a counter friction surface. This corre-
sponds to a fail-safe functionality.
The brake torque applied to the rotor is transferred to the input shaft via a hub that has axial gear teeth.
The brake can be used as a holding brake, as a service brake, and as an emergency stop brake for high
speeds.
The asbestos-free friction linings ensure a safe braking torque and low wear.
To release the brake, the armature plate is released electromagnetically from the rotor. The rotor, shifted
axially and balanced by the spring force, can rotate freely.

Product description
Kendrion INTORQ | BA 14.0225 | 05/2022 14
3.4 Braking and release
During the braking procedure, the pressure springs use the armature plate to press the rotor (which can
be shifted axially on the hub) against the friction surface. The braking torque is transmitted between the
hub and the rotor via gear teeth.
When the brakes are applied, an air gap (sL) is present between the stator and the armature plate. To re-
lease the brake, the coil of the stator is energized with the DC voltage provided. 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.
3.5 Project planning notes
¾
When designing a brake for specific applications, torque tolerances, the limiting speeds of the rotors,
the thermal resistance of the brake, and the effect of environmental influences must all be taken into
account.
¾
The brakes are dimensioned in such a way that the specified rated torques are reached safely after a
short run-in process. After the run-in process, the tolerance range of the brake torque is:-25% / +35%.
¾
If the brake is used as a pure holding brake without dynamic load, the run-in process can be carried
out using 6 to 8 dynamic braking operations within the technical specifications of the brake.
¾
Since the material properties of the friction linings are subject to fluctuations and as a result of different
environmental conditions, deviations from the specified braking torque are possible. This has to be
taken into account by appropriate dimensioning of the tolerances. 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.
¾
If the brake is used as a pure holding brake without dynamic load, the friction lining must be reacti-
vated regularly.
This reactivation can take place, for example, using an emergency stop from maximum drive speed as
part of regular maintenance. Refer to Maintenance intervals,Page47.
¾
If the brake is used as an operating brake with periodic dynamic loads, the friction lining does not need
to be reactivated regularly.
3.6 Brake torque reduction
¾
For the basic module E, the spring force and thus the brake torque can be reduced by unscrewing the
central torque adjustment ring.
¾
For the basic module N, the spring force and thus the braking torque can be reduced by NORD Drive
Systems by removing certain pressure springs.
3.7 Optional configuration
3.7.1 Hand-release (optional)
To temporarily release the brake when there is no electricity available, a hand-release function is available
as an option. The hand-release function can also be retrofitted.

Technical specifications
Kendrion INTORQ | BA 14.0225 | 05/2022 15
4 Technical specifications
4.1 operating range for the Kendrion INTORQ spring-applied brake
¾
Degree of protection:
– The brake is designed for operation under the environmental conditions that apply to IP54 protec-
tion. If a fan cover is mounted to protect the brake from water jets, protection class IP55 can be
reached. Because of the many ways the brake can be used, it is necessary to check the functional-
ity of all mechanical components under the corresponding operating conditions.
¾
Ambient temperature:
– -20 °C to +40 °C (Standard)
Notice
The Kendrion INTORQ BFK458 size 06 to 10 spring-applied brakes described in these operat-
ing instructions may be used in normal operation in areas where there is not expected to be
any explosive atmosphere due to gases, vapors, mist or swirling dust – but if they neverthe-
less did occur, then only rarely and for a short period of time within the meaning of the
ATEX Directive 2014/34/EU – as holding brakes, as holding brakes with emergency stop
functionality, and as service brakes.
Special conditions and instructions for safe operations within the ATEX zone are detailed in
the Kendrion INTORQ Operating Instructions BFK458-ATEX BA14.0217. You can also contact
the Kendrion INTORQ sales department for this information.

Technical specifications
Kendrion INTORQ | BA 14.0225 | 05/2022 16
4.2 Brake torques
NOTICE
Please observe that engagement times and disengagement times change depending on
the brake torque.
Size 06 08 10
Rated torque MK [Nm] of the brake,
rated value at a relative speed of rotation
of 100 rpm
Standard lining (ST)
1.5 E 3.5 E
2 N/E 4 N 7 E
2.5 E 5 E 9 N/E
3 N/E 6 N/E 11 N/E
3.5 E 7 N/E 14 N/E
4 N/E 8 N/E 16 N/E
4.5 E 9 N/E 18 N/E
5 N/E 10 N/E 20 N/E
Torque reduction per detent [Nm], for de-
sign type E 0.2 0.35 0.8
Tab.2: Braking torques and possible braking torque reductions
N design without braking torque adjustment
E design with braking torque adjustment
Reduced braking torque (sLmax approx. 2.5 x sLN)
Standard braking torque for operating brakes and holding brakes with emergency stop
For basic module E, the brake torque can be reduced using the torque adjustment ring in the stator. The ad-
justment ring may only be unscrewed until the maximum protrusion (overhang) hEmax; refer to the Characteris-
tics for air gap specifications,Page17 table and Brake torque reduction (for the optional adjustable braking
torque),Page45.
NOTICE
When using the spring-applied brake as a safety brake: Observe the information concern-
ing the shaft-hub connection in section Applications with special safety requirements
("Safety Brake"),Page10.
When using a standard friction lining, the maximum speeds and friction work (QE) values specified in the
catalog apply for each brake size.
The standard friction lining (ST) is suitable both for pure holding brake applications and for service brake
applications with dynamic loads. Progressive wear should be expected under dynamic load.

Technical specifications
Kendrion INTORQ | BA 14.0225 | 05/2022 17
Size / speed [rpm] 06 08 10
100 3000 7500 12000
1000 3000 7500 12000
1200 3000 7500 12000
1500 3000 7500 12000
1800 3000 7500 12000
3000 3000 7500 12000
3600 3000 7500 12000
Tab.3: ST versions: Maximum permissible friction work, in joules
4.3 Characteristics
Size Rated brake torque at
Δn=100 rpm
Braking torque at Δn0 [rpm] Max. speed
Δn0max
1500 1800 3000 3600 maximum
[%] [%] [%] [%] [%] [%] [rpm]
06
100
87 86 80 79 74 6000
08 85 83 78 76 73 5000
10 83 81 76 74 4000
Tab.4: Characteristics for braking torques, depending on the speed and permissible limiting speeds
Size sLN
+0.1 / -0.05 sLmax Max. adjustment, per-
missible wear distance
Rotor thickness Protrusion
adjustment ring
min.1) max. hEmax
[mm] [mm] [mm] [mm] [mm] [mm]
06
0.2 0.5 1.5
4.5 6.0 4.5
08 5.5 7.0
10 7.5 9.0 7.5
Tab.5: Characteristics for air gap specifications
1) The friction lining is sized so that the brake can be adjusted at least five times.
Size Screw
hole circle
Screw set for mounting
onto the motor/friction
plate
Possible screw-in
depth1)
Tightening torque
Screws ± 10% Complete lever ± 10%
Ø [mm] [mm] [Nm] [Nm]
06 72 3 x M4x40 12 3.0 2.8
08 90 3 x M5x45 13 5.9
10 112 3 x M6x50 18 10.1 4.8
Tab.6: Rated data: Screw set for brake mounted on motor / friction plate
1) Possible screw-in depth = protruding screw plus adjustment reserve for the rotor

Technical specifications
Kendrion INTORQ | BA 14.0225 | 05/2022 18
NOTICE
To attach the brake to the motor end shield, use screws of strength class 8.8 which are
capable of handling the tightening torque.
h7
d12
d11
d13
b
d1
a
l1
d3
d15
d14
d6
h4
l
h2
d
di
da
d2
S LN
h
β
β
h5
Hand-release
installed in standard direction
Fig.3: Basic module N, without adjusting ring; without counter friction surface
Size b dJ7 1)
spec.
dH7 2)
standard
d1d2d3H8 d5d6j7 d7
06 88
10
10/11/12/14/15 3xM4 72 25 91 87
08 106.5 11/12/14/15/20 3xM5 90 32 109 105
10 132 3xM6 112 42 135 130
Size d10 d11 d12 d13 d14 d15 d16 d17 d18 di da
06 31 813 9.6 4xM4 37.7 3x4.4 86 36 40 60
08 41 4xM5 49 3x5.5 106 45 56.1 76.5
10 45 10 12 4xM6 54 3x6.6 132 52 66.1 95
Tab.7: Technical specifications
1) Pre-drilled without groove
2) Standard keyway according to DIN 6885/1 P9, select shaft diameter depending on load type

Technical specifications
Kendrion INTORQ | BA 14.0225 | 05/2022 19
h3
d7 d5
d10
d16
d18 d17
h11
h8
β
β
d1
Hand-release
rotated installation
Fig.4: Base module N with flange, cover ring and sealing plug; with flange; with friction plate
Size h h2h3h4h5
standard
h5
max.
h6
06 36.3 16 15.8 107 – 54
08 42.8 7 16.3 116 – 63
10 48.4 2 9 27.4 132 – 73.3
Size h7h8h9h11 I I1sLN α β
06
23
32.8 56
1.5
18
400 0.2
4xM4 37.7
08 41.3 65 20 4xM5 49
10 42.4 77.8 4xM6 54
Tab.8: Technical specifications
Size Mass of stator Rotor mass JAlurotor
Cpl. Cpl. incl. hand-release
[kg] [kg] [kg] [kgcm2]
06 36.3 16 15.8
08 42.8 7 16.3
10 48.4 2 9 27.4
Tab.9: Characteristics masses
Size Electrical power
P20
1)
Coil voltage
U
Coil resistance
R20 ±8%
Rated current
IN
[W] [V] [Ω] [A]
06 20
24 28.8 0.83
105 530.5 0.194
180 1620 0.111
205 2101 0.098

Technical specifications
Kendrion INTORQ | BA 14.0225 | 05/2022 20
Size Electrical power
P20
1)
Coil voltage
U
Coil resistance
R20 ±8%
Rated current
IN
[W] [V] [Ω] [A]
08 25
24 23 1.04
105 424.4 0.242
180 1296 0.138
205 1681 0.121
10
30 24 19.2 1.25
32 105 331.5 0.31
32 180 1013 0.177
33 205 1273 0.160
Tab.10: Rated data for coil power
1) Coil power at 20 °C in watts, deviation up to +10% is possible depending on the selected connection voltage.
4.4 Switching times
The operating times listed here are guide values which apply to DC switching with rated air gap sLN, warm
coil and standard characteristic torque. The given operating times are average values and subject to varia-
tions. The engagement time t1 is approximately 8 to 10 times longer for AC switching. _
t
t
M
t2
t12
t11
t1
Mdyn
U
0.1Mdyn
Fig.5: Operating/switching times of the spring-applied brakes
t1Engagement time t11 Delay time during engagement
t2Disengagement time (up to M = 0.1 Mdyn)t12 Rise time of the braking torque
Mdyn Braking torque at a constant speed of rotation UVoltage