Maintenance and repair
Kendrion INTORQ | BA 14.0217 | 07/2021
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If there is a requirement for a longer service life, service life-optimized solutions are available (consult with
the manufacturer).
Failures, production losses or damage to the system may occur when the brakes are not serviced. There-
fore, a maintenance strategy that is adapted to the particular operating conditions and brake loads must
be defined for every application. For the spring-applied brakes, the maintenance intervals and mainte-
nance operations listed in the table below must be followed. The maintenance operations must be carried
out as described in the detailed descriptions.
9.2.1
Maintenance intervals
WARNING
In safety-relevant applications that have periodic torque surges (e.g. due to dynamic brak-
ing processes), the rotors must always be replaced after 2 million cycles or 10 years at the
latest.
Versions
Service brakes
Holding brakes with emergency stop
BFK458-□□ E / N
BFK458-□□ L
¾
according to the service life
calculation
¾
at least every 2 years
¾
or else every six months
¾
after 1 million cycles at the latest*
¾
after 4000 operating hours at
the latest
¾
Plan shorter intervals for frequent emer-
gency stops.
* NOTICE: 10 million cycles for the L design type
9.3
Maintenance
Notice
Brakes with defective armature plates, springs or flanges must be completely replaced.
Observe the following for inspections and maintenance works:
¾
Contamination by oils and greases should be removed using brake cleaner, or the brake
should be replaced after determining the cause. Dirt and particles in the air gap between
the stator and the armature plate endanger the function and should be removed.
¾
After replacing the rotor, the original braking torque will not be reached until the run-in op-
eration for the friction surfaces has been completed. After replacing the rotor, the run-in ar-
mature plates and the flanges have an increased initial rate of wear.
