Maintenance and repair
Kendrion INTORQ | BA 14.0224 | 02/2021
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8.2
Inspections
To ensure safe and trouble-free operations, the spring-applied brakes must be checked at regular intervals
and, if necessary, replaced. Servicing at the facility will be easier if the brakes are made accessible. This
must be considered when installing the drives in the plant.
Primarily, the required maintenance intervals for industrial brakes result from their load during operation.
When calculating the maintenance interval, all causes of wear must be taken into account. Refer to the ta-
ble Causes for wear, Page 37 in the chapter Wear of spring-applied brakes, Page 37. For brakes with low
loads (such as holding brakes with emergency stop function), we recommend a regular inspection at a
fixed time interval. To reduce costs, the inspection can be carried out along with other regular mainte-
nance work in the facility.
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.
8.2.1
Maintenance intervals
Versions
Service brakes
Holding brakes with emergency stop
BFK551
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
emergency stops.
8.3
Maintenance
Notice
Brakes with parts must be replaced completely.
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.
