Maintenance/repair
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| BA 14.0196 | 05/2013
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7.2
Inspections
To ensure safe and trouble-free operation, spring-applied brakes must be checked and
maintained at regular intervals. Servicing can be made easier if good accessibility of the
brakes is provided in the plant. This must be considered when installing the drives in the plant.
Primarily, the necessary maintenance intervals for industrial brakes result from the load during
operation. When calculating the maintenance interval, all causes for wear must be taken into
account,
42. For brakes with low loads such as holding brakes with emergency stop, we
recommend a regular inspection at a fixed time interval. To reduce the cost, the inspection
can be carried out along with other regular maintenance work in the plant if necessary.
If the brakes are not maintained, failures, production losses or damage to the system may
occur. Therefore, a maintenance concept adapted to the particular operating conditions and
brake loads must be defined for every application. For the spring-applied brakes, the
maintenance intervals and maintenance operations listed in the below table must be provided.
The maintenance operations must be carried out as described in the detailed descriptions.
7.2.1
Maintenance intervals
Type
Time interval
BFK455-28
for service brakes:
for holding brakes with emergency stop:
|
according to service life calculation
|
or else every six months
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after 4000 operating hours at the
latest
|
at least every two years
|
after 1 million cycles at the latest
Maintenance
Inspections if brake is built-on:
Inspections after brake has been removed:
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Check release function and control
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Measure air gap
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Measure rotor thickness (replace
rotor, if necessary
|
Thermal damage of armature plate
or flange (dark-blue tarnishing)
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45
45
|
Check clearance of the rotor
gearing (replace worn-out rotors
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Play of torque plate at sleeve bolts
and armature plate
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Check springs for damage
|
Check armature plate and
flange/end shield
– Levelness < 0.1 mm
– Max. run-in depth = rated air gap
of brake size
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Summary of Contents for BFK455
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