Inspection Of The Electromagnetic Brake - Hitachi L Series Service Manual

6-5. Inspection of the electromagnetic brake

Please refer to ' Figure 1' and check the wear and operation status of each part. The brake gap is set to an
appropriate value at shipment, however, it will become larger due to wear of the lining etc. with use. When the slip
amount from the time of releasing the push-button to when the hoisted load stops, exceeds the limit given in ' Table
1', please adjust.
Table 1: Appropriate slip value and limiting slip value (mm) Table 2 : Electromagnetic brake gap (mm)
Appropriate slip value 5 - 15mm Appropriate gap 0.3 - 0.5
Limiting slip value 20mm Limiting gap 1.0
Brake wheel Brake base
Brake disc
Lock washer
Brake gap
Solenoid
Screw
U-nut
Brake spring
Brake stud
Figure 1 : Structure of the brake
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