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48 – EN ABB Motors and Generators |
3GZF500730-70 rev. C RU-EN 01-2016
TROUBLE
CAUSE
WHAT TO DO
Hot bearings
Bent or sprung shaft
Straighten or replace shaft.
Excessive belt pull
Decrease belt tension.
Pulleys too far away from shaft
shoulder
Move pulley closer to motor bearing.
Pulley diameter too small
Use larger pulleys.
Misalignment
Correct by realigning the drive.
Insufficient grease
Maintain proper quality and amount of grease in
bearing.
Deterioration of grease or lubricant
contaminated
Remove old grease, wash bearings thoroughly in
kerosene and replace with new grease.
Excess lubricant
Reduce quantity of grease: bearing should not be more
than half full.
Overloaded bearing
Check alignment, side and end thrust.
Broken ball or rough races
Clean housing thoroughly, and then replace bearing.
Summary of Contents for M2A series
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