What are the precautions for regular maintenance of bearings?

First of all, when checking the bearing, it is necessary to judge whether the secondary bearing parts can be reused in turn and record the good or bad use conditions. It is also necessary to carefully investigate and record the removed bearings and appearance. In order to find out and investigate the residual amount of lubricant, the bearing should be well cleaned after sampling. Secondly, check the condition of the bearing raceway surface, rolling surface and mating surface, as well as the wear state of the cage for damage and abnormalities, especially observe the running track of the raceway surface.

To judge whether the bearing can be used again, we should decide after considering the degree of bearing damage, machine performance, importance, operating conditions, inspection cycle, etc. Inspection results: if the bearing is found to be damaged or abnormal, please find out the reason according to the phenomenon of bearing damage and formulate countermeasures. In addition, according to the inspection results, if there are the following defects, the bearing can no longer be used and needs to be replaced with a new bearing.

1. The raceway surface, retaining edge and rolling element are significantly jammed.

2. The cage is seriously worn or the rivets are severely loosened.

3. The raceway surface and rolling element are rusty and scarred.

4. There are significant indentations and scratches on the rolling surface and rolling element.

5. Any one of the inner and outer rings, rolling elements and cages has cracks and debris.

6. Any one of the inner and outer rings and rolling elements has peeling.

7. There is creep on the inner diameter surface of the inner ring or the outer diameter of the outer ring.

8. Overheating and severe discoloration.

9. The sealing ring and dust cover of the grease sealed bearing are seriously damaged.