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How to determine whether the bearing can be reused？

2022-06-13

During regular maintenance of equipment, operation inspection, and replacement of peripheral parts, judge whether the disassembled bearing can be reused is very important. We should carefully investigate and record the appearance of the bearing. In order to find out and investigate the residual amount of lubricant, clean the bearings carefully.

To make sure whether the disassembled bearing can be used again, first, check the status of the raceway surface, rolling surface, and mating surface, as well as the wear status of the cage to see if any damage and abnormal conditions.

Second, consider the degree of bearing damage, machine performance, operating conditions, inspection period before deciding whether the bearing can be reused or replaced.

If there are any of the following defects, the bearing can no longer be used and a new one is needed.

1) Any of the inner and outer rings, rolling bodies, and cages with cracks or fragments.

2) Any one of the inner and outer rings and rolling body is stripped.

3) The raceway surface, side block, and rolling body are obviously jammed.

4) The cage is badly worn or the rivets are loose.

5) The raceway surface and rolling body are rusted or scarred.

6) There are significant indentations and scratches on the rolling surface and rolling body.

7) The inner diameter surface of the inner ring or the outer ring has crept on its outer diameter.

8) It changes color badly in overheating.