How to judge whether a bearing can be used again
Author: hongyuanTime:
During regular maintenance, operation inspection and replacement of peripheral parts of the equipment, to determine whether the disassembled bearing can be used again, be sure to carefully investigate and record the disassembled bearing and its appearance. In order to clarify and investigate the remaining amount of lubricant, take samples In the future, the bearings should be cleaned better.
First check the condition of the raceway surface, rolling surface and mating surface, as well as the wear status of the cage for damage and abnormalities. Furthermore, after considering the degree of bearing damage, machine performance, importance, operating conditions, inspection intervals, etc., decide whether the bearing can be reused or replaced. If damage or abnormality is found in the bearing, identify the cause and formulate countermeasures.
If there are any of the following defects, the bearing can no longer be used and needs to be replaced with a new one.
01
There are cracks and fragments in any of the inner and outer rings, rolling elements, and cages.
02
Any of the inner and outer rings and rolling elements are peeled off.
03
The raceway surface, ribs and rolling elements are obviously jammed.
04
The cage is severely worn or the rivets are loose.
05
The raceway surface and rolling elements are rusty and have obvious indentations and scratches.
06
There is creep on the inner diameter surface of the inner ring or the outer diameter of the outer ring.
07
Severe discoloration due to overheating.
08
The sealing ring and dust cover of the grease-sealed bearing are seriously damaged.
Take precautions before they happen
The above is a brief introduction on how to judge whether the bearing can be used again. I hope it can help everyone. In order for the bearing to fully exert its performance and maintain its due performance for a long time, regular maintenance (regular inspection) must be carried out to prevent accidents. In the future.
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