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How to judge whether the bearing can be used again?

Jime

To judge whether bearings can be used again, it is necessary to consider the degree of bearing damage, machine performance, importance, operating conditions, inspection cycle and so on.

 

Check the bearings removed from the equipment during regular maintenance, operation inspection and replacement of peripheral parts, so as to judge whether they can be used again or whether the user is better than bad.

 

First of all, carefully investigate and record the removed bearing and appearance, in order to find out and investigate the remaining amount of lubricant, after sampling, to clean the bearing well.

 

Secondly, check the raceway surface, rolling surface and mating surface as well as the wear state of the cage for damage and abnormal conditions.

 

To judge whether bearings can be used again, it is necessary to consider the degree of bearing damage, machine performance, importance, operating conditions, inspection cycle and so on.

 

Check the results, if the bearing is found to have damage and abnormal conditions, the content of the injury section is to find out the cause and develop countermeasures. In addition, the inspection result shows that if there are the following defects, the bearing can no longer be used and a new bearing needs to be replaced.

 

A. Any one of the inner and outer rings, rolling bodies and cages has cracks and fragments.

 

B. Any of the inner and outer rings and rolling bodies are stripped.

 

C. There are significant stuck injuries on the raceway surface, guard edge and rolling body.

 

D. Serious wear and tear of the cage or severe loosening of the rivet.

 

E. Rusted and scarred raceway surface and rolling body.

 

F. There are significant indentations and striking marks on the rolling surface and rolling body.

 

G. Creep on the inner diameter surface of the inner ring or the outer diameter of the outer ring.

 

H. Excessively hot and discoloured.

 

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

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