Abnormal phenomena that may happen in the use of deep groove ball bearings

- Aug 03, 2020-


When inspecting the deep groove ball bearings that were disassembled during the regular maintenance, operation and replacement of peripheral parts of the bearing equipment, it is necessary to sequentially determine whether the secondary bearing parts can be used again and record the use of better than worse. Also carefully investigate and record the dismantled bearings and their appearance. In order to find out and investigate the remaining amount of lubricant, after sampling, clean the bearing well.

Secondly, check the raceway surface of the deep groove ball bearing, the condition of the rolling surface and the mating surface, and the wear state of the cage for damage and abnormal conditions, especially the running track of the raceway surface. To judge whether the bearing can be used again, it is necessary to consider the degree of bearing damage, machine performance, importance, operating conditions, inspection cycle, etc. before making a decision.

As a result of the inspection, if any damage or abnormality is found in the bearing, please find out the cause based on the damage to the bearing and formulate 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.

How to ensure the normal operation of deep groove ball bearings and how to make the bearings without damage to make the bearing life longer. Let me explain to you the precautions for ensuring the reliable operation of the bearing. I hope it will be helpful to you.

In general, there are several requirements for the reliable operation of bearings:

a. There are cracks and fragments in any of the inner and outer rings, rolling elements, and cages.

b. Any one of the inner and outer rings and rolling elements has peeled off.

c. The raceway surface, ribs, and rolling elements are significantly stuck.

d. The cage is severely worn or the rivets are loose.

e. The raceway surface and rolling elements are rusted and scratched.

f. There are significant indentations and marks on the rolling surface and rolling elements.

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

h. Discoloration is severe due to overheating.

i. The seal ring and dust cover of the grease-sealed bearing are seriously damaged.