How to Inspect Rolling Bearing from Outward Appearance

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      Inspection of rolling bearings generally do not disassemble, should be cleaned clean, through the appearance inspection, idle test and if necessary, the internal clearance measurement, can judge whether its quality is good. When inspecting the bearings, the bearings should be carefully observed from left to right. It is found that the following conditions should be replaced or repaired:

The original gloss of balls, rollers and outer raceways is changed by ablation. Scratches, marks, scratches and abnormal wear are found on the inner and outer raceways of bearings.

There are cracks, metal delamination, scaly peeling and a lot of black spots on the inner and outer raceways, balls and balls of bearings; there are penetrating cracks on the isolation ring and rivets are lack or loosened; the groove of the isolation ring ball (roller) is worn too much and the balls (roller) can fall out by themselves;

滚珠轴承隔离环圈端面的磨损超过0.30毫米深度；锥形滚珠磨损，其小端的


The wear of the end face of isolation ring of ball bearing exceeds 0.30 mm depth; tapered ball wear, the working face of its small end protrudes out of the end face of bearing outer seat ring; there are gaps and metal peeling on the inner end face of large end of inner ring of roller bearing.


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