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First of all, check the lubricating grease whether there is deterioration, caking, impurities and other undesirable situation, which is the reason for the determination of the bearing damage important basis.
Second, check the bearing for any bite and wear; Check the surface finish of the bearing inner and outer ring, rolling body, Cage, and have no cracks, rust, peeling, pits, overheating discoloration
and other defects, to measure the bearing clearance is exceeded, check the bushing wear, pit point, peeling, if the above situation should replace the new bearing.
Bearing in the installation of the bearing diameter and shaft, outer diameter and the housing of the coordination is very important, when the coordination is too loose, the mating surface will produce a relative slip called creep.
Once the creep occurs, the mating surface is damaged, the shaft or casing is broken, and the abrasive powder invades the inside of the bearing, causing heat, vibration and damage.
When the interference is too large, it will cause the outer ring diameter to be smaller or the inner circle diameter become larger, reducing the bearing internal clearance.
In order to select suitable bearings, the characteristics, size, temperature conditions of the bearing load and the rotation of the outer ring of the inner ring are considered.