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When inspecting the disassembled imported bearings during regular maintenance, operation, and replacement of peripheral parts of the imported bearing equipment, it is necessary to sequentially determine whether the imported bearing parts of the secondary chamber design can be reused and record the good or bad usage. It is also necessary to carefully investigate and record the dismantled imported bearings and their appearance. In order to clarify and investigate the remaining amount of lubricant, after sampling, it is necessary to clean the imported bearings well.

Next, check the condition of the raceway surface, rolling surface, and mating surface of the imported bearing, as well as the wear status of the cage, for any damage or abnormalities, especially observing the running trajectory of the raceway surface. To determine whether a bearing can be reused, it is necessary to consider the degree of bearing damage, machine performance, importance, operating conditions, inspection cycles, and other factors before making a decision.

If damage or abnormal conditions are found in the imported bearings of the sealed room design, please identify the cause according to the phenomenon of bearing damage and develop countermeasures. In addition, according to the inspection results, if there are any of the following defects, the imported bearings in the chamber design cannot be used anymore and need to be replaced with new bearings.

a. Any one of the inner and outer rings, rolling elements, and retaining frames has cracks or fragments.

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

c. The rolling surface, blocking edge, and rolling element have significant jamming damage.

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

e. Rust and scratches on the raceway surface and rolling elements.

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

g. There is creep on the inner diameter surface of the inner ring or the outer diameter of the outer ring.

h. Overheating causes severe discoloration.

i. The sealing ring and dust cover of the grease sealed bearing are severely damaged.

Room design image: