Judge whether the removed bearing can be reused

In order to judge whether the removed bearing can be reused, its dimensional accuracy, rotation accuracy, internal clearance, mating surface, raceway surface, cage and sealing ring shall be emphatically checked.
The inspection results can be judged by those who use inertial bearings or are proficient in bearings.
The judgment criteria vary according to mechanical properties, importance and inspection cycle. In case of the following damage, the bearing shall not be reused and must be replaced.
1) Fracture and defect of bearing parts.
2) Stripping of the rolling surface of the raceway surface.
In order to give full play to the bearing and maintain its due performance for a long time, regular maintenance (regular inspection) must be done.
Through proper regular inspection, it is very important to find faults early and prevent accidents before they happen, which is very important to improve productivity and economy.
1. Cleaning: when removing the bearing for inspection, first make appearance records by photography and other methods. In addition, confirm the amount of remaining lubricant and sample the lubricant before cleaning the bearing.
a. The cleaning of bearings is divided into rough cleaning and fine cleaning, and a metal grid can be placed at the bottom of the container.
b. During rough cleaning, remove grease or adhesion with a brush in the oil. At this time, if the bearing is rotated in oil, pay attention to the damage to the rolling surface due to foreign matters.
c. During fine cleaning, rotate the bearing slowly in oil and carry out it carefully.
The cleaning agent usually used is neutral water-free diesel oil or kerosene, and warm alkali liquor is sometimes used as required. No matter what kind of cleaning agent you use, always filter it and keep it clean.
After cleaning, apply antirust oil or antirust grease on the bearing immediately.