Bearing ring is a very precise part. In the process of storage and use, we should pay attention to some matters to avoid major accidents caused by bearing damage, so the cleaning and maintenance of bearing ring is very important.
1, clean
When the imported bearing is removed for inspection, the appearance record shall be made first by photography and other methods. In addition, confirm the amount of residual lubricant and sample the lubricant before cleaning the bearing.
a. Bearing cleaning is divided into rough cleaning and fine cleaning, and a metal grid can be placed at the bottom of the used container.
b. In case of rough cleaning, the grease or adhesive shall be removed with a brush in the oil. At this time, if the bearing is rotated in the oil, pay attention to damage the rolling surface due to foreign matters.
c. When cleaning, rotate the bearing slowly in the oil and proceed carefully. Generally, the detergent used is neutral diesel oil or kerosene without water, and warm alkaline solution is sometimes used as required. No matter what kind of detergent is used, always filter and keep clean. Apply anti rust oil or grease on the bearing immediately after cleaning.
2. Inspection and judgment
In order to judge whether the removed bearing can be reused, the 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 inertia bearing or are proficient in bearing.
The criteria of judgment vary according to the mechanical properties and importance, as well as the inspection period, etc. In case of the following damage, the bearing shall not be reused and must be replaced.