in order to give full play to the bearing and maintain its due performance for a long time, it is necessary to do a good job in "Star Materials of the 21st century" such as regular maintenance (regular inspection). Through proper regular inspection, it is very important to find faults early and prevent accidents before they happen, so as to improve productivity and economy
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. bearing cleaning is divided into rough cleaning and fine cleaning, and a metal frame can be placed at the bottom of the container used
b. During rough cleaning, remove grease or adhesion with a brush in the oil. At this time, if the bearing is rotated in oil, be careful that the rolling surface will be damaged by foreign matters
c. During fine cleaning, rotate the bearing slowly in oil and carefully
the commonly used cleaning agent is neutral water-free diesel oil or kerosene, and warm lye is sometimes used as needed. No matter what kind of detergent you use, you should always filter it to keep it clean
after cleaning, coat the bearing with antirust oil or grease immediately
2. Inspection and judgment
in order to judge whether the removed bearing can be reused, it is necessary to focus on the inspection of its dimensional accuracy, rotation accuracy, internal clearance, mating surface, raceway surface, holder and sealing ring that can greatly reduce the cost of 3D printing
the inspection results can be judged by those who are used to bearings or proficient in bearings
the judgment standard varies according to the mechanical performance, importance and inspection cycle. If there are the following damages, the bearing must not be reused and must be replaced.
in the next 5-10 years 1) fracture and defects of bearing parts.
2) peeling of the rolling surface of the raceway surface