FAG bearings into full play and to maintain its long-term performance, must be doing a periodic maintenance (periodic inspection).
　　Through appropriate checks on a regular basis, so that early detection of failures, prevent accidents in the future, to increase productivity and economic importance.
　　1, cleaning
　　FAG bearings remove the checks, using methods such as photographic appearance record. In addition, sampling to confirm the amount of remaining lubricants and lubricants and cleaning bearings.
　　A, bearing wash wash the cleaning of rough and refined, and can use the metal rack on the bottom of the container.
　　When b, heavy wash, clear, such as in oil with a brush grease or adhesive material. When rotating bearings in oil, attention due to foreign body injuries, such as scrolling.
　　C/finish when washing, slowly rotating bearings in oil, be careful.
　　Commonly used cleaning agent as neutral does not contain water-diesel or kerosene, Lye temperature are sometimes used as needed. Regardless of what kind of cleaning agents, are often filtered clean.
　　After washing, immediately coating antirust oil or antirust grease in the bearing.
　　2, check with the judge
　　To determine the bearing can be removed again, to focus on checking its accuracy, rotating accuracy, internal clearance, and the mating surfaces, roller cage and seals.
　　On the inspection results are judged by the used or well versed in bearings.
　　Criteria based on the mechanical properties and importance vary depending on the level and check the cycle. As the injury, FAG bearings shall not be reused and must be replaced.
　　1) faults and defects of bearing components.
　　2) split of Raceway surface scroll surface.
　3, bearing fault identification method
　　Not by removing inspection can identify or predict bearing in a trouble-free operation, to improve productivity and economy are very important.
　　Major recognition methods are as follows:
　　1) by voice recognition
　　Voice recognition requires a wealth of experience. Must be fully trained voices able to identify bearing and non-bearing sound. This should be done by hand as far as possible to make this work. Listening to audio or sound bar attached to the shell can be clearly heard on the bearing of the sound.
　　2) through to identify operating temperature
　　The method is a method to identify, is limited to use in running conditions don′t change. To this end, the need for continuous recording of the temperature. Fails, not only temperature, irregular changes also occur.
　　3) through State recognition of lubricants
Sampling analysis of lubricants, mixed with foreign objects through the degree of dirt or metal powder for judgment. The method near the observation or large bearings are particularly effective.