Bearings show a strong regularity in their use and are very repeatable. Normal high-quality bearings (linear bearings) are relatively small in vibration and noise at the beginning of use, but the spectrum is somewhat wretched and the amplitude is small, probably due to some defects in the manufacturing process, such as surface burrs. After a period of movement, vibration and noise maintain a certain level, the spectrum is very single, only flooding one or two times the frequency. Rarely flooded with more than three times the frequency spectrum, the bearing state is very unstable, into the unstable work period. After the succession of operation into the use of late, bearing vibration and noise began to increase, and sometimes the sound, but the change of vibration increase more slowly, at this time, bearing crag value began to swiftly reach a certain value. We think, at this time, the bearing is the initial failure. In order to maintain the original function of the bearing in good condition for as long as possible, maintenance, inspection in order to prevent accidents before they happen, to ensure the reliability of operation, improve productivity, economy. Maintenance best corresponding to the scale of mechanical operating premise, on a regular basis. Contents include supervision of operating conditions, add or replace lubricants, disassembly inspection on a regular basis. As the operation of the inspection matters, there are bearing rotation sound, vibration, temperature, the state of lubricants, etc.. Bearing cleaning: When disassembling the bearings for inspection, we first record the appearance of the bearings, confirm the residual amount of lubricant, and wash the bearings after taking samples of the lubricant for inspection. As a cleaning agent, the general use of gasoline, kerosene. The cleaning of the dismantled bearing, divided into coarse cleaning and fine cleaning, respectively, placed in the container, first put on the metal net pad bottom, so that the bearing does not directly contact the container of dirt. Rough cleaning, if the bearing with dirt rotation, will damage the bearing of the dynamic surface, should be noted. In the rough cleaning oil, use the brush to remove the grease, adhesion, roughly clean, and then move to the fine cleaning. Fine cleaning is to rotate the bearing in the cleaning oil while carefully cleaning. In addition, the cleaning oil should be kept clean often.  

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