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Institutional operation, installation of bearings parts to allow a certain temperature, when the hand touch body shell, should not feel hot to normal, whereas that of non-standard bearings temperature.
The reason of high temperature of bearings: lubricating oil quality does not meet the requirements or deterioration, the oil viscosity is too high; mechanism assembly tight (spaces); preloaded EDA bearingss; bearings race rotation on the shaft or shell; overload; bearings retainer or rolling body fragmentation.
EDA bearings is allowed in the work of the minor operation noise, if the sound is too loud or unusual noise or impact sound, it indicates that the bearings failure.
Causes noise rolling bearingss are more complex, one is the bearings outer ring, the surface wear. Because of this wear, destroyed the fit between bearings and housing, bearings and shaft, causes the axis deviates from the correct location, the axis in high-speed motion noise. When the bearings fatigue, its surface metal flake, also bearings radial clearance increases the noise. In addition, non-standard bearingss, lack of lubrication, the formation of dry friction, as well as bearings broken produces abnormal sound. After bearings wear loose, loose cage damage, would also have abnormal noise.
1, bearings maintenance: for long time to maintain the performance of bearings was in good condition as far as possible, maintenance, repair, in order to prevent accidents, ensuring the reliability of operation, increase production, economy.
To maintain the best operating conditions of the corresponding mechanical operating standards, regular. The content includes monitoring running state, supplement or replacement of the lubricant, periodic disassembly inspection. Maintenance of operational matters, rotating tones, non-standard bearings vibration, temperature, lubricant condition and so on.

Maintenance 2: bearings, bearings cleaning: remove bearings overhaul, the first recorded appearance of EDA bearingss, confirm the remaining amount of lubricant, after sampling inspection by the lubricant, cleaning bearingss. As a cleaning agent, general use gasoline, kerosene.
Removed bearings cleaning, cleaning rough and fine cleaning, placed in a container, metal mesh on the bottom first, make the bearings does not directly contact the container dirt. Rough cleaning, if you rotate the bearingss with dirt, can damage the bearingss of rolling surface, should pay attention to. In the crude oil washing, use the brush to remove grease, adhesive material, generally after a clean, to wash.
Sperm washing, cleaning of oil bearings is in while rotating, while careful cleaning. In addition, cleaning oil should be kept clean.
3, bearings maintenance and judgment: dismantled in order to determine the bearings can be used to check whether, after bearings wash. Check the raceway surface, rolling surface, with the surface state, cage wear, non - standard bearings clearance and an increase in the size accuracy decreased injury, abnormal. Non separation of small ball bearingss, inner ring with one hand supporting level, to confirm whether the smooth rotating ring.