What should be paid attention to when using FAG bearings

wallpapers Resource 2020-06-12
1. Selection and control of tolerances for shafts and bearing houses
The FAG bearing should rotate flexibly without blocking feeling after being pressed into the bearing. If there is obvious rotation inflexibility, it indicates that the size of the shaft is too large, and the tolerance should be reduced. If there is a significant "rustling" feeling in hand rotation after FAG bearing is pressed into the shaft, it may be because the tolerance of the shaft is too large or the roundness of the shaft is not good, Renault pad. Therefore, roundness should also be controlled well when controlling tolerance of shaft and bearing chamber. At present, many domestic manufacturers only control tolerance and do not control roundness.

2. Assembly method of FAG bearings
Because FAG bearing is a high-precision product, improper assembly will easily cause damage to the groove of FAG bearing, leading to damage of FAG bearing. FAG bearing assembly should be special mold, can not be knocked at will, when the shaft can only be pressed into the small circle of stress, pressure on the large circle of stress. It is required to use air pressure or hydraulic pressure during assembly, and the upper and lower dies should be in horizontal state. If there is tilt, FAG bearing channel will be damaged due to stress, and FAG bearing will produce leading sound.

3. Prevention of foreign body assembly
When the FAG bearing is installed on the rotor for dynamic balance, it is easy to enter the iron filings generated during dynamic balance into the FAG bearing. Therefore, it is better to do dynamic balance before installing the FAG bearing. In order to facilitate assembly, some manufacturers paint some oil or grease in the bearing room during assembly for lubrication effect, but it is often difficult for operators to control the amount well. If more oil or grease is accumulated in the FAG bearing room, it is easy to enter the FAG bearing along the shaft when the BEARING rotates. FAG bearing room in Japan is best not to oil or grease, if it is not to be coated must be controlled not to accumulate in the bearing room.

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FAG bearings classification