Bearing clearance of select principles

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Clearance selection principle:
1, tight fit, a larger temperature difference between inside and outside the ring, you need to reduce the frictional torque, deep groove ball bearings to withstand greater axial load or the need to improve the performance of aligning occasions, should adopt clearance group.
2, when the high rotation accuracy requirements or the need to strictly limit the axial displacement, should adopt the small clearance group.bearing factory in china
Second, factors related to the clearance:
1, the bearing inner ring and shaft with.
2, the bearing outer ring with shell holes with.
3, the influence of temperature.
Note: the radial clearance reduce the amount of the actual mating parts effectively the size of the amount of interference, to match shaft diameter size, the wall thickness of the shell hole.
1, the actual amount of interference (inner ring) should be: â–³ dy = 2/3 â–³ d-G * â–³ d
The nominal amount of interference, G * for the interference fit flatten size.
2, the actual effective amount of interference (outer) should be as follows: â–³ Dy = 2/3 â–³ D-G * â–³ D as ceramic ball bearing
The nominal amount of interference, G * for the interference fit flatten size.
3, the heat generated will cause the temperature rise of the interior of the bearing, and then cause the expansion of the shaft, bearing and bearing parts. The clearance can be increased or decreased, depending on the material of the shaft and bearing, and a bearing and bearing support member temperature between tonsure.