In order to guarantee bearing after installation does not produce in excessive deformation, you must do the following :

1, when installation with a hole shaft roundness and block shoulder vertical degree according to the corresponding precision requirements to bearing;

2, not only to be precise calculation rotation of the rings with surplus quantity, and precise rings with the appropriate amount fixed;

Rotating contractor over surplus quantity of burning in possible range has also advised small. As long as really ensure the operating temperature influence of thermal expansion, and under the influence of the highest speed centrifugal force, won't cause a tight fit the motion of the surface or sliding. Fixed according to the work load size and contractor selection of tiny size bearing clearance fit or interference with, because too loose or too tight, has not kept the original accurate shape.

3, bearing on the conditions to turn, the working temperature is higher, should pay special attention to rotate the collar with not too loose, in order to prevent the eccentric vibration, and fixed the collar with do not appear clearance, in order to prevent the front-runners in load stimulate and deformation vibration.

4, on the fixed circle take minor offences surplus with condition is suitable surface, both sides are high precision and the roughness of the smaller shape, cause otherwise in installation and remove more difficult, in addition, also need to consider the influence of the main shaft hot elongation.

5, to use double in pairs Angle contact ball bearing spindle. Because it mostly load is lighter, with its over surplus quantity such as too large, the internal axial preloaded volume will significantly too large, can cause adverse impact. Use double row short cylindrical roller bearing spindle and tapered roller bearing spindle, the load is opposite bigger, so its interference with the relatively large also.

 
In the installation of bearings with only to the above five to ensure bearing after installation won't produce big deformation.



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