In order to ensure the bearing after installation without excessive deformation, must be

In order to ensure the bearing after installation without excessive deformation, must be:
(1) The roundness of the shaft and housing bore and the shoulder block verticality precision bearing in accordance to the respective requirements.
(2) it is necessary to accurately calculate the amount of interference with the rotating rings, but also accurately calculate the appropriate amount of fixed ferrule.
Rotatable collar burning interference to the extent possible should also get smaller. As long as the effects of thermal expansion and ensure the operating temperature, and maximum speed under the influence of centrifugal force, so as not to cause a tight fit creeping or sliding surfaces. The fixed ring according to the work load size and bearing size, choose small clearance fit or interference fit, too loose or too tight is not conducive to maintaining the original precise shape.
(3) bearing as running at high speed, and high operating temperatures, special attention should be rotating rings can not be too loose, in order to prevent the emergence with eccentric, and a gap can not be fixed ferrule to prevent ferrule deform under load and vibration excitation.
(4) Effect of fixed ring take a small interference fit with the proviso that both sides have a high mating surface shape accuracy and less roughness, or cause installation difficulties disassembly harder, in addition, also we need to consider the thermal elongation of the spindle .
(5) pairs of double angular contact ball bearing spindle, most of the load is light, the blending amount of interference, such as too large, then its internal axial preload amount will be significantly larger, resulting in adverse effects. Use double row cylindrical roller bearings and tapered roller bearings Spindle spindle, its load is relatively large, so its interference with relatively large.