The fit and clearance of the idler bearing Since the idler bearing must be in accordance with the requirements of high-precision bearings and high-temperature bearings, when considering its fit and clearance, the following two points must be considered: (1) From normal temperature to Dimensional change and hardness change at high temperature; (2) Force system change and shape change caused by centrifugal force at high speed. In short, under the conditions of high speed and high temperature, it is difficult to maintain the accuracy and working performance of the bearing from the choice of fit and clearance. In order to ensure that the deformation of the raceway after the bearing is installed is small, the interference of the interference fit cannot be made too large, and the centrifugal force at high speed and the thermal expansion at high temperature can offset the normal pressure of the mating surface. Or to loosen the mating surface, the interference must be carefully calculated in consideration of the above two factors. The effective interference at normal temperature and speed may be invalid for the roller bearing. Thermal expansion at high temperatures may offset the normal pressure on the mating surface. Or to loosen the mating surface, the interference must be carefully calculated in consideration of the above two factors. The effective interference at normal temperature and speed may be invalid for the roller bearing. China Ball Bearing manufacturers website:http://www.ghballbearings.com/ball-bearing/
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