The coordination of high-speed bearing

high-speed bearings with clearance due to the requirements of the high speed for both high precision bearings  and  high temperature bearing, so in consideration of its coordination and clearance, to take into account the following two points:

(1) changes in the size and hardness changes when the temperature rose from     ambient temperature;
(2) force line change and shape change under high-speed centrifugal force caused by.

In short, in the high precision ball bearings and high temperature conditions, and with clearance from the selection of want to keep a bearing on the accuracy and performance, this is difficult.

In order to ensure the bearing after installation of the rolling deformation is small, the amount of interference can not KOYO 7319AC angular contact ball bearing interference fit get too large, and high speed centrifugal force and high temperature thermal expansion, or set off with the normal surface pressure.

Or relax the mating surface , so the amount of interference must considering the above two kind of factors under the carefully calculated, the effective amount of interference may be invalid for the high-speed bearing in the normal speed.