Installation and adjustment with high speed bearings

When the co-ordination and high speed bearings clearance due to the rapid bearing both high precision bearings according to requirements, but also according to the requirements of high temperature bearings, so consider the mating and clearance, to take into account the following points:
(1) changes in the size and hardness changes in temperature rose at a high temperature;
(2) High speed centrifugal force caused by the force system changes and shape changes.
In short, at high speed, high temperature conditions, with and clearance from the choice you want to strive to maintain the accuracy and performance of the bearing, which is difficult. In order to ensure the installation of the rear bearing raceway deformation is small, angular contact ball bearing interference fit the amount of interference can not achieve much, but heat and centrifugal force at high speed under high temperature expansion, surface or offset with normal pressure. Or the mating surface relaxation, and therefore the amount of
interference must be carefully applied in consideration of the above two factors premise In computing, at normal temperature and normal speed under effective amount of interference for high-speed bearings may be invalid.

Miniature bearings

Miniature bearing refers to  all kinds of bearings,whose outside diameter less than 9mm of  metric series and outside diameter less than 9.525mm of inch series. The main materials are steel, bearing steel, stainless steel, plastic, ceramic, wherein the inner diameter of the smallest can do 0.6mm, with more 1mm inner diameter.

  In the miniature bearing of ultra small aperture, types of miniature deep groove ball bearings are metric 68 series, 69 series, 60 series, a total of 6 inch R series.On this basis,angular contact ball bearing also can be divided into with ZZ steel dust cover bearing series, with RS rubber sealing ring for miniature bearing series, teflon bearing seal ring series and with flange rib series and so on.