To be considered in the installation of high-speed bearings to 2:00: hardness changes caused by the rise in temperature; force system changes caused by the centrifugal force of the high-speed rotation and shape change!

In order to ensure the bearing after installation of the raceway small deformation, the amount of interference of the interference fit can not be made ??too large, and under high speed centrifugal force and under the high temperature thermal expansion, or the offset of the method to the pressure of the mating surfaces. Or the mating surface relaxation, and therefore the amount of interference must be calculated carefully considered the above two factors, the effective amount of interference for high-speed bearings may be ineffective in normal temperature and velocity.

If the calculation results of this contradiction is too large (usually only in the ultra-high speed makes this case), only to take the ring under lubrication method and hydrostatic lubrication with double lubrication, and this program has the potential to bearing dmn value breakthrough 3 million mark.

The high temperature thermal expansion, or the offset of the method to the pressure of the mating surfaces. Or the mating surface relaxation, and therefore the amount of interference must be calculated carefully considered the above two factors, the effective amount of interference for high-speed bearings may be ineffective in normal temperature and velocity.