Ceramic material has a low density, anti-fatigue and anti-wear, excellent performance, strong anti-lubricant contamination, thermal expansion coefficient, hardness advantages, and 9Cr18 stainless steel have excellent and stable friction performance, even under conditions of dry friction coefficient of friction can be stable at 0.2 or less.

Consider the material characteristics and working conditions, Changzhou pumps use bearing static analysis methods proposed for ceramic bearings and steel bearings numerical analysis. At different azimuths of the rolling elements and the inner and outer rings have varying contact angle between the difference between the contact angle is smaller, the rolling elements and keep the impact clover Roots vacuum between the frame smaller bearings the more stable operation, the contact angle of ceramic bearings with rolling elements azimuth change is small, and therefore more suitable for high speed working conditions.

The main factors affecting the bearing fatigue life have high-speed anti-fatigue properties of the material and the contact load.

Ceramic material itself has excellent resistance to fatigue failure capacity is more than 35 times the fatigue life of bearing steel; high-speed centrifugal load bearing contact stress leads between the rolling elements and rings with the speed of the increase to a sharp increase in the secondary side, thereby shorten bearing fatigue life, additional centrifugal load of ceramic bearings is much smaller than the centrifugal load bearing steel.

Despite the high elastic modulus of ceramics under the same exposure conditions, contact stress than the steel bearing large, but for missile engine speed high-temperature ceramic bearings, which increases the value smaller than the centrifugal force reduced portion, therefore, the fatigue life of ceramic bearings there is still a substantial increase.