The Effects of Young’s Modulus of Materials on the Rolling Resistance Characteristics of Ball Bearing

Abstract

The effects of Young’s modulus of materials on the rolling resistance characteristics of ball bearing have been investigated by experimental,analytical and numerical method. Results show that the Young’s modulus of ball bearing greatly affects its rolling resistance characteristics and the characteristic values of the rolling resistance characteristics will decrease with the increase of the Young’s modulus of ball bearing, for example, the elastic power consumption of the ZrO2 bearing is about 80 percent of the GCr15 bearing, and that the effects mainly reflects on three aspects: the elastic hysteresis of the material, the contact stress and deformation in the contact region.Results are helpful to the design of materials compatibility of ball bearing.