Friction moment character and its test study of hub bearing

WANG Jian-hua, HUANG De-jie
(ZheJiang Wan Xiang Precision Industry Co., Ltd., Hangzhou 311202, China)

Abstract: Aiming at the energy consumption problem for friction of hub bearing, friction moment influence factors of hub bearing were analyzed. The influence of factors such as raceway preload, seal interference, seal grease and seal contact surface roughness on friction torque was studied. Through the collection and analysis of load spectrum of life check and durability test of hub bearing, a more scientific friction moment test method was given out. Base on the test method, raceway preload, seal interference, seal grease, seal contact surface roughness and other factors friction test were carried out. The results indicate that outside seal lip interference has no significant influence on friction moment, but the lower viscosity grease is used in the sealing place to reduce the friction torque by 14%. At the same time, the roughness of sealing contact surface is under Ra 0.4, it has also a good effect on reducing friction torque. The results have certion guiding significance for the development of low friction hub bearing.
Key words: hub bearing; friction moment; preload; seal