Abstract: The lubrication film thickness,hydrodynamic contact pressure and tractive foree at the race contacts of the high-speed roller bearing are calculated directly by using elastohydrodynamic lubrication(EHL)analytical method.A roller bearing mathematical model is developed and employed to study the kinematical and dynamical properties of high-speed roL-ler bearing for a given bearing geometry and operating condition.The influences of some oper-ating conditions such as working load, rotating speed and number of rollers on the roller contact bearing skidding are taken into consideration.The analytical results presented here coincide quite well with the experimental results in a wide range of working conditions.

Key words: bearings, elastohydrodynamics, lubrication, skidding