In order to solve skidding problem of aero-engine mainshaft cylindrical roller bearing

a cylindrical roller bearing with beveled cage pocket was proposed

and its high-speed skidding suppression characteristics was researched. By use of the Hertz contact theory

elastohydrodynamic lubrication and hydrodynamic lubrication formulas

contact model between roller and inner/outer ring races

contact model between cage pocket and roller

and contact model between cage and guiding surface of outer ring were built

and based on multibody kinematics and the Newton-Euler dynamics theory

three degree of freedom bearing dynamics model in the bearing radial plane was built. On this basis

using the Runge-Kutta numerical integration method

bearing dynamics numerical simulations were carried out

influence laws on bearing skidding by inclination angles of the front and rear walls of cage pocket were discussed

and bearing high-speed skidding characteristics was analyzed in case of inclination angle of the front wall of cage pocket was equal to 5° and inclination angle of the rear wall was equal to 10°

and the simulation results show: influence on bearing high-speed skidding by inclination angles of the front and rear walls of cage pocket is remarkable

and by optimizing this two inclination angles

bearing high-speed skidding can be effectively controlled.