Modeling the frictional torque of a dry-lubricated tapered roller bearing considering the roller skewing  

作　　者：Chi ZHANG Le GU Yuze MAO Liqin WANG 

机构地区：[1]Research Lab of Space & Aerospace Tribology, Harbin Institute of Technology

出　　处：《Friction》2019年第6期551-563,共13页摩擦（英文版）

基　　金：support of the National Natural Science Foundation of China (Nos. 51675120 and U1637206)

摘　　要：In this paper, an equation for the calculation of the frictional torque of a dry-lubricated tapered roller bearing(TRB) is provided in which the effect of the roller skewing is emphasized. Calculations were performed to investigate the effect of the roller skewing on the torque of dry-lubricated TRB for two representative preload methods, that is, axial force preload and axial displacement preload. The results show that a proper roller skewing angle under axial force preload benefits the reduction of the TRB torque. However, the roller skewing angle should not exceed a certain critical value;otherwise, it will cause a steep rise in the TRB torque. Finally, the critical value of the roller skewing angle as a function of the friction coefficient and cage pocket clearance is presented. The developed torque model provides a tool for the internal design and torque optimization of dry-lubricated TRBs.In this paper, an equation for the calculation of the frictional torque of a dry-lubricated tapered roller bearing(TRB) is provided in which the effect of the roller skewing is emphasized. Calculations were performed to investigate the effect of the roller skewing on the torque of dry-lubricated TRB for two representative preload methods, that is, axial force preload and axial displacement preload. The results show that a proper roller skewing angle under axial force preload benefits the reduction of the TRB torque. However, the roller skewing angle should not exceed a certain critical value; otherwise, it will cause a steep rise in the TRB torque. Finally, the critical value of the roller skewing angle as a function of the friction coefficient and cage pocket clearance is presented. The developed torque model provides a tool for the internal design and torque optimization of dry-lubricated TRBs.

关 键 词：tapered roller bearing frictional torque roller skewing dry lubrication 

分 类 号：TH133.3[机械工程—机械制造及自动化]