Friction and Wear Analysis of Grease-Lubricated Ball Bearing Based on EHL Numerical Calculation

Abstract:

Through the numerical calculation on elasto-hydrodynamic lubrication of grease lubricated ball bearing it’s obtained that: for the outer ring fixed, inner ring rotating with the shaft ball bearing type, as a result of the relative speed of steel ball-inner ring friction pairs is faster than the steel ball-outer ring, the film pressure peak and average film pressure on steel ball-inner ring friction pairs is greater than those of steel ball-outer ring, therefore, inner ring surface compared with outer ring is more likely to appearance wear and fatigue failure; In the process of steel ball rotation, there’s a rotation torque which caused by the asymmetry distribution of film pressure generated, and this rotation torque accelerates the rotation speed of steel ball.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 919-924
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.919
• Online since: February 2012
• Authors: Chao Lin Peng, Xiao Peng Xie, Shu Lin Chen
• Keywords: EHL, Grease-Lubricated, Multi-Grid Method, Rotation Torque

References

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