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RESEARCH PAPERS

Rolling Bearing Life Modifying Factors for Film Thickness, Surface Roughness, and Friction

[+] Author and Article Information
T. E. Tallian

SKF Technology Services, SKF Industries, Inc., King of Prussia, PA 19406

J. of Lubrication Tech 103(4), 509-516 (Oct 01, 1981) (8 pages) doi:10.1115/1.3251724 History: Received February 15, 1980; Online November 17, 2009

Abstract

This paper facilitates practical calculation of rolling contact fatigue life, allowing for material, lubrication, and surface topography effects. Modifying factors for the predicted fatigue life are given for: material matrix strength; material defect severity; EHD film thickness/surface roughness ratio Λ; surface asperity slope σθ and boundary lubricated traction coefficient μa . Readily evaluated formulas are provided for the above factors. Calculated results show predicted life versus Λ with σθ and μa as parameters. Comparison with experimental data shows that the model covers most documented test results of life versus Λ. Scanty experimental data covering σθ and traction effects on life are compatible with the model predictions.

Copyright © 1981 by ASME
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