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RESEARCH PAPERS

A New Rolling Contact Surface and “No Run-In” Performance Bearings

[+] Author and Article Information
Rao S. Zhou, Fukuo Hashimoto

The Timken Company, Canton, OH 44706-0930

J. Tribol 117(1), 166-170 (Jan 01, 1995) (5 pages) doi:10.1115/1.2830594 History: Received February 24, 1994; Revised July 08, 1994; Online January 24, 2008

Abstract

Plasticity indexes are usually used to describe the elastic-plastic deformation properties of a rough surface. The contact surfaces of any new rolling element bearing always change during the bearing run-in period until arriving upon a relatively stable surface texture. In this paper, a new random isotropic surface with very low plasticity index is proposed and created for the surfaces of rolling elements bearings. From both the calculated surface parameters and the run-in torque test results, the special rolling contact surfaces demonstrated “No Run-In” characteristics. Lower running torque is obtained from bearing tests and longer fatigue life is also expected by the subsurface stress analysis.

Copyright © 1995 by The American Society of Mechanical Engineers
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