The Influence of Heat Generation In the Contact Zone on Bearing Fatigue Behavior

[+] Author and Article Information
H.-Jürgen Böhmer, Thomas Lösche

FAG OEM & Handel AG, D-97419 Schweinfurt, Germany

Franz-Josef Ebert, Edgar Streit

FAG Aircraft/Super Precision Bearings GmbH, D-97419 Schweinfurt, Germany

J. Tribol 121(3), 462-467 (Jul 01, 1999) (6 pages) doi:10.1115/1.2834090 History: Received February 02, 1998; Revised July 06, 1998; Online January 24, 2008


The material behavior of the standard bearing steel SAE 52100 and the heat resistant bearing steels M50, M50 NiL, and Cronidur 30 as a function of the operational temperature has been investigated. The reduction in rolling contact fatigue strength due to a temperature rise was found to be significantly higher than the reduction of hardness. The mechanism of heat generation due to the bearing operation induces a temperature distribution, which makes it necessary to distinguish between the temperature ruling the subsurface fatigue processes and a higher temperature dominating the surface originated damage initiation.

Copyright © 1999 by Journal of Tribology
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