Evaluation of Load-Life Relation With Ball Bearings at 500 Deg F

[+] Author and Article Information
R. J. Parker, E. V. Zaretsky

NASA-Lewis Research Center, Cleveland, Ohio

E. N. Bamberger

General Electric Co., Cincinnati, Ohio

J. of Lubrication Tech 96(3), 391-397 (Jul 01, 1974) (7 pages) doi:10.1115/1.3451972 History: Received June 06, 1973; Online October 18, 2010


A survey of the literature suggests that a stress-life exponent of approximately 12 is typical of vacuum-processed steels for ball bearings rather than the exponent of 9 which has been generally accepted by the bearing industry and bearing users. Tests run with vacuum-degassed AISI 52100 balls in the five-ball fatigue tester at four maximum Hertz stress levels in the range from 650000 to 875000 psi showed good agreement with the literature. However, tests run with consumable-electrode vacuum melted AISI M-50 steel angular-contact ball bearings at 500 deg F at three thrust loads did not show significant deviation from the accepted ninth power stress-life relation.

Copyright © 1974 by ASME
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