The Effects of Elastohydrodynamic Traction Behavior on Cage Slip in Roller Bearings

[+] Author and Article Information
R. A. J. Ford, C. A. Foord

Advanced Research Laboratory, Rolls-Royce (1971) Limited, Derby, England

J. of Lubrication Tech 96(3), 370-375 (Jul 01, 1974) (6 pages) doi:10.1115/1.3451966 History: Received July 06, 1973; Online October 18, 2010


A simple theoretical model of a bearing and measured traction curves are used to explain the different types of experimentally observed cage behavior which result from different lubricants. Traction curves with a pronounced peak are shown to produce unstable cage slip behavior, although bearings can operate steadily in the high slip region. The instability occurred in tests with a high traction fluid but not with ester-type gas turbine lubricants. A bench-top roller bearing rig of the type used in these experiments provides an effective method of assessing the tractive properties of lubricants, using a 25-ml sample.

Copyright © 1974 by ASME
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