The Effect of Solid Film Lubricants on the Stability of Rolling Element Bearings

[+] Author and Article Information
J. W. Kannel, T. L. Merriman

Battelle Columbus Division, Columbus, Ohio

J. Tribol 109(2), 351-355 (Apr 01, 1987) (5 pages) doi:10.1115/1.3261365 History: Received April 15, 1986; Online October 29, 2009


A technique has been developed for modeling solid films in rolling element bearings. For a given bearing geometry an effective viscosity can be calculated for a solid film as a function of the film shear modulus and ball-race friction coefficient. The calculated effective viscosity can subsequently be used as an input to a numerical model of cage motion and stability. Results from a sample calculation of effective viscosity and prediction of cage stability for a turbopump bearing are presented for films of molybdenum disulfide (MoS2 ) and polytetrafluoroethylene (PTFE).

Copyright © 1987 by ASME
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