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RESEARCH PAPERS

Operating Limitations of High-Speed Jet-Lubricated Ball Bearings

[+] Author and Article Information
E. V. Zaretsky

NASA Lewis Research Center, Cleveland, Ohio

H. Signer

Industrial Tectonics, Inc., Compton, Calif.

E. N. Bamberger

General Electric Co., Cincinnati, Ohio

J. of Lubrication Tech 98(1), 32-39 (Jan 01, 1976) (8 pages) doi:10.1115/1.3452768 History: Received July 16, 1975; Online October 20, 2010

Abstract

A parametric study was performed with 120-mm bore angular-contact ball bearings having a nominal contact angle of 20 deg. The bearings either had an inner- or an outer-race land riding cage. Lubrication was by recirculating oil jets. The oil jets either had a single or dual orifice. Thrust load, speed, and lubricant flow rate were varied. Test results were compared with those previously reported and obtained from bearings of the same design which were under-race lubricated but run under the same conditions. Jet lubricated ball bearings were limited to speeds less than 2.5 × 106 DN. Bearings having inner-race land riding cages produced lower temperatures than bearings with outer-race land riding cages. For a given lubricant flow rate dual orifice jets produced lower bearing temperatures than single orifice jets. However, under-race lubrication produced under all conditions of operation lower bearing temperatures with no apparent bearing speed limitation.

Copyright © 1976 by ASME
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