Thermally Induced Seizures of Journal Bearings

[+] Author and Article Information
K. F. Dufrane, J. W. Kannel

Battelle Columbus Division, Columbus, Ohio 43201-2693

J. Tribol 111(2), 288-292 (Apr 01, 1989) (5 pages) doi:10.1115/1.3261908 History: Received February 29, 1988; Online October 29, 2009


The paper presents a simple theory for predicting seizure times for journal bearings. Under conditions of insufficient lubrication when bearing friction is high, seizure is predicted to occur in less than 20 seconds of operation. Insufficient lubrication can occur during bearing start-up, application of unusual loads, or as a result of an interruption of the lubricant supply system. Three examples where bearing seizure has been observed are discussed and the actual times to seize are compared with theoretical predictions. The actual seizure times are slightly less than predicted by theory, which is probably the result of bearing imperfections or uneven loading not considered in the theory.

Copyright © 1989 by ASME
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