Motion of Unbalanced Balls in High-Speed Angular Contact Ball Bearings

[+] Author and Article Information
H. Kawamura, K. Touma

Tribology Research & Development, Nippon Seiko K. K. (NSK), Fujisawa, Kanagawa, Japan

J. Tribol 112(1), 105-110 (Jan 01, 1990) (6 pages) doi:10.1115/1.2920213 History: Received February 16, 1989; Online June 05, 2008


This paper reports on an experimental study of the three-dimensional ball motion of an unbalanced ball in a 50-mm bore angular contact ball bearing operating at high speeds under axial loads. One bearing ball, which was unbalanced by making a small hole in it, was magnetized and the motion of the ball was determined using Hall-elements. The bearing was tested under various loads and speeds up to 12,000 rpm. The influence of unbalance eccentricity on the unbalanced ball’s motion was investigated.

Copyright © 1990 by The American Society of Mechanical Engineers
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