A New Running Torque Formula for Tapered Roller Bearings Under Axial Load

[+] Author and Article Information
S. Aihara

Research Center, Nippon Seiko K.K., Fujisawa, Kanagawa, Japan

J. Tribol 109(3), 471-477 (Jul 01, 1987) (7 pages) doi:10.1115/1.3261475 History: Online October 29, 2009


Conventional formula for calculating the running torque of tapered roller bearings often showed discrepancy from actual running torque, particularly under axial load. Therefore, an equation was formulated based on the knowledge of EHL rolling resistance and EHL oil film thickness. Careful examination of actual bearing running torque suggested the load dependency of EHL rolling resistance which previous theory did not include. Such load effect was confirmed by means of two disc machine and the equation was partly corrected. A new running torque formula of a tapered roller bearing under axial load was proposed and good agreement with actual bearing torque was confirmed.

Copyright © 1987 by ASME
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