Effects of Lubricants, Metals, Temperature, and Atmospheric Environments on Gear Load-Carrying Capacity

[+] Author and Article Information
B. B. Baber, E. L. Anderson, P. M. Ku

Southwest Research Institute, San Antonio, Texas

J. of Lubrication Tech 90(1), 117-124 (Jan 01, 1968) (8 pages) doi:10.1115/1.3601526 History: Received June 30, 1967; Online August 23, 2011


Experimental gear load-carrying capacity results are presented for three different gear materials and a variety of lubricants of different chemical classes and viscosities, with emphasis on high-temperature operation in air and nitrogen environments. The lubricant-metal-atmosphere interaction was found to be complex and could not be predicted by simple means. With a given gear material in an air environment, load-carrying capacity was found to decrease with increasing temperature until a minimum value was reached, and then to increase with further increase in temperature. A substantial reduction in load-carrying capacity was noted when the air environment was replaced with nitrogen. In addition, the increase in load-carrying capacity noted at high temperatures in air environment was not observed when nitrogen environment was used. This general behavior was, however, quite different when another gear material was used.

Copyright © 1968 by ASME
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