RESEARCH PAPERS: Power Transmission and Gearing Papers

Into Mesh Lubrication of Spur Gears With Arbitrary Offset Oil Jet. Part 2: For Jet Velocities Equal to or Greater Than Gear Velocity

[+] Author and Article Information
L. S. Akin

Mechanical Engineering Department, California State University, Long Beach, Calif.

D. P. Townsend

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio

J. Mech., Trans., and Automation 105(4), 719-724 (Dec 01, 1983) (6 pages) doi:10.1115/1.3258542 History: Received May 31, 1983; Online November 19, 2009


An analysis was conducted for into mesh oil jet lubrication with an arbitrary offset and inclination angle from the pitch point for the case where the oil jet velocity is equal to or greater than gear pitch line velocity. Equations were developed for minimum and maximum oil jet impingement depth. The analysis also included the minimum oil jet velocity required to impinge on the gear or pinion and the optimum oil jet velocity required to obtain the best lubrication condition of maximum impingement depth and gear cooling. It was shown that the optimum oil jet velocity for best lubrication and cooling is when the oil jet velocity equals the gear pitch line velocity. When the oil jet velocity is slightly greater than the pitch line velocity, the loaded side of the driven gear and the unloaded side of the pinion receive the best lubrication and cooling with slightly less impingement depth. As the jet velocity becomes much greater than the pitch line velocity the impingement depth is considerably reduced and may completely miss the pinion.

Copyright © 1983 by ASME
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