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A Study of the Influence of Lubricants on High-Speed Rolling-Contact Bearing Performance

Report Number: ASD TR 61-643
Author: Sibley, Lewis B.
Author: Kannel, Jerrold W.
Author: Allen, C. Malcolm
Author: Bell, J. Clarence
Corporate Author: Battelle Memorial Institute
Laboratory: Directorate of Materials and Processes
Date of Publication: 1962-08
Pages: 59
Contract: AF 33(616)-7257
Project: 3044
Task: 30169
AD Number: AD0269512

Lubrication processes at rolling contacts are studied with a rolling-disk machine and X-ray system capable of measuring dynamic oil-film thickness and deformation at rolling contacts. Data are presented for a refined engine oil, a white mineral oil, and a polyphenyl ether over extended ranges of operating conditions. The measured minimum film thickness at rolling contacts transverse to the rolling direction with these lubricants, having bulk viscosities ranging from 6 to over 500 cp, varied from 3 to 100 microinches. For low-viscosity lubricants under moderate conditions of load, speed, and temperature, measured film thickness correlated well with elasto-hydrodynamic lubrication theory including elastic deformation of contact surfaces. Measured film thickness decreased significantly below theoretical under increasing load, speed, viscosity, and ambient temperature, by as much as a factor of 40. Elastic deformation tests at rolling contacts indicated that contact stresses were less severe for conditions of low load and high speed and with high-viscosity lubricants. A new theory of rolling contact lubrication was developed.

Lockheed Martin Missiles & Fire Control
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