A Study of the Influence of Lubricants on High-Speed Rolling-Contact Bearing Performance
Report Number: ASD TR 61-643
Author(s): Sibley, Lewis B., Kannel, Jerrold W. , Allen, C. Malcolm, Bell, J. Clarence
Corporate Author(s): Battelle Memorial Institute
Laboratory: Directorate of Materials and Processes
Date of Publication: 1962-08
Pages: 59
Contract: AF 33(616)-7257
DoD Project: 3044
DoD Task: 30169
Identifier: AD0269512
Abstract:
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.
Provenance: Lockheed Martin Missiles & Fire Control
Author(s): Sibley, Lewis B., Kannel, Jerrold W. , Allen, C. Malcolm, Bell, J. Clarence
Corporate Author(s): Battelle Memorial Institute
Laboratory: Directorate of Materials and Processes
Date of Publication: 1962-08
Pages: 59
Contract: AF 33(616)-7257
DoD Project: 3044
DoD Task: 30169
Identifier: AD0269512
Abstract:
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.
Provenance: Lockheed Martin Missiles & Fire Control