A STUDY OF THE INFLUENCE OF LUBRICANTS ON HIGH-SPEED ROLLING-CONTACT BEARING PERFORMANCE
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. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1962
- Accession Number
- AD0269512
Entities
People
- J. Clarence Bell
- Lewis B. Sibley
Organizations
- Battelle Memorial Institute