Accession Number:

AD0269512

Title:

A STUDY OF THE INFLUENCE OF LUBRICANTS ON HIGH-SPEED ROLLING-CONTACT BEARING PERFORMANCE

Descriptive Note:

Rept, for 1 May 60-28 Feb 61,

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OH

Personal Author(s):

Report Date:

1962-08-01

Pagination or Media Count:

1.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE