Accession Number : AD0276537

Title :   INFLUENCE OF LUBRICATION ON ENDURANCE OF ROLLING CONTACTS

Corporate Author : SKF INDUSTRIES INC PHILADELPHIA PA

Personal Author(s) : SINDLINGER,N.E. ; MARTIN,J.A. ; HUTTENLOCHER,D.F.

Report Date : 22 APR 1962

Pagination or Media Count : 1

Abstract : Experimental studies were continued with the rolling four-ball test machine using conductivity and radioactive transfer techniques. Experimental studies were also continued with a refined direct-beam X-ray method for studying oil-film thicknesses at the contact in the two-ball test machine. The review of elastohydrodynamic lubrication theory for the generation of lubricant film pressures between two rollers or balls was continued. Progress on the development of a computer technique for the interpretation of measured lubricant-induced ball contact deformations in terms of contact stresses is also reviewed. The interaction of a lubricant film with the surface geometry of typical test balls in the four-ball tester was analyzed theoretically in an effort to provide further interpretation of conductivity test data in the transition region between complete metallic contact and a complete lubricant film. A mathematical analysis of the direct-beam X-ray oil-film thickness measurement method applied to parallel flats has been conducted as the first stage of a comprehensive analysis to predict the linearity of the direct-beam method in the actual loaded two-ball test configuration. (Author)

Descriptors :   *BALL BEARINGS, *LUBRICATION, BEARINGS, DEFORMATION, ELASTIC PROPERTIES, ELECTRICAL CONDUCTIVITY, FAILURE (MECHANICS), FILMS, HYDRODYNAMICS, METALS, PRESSURE, ROLLER BEARINGS, SURFACES, TEST EQUIPMENT, THEORY, TRACER STUDIES, TRANSPORT PROPERTIES, X RAY SPECTROSCOPY

Distribution Statement : APPROVED FOR PUBLIC RELEASE