Fundamentals of Rolling-Element Bearing Lubrication
Report Number: ASD-TDR-62-465 p. 77-91
Author(s): Sibley, L. B., Orcutt, F. K., Allen, C. M.
Corporate Author(s): Battelle Memorial Institute
Date of Publication: 1962-05
Pages: 15
Contract: AF 33(616)-7223
DoD Project: 3044
DoD Task: 30169
Identifier: This paper is part of a conference proceedings. See AD0278843
Abstract:
The basic processes of lubrication at the rolling-contact regions between the elements and races in bearings are discussed. Lubricant film-thickness and contact-deformation data with various lubricants in a precision rolling-disk machine, using a special X-ray method, are presented. These data show that lubricant films significantly thicker than molecular dimensions exist at bearing contacts under many practical conditions, and that significant deviations from Hertzian stresses can occur by the action of lubricant pressures, particularly at the edges of the bearing contact regions. Here the lubricant must withstand high shear stresses under rapidly changing pressures to effectively separate bearing surfaces. Even if appreciable breakdown of the lubricant film occurs in the near-contact region, the high-pressure shear behavior of the lubricant at the edges of the contact may still affect bearing contact stresses significantly.
Author(s): Sibley, L. B., Orcutt, F. K., Allen, C. M.
Corporate Author(s): Battelle Memorial Institute
Date of Publication: 1962-05
Pages: 15
Contract: AF 33(616)-7223
DoD Project: 3044
DoD Task: 30169
Identifier: This paper is part of a conference proceedings. See AD0278843
Abstract:
The basic processes of lubrication at the rolling-contact regions between the elements and races in bearings are discussed. Lubricant film-thickness and contact-deformation data with various lubricants in a precision rolling-disk machine, using a special X-ray method, are presented. These data show that lubricant films significantly thicker than molecular dimensions exist at bearing contacts under many practical conditions, and that significant deviations from Hertzian stresses can occur by the action of lubricant pressures, particularly at the edges of the bearing contact regions. Here the lubricant must withstand high shear stresses under rapidly changing pressures to effectively separate bearing surfaces. Even if appreciable breakdown of the lubricant film occurs in the near-contact region, the high-pressure shear behavior of the lubricant at the edges of the contact may still affect bearing contact stresses significantly.
Other options for obtaining this report:
Via the Defense Technical Information Center (DTIC): Identifier: This paper is part of a conference proceedings. Access a record for the conference proceedings, and possibly a pdf download of the report, at DTIC Via National Technical Report Library: This report may be available for download from NTRL. Use the Title from this record to locate the item in DTIC Online Indications of Public Availability No digital image of an index entry indicating public availability is currently available There has been no verification of an indication of public availability from an inside cover statementRelated report(s)
This report is part of the following conference: