SOLID FILM LUBRICATION RESEARCH
Quarterly progress rept. no. 6, 1 Mar-1 Jun 1967,
WESTINGHOUSE RESEARCH LABS PITTSBURGH PA INSULATION AND CHEMICAL TECHNOLOGY DEPT
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This report describes progress during the seventh quarterly period in a program designed to develop a solid film lubricated ball bearing system capable of operation under high speed, high temperature oxidizing conditions. The programs ultimate goal is long-term ball bearing operation at 1500 F and speeds of 10,000 to 30,000 rpm under atmospheric conditions simulating sea-level to 200,000 ft altitudes. A second program objective is to provide parametric design data relating the operating life, load, bearing size, speed, temperature and environment of these bearing systems. This report describes further efforts towards improving the high temperature friction-wear characteristics of unique self-lubricating composites employing WSe2 or WS2 in combination with a gallium alloy. In the area of functional testing, the results of thirty-three tests on 204 and 207 ball bearings that were evaluated during this reporting period are described. The bearings were operated at temperatures up to 900 F and speeds of 10,600. Two significant results obtained during this reporting period are the operation of 1 a 207 ball bearing in 600 F-air at 10,600 rpm for a period of 105 hours, and 2 an identical bearing system at 10,600 rpm in a 900 F environment for a period of 38 hours. In both cases the bearing carried a 50 lb thrust50 lb radial load.
- Lubricants and Hydraulic Fluids