Importance

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Abstract

Self-lubricating bearings and methods for manufacturing these bearings are provided in which a lining comprising PTFE and a polymer bondable fiber are disposed within a polymeric material comprising at least about 5.0 weight percent carbon powder. In wear tests, graphite additions in the epoxy resin of the liner of the preferred bearings have resulted in wear depth reductions of 60% or better, with a lower coefficient of static friction during the early periods of wear. Additionally, lining epoxy compositions comprising up to about 20.0 weight percent graphite provided sufficient fluidity for current winding equipment to operate, whereas concentrations greater than 20.0 weight percent graphite were harder to manage due to excessive viscosity.

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First Claim