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Abstract
A series of friction and wear experiments have been carried out on materials and lubricants used in miniature inertial-grade ball bearings. The materials studied, all used in porous bearing cages, include three types of porous polyimide and three types of cotton-reinforced phenolic. The lubricants used were super-refined mineral oils having various viscosities.
The experimental apparatus was designed to simulate as accurately as possible the ball-cage contact geometry in an R4 gyroscope bearing. A sphere-on-flat geometry was used, the sphere being a 0.0024 meter diameter bearing ball rotating at 24 000 rpm, and the flat being a specimen of cage material.
The coefficient of friction was determined for the dry materials and for the various materials impregnated with super-refined mineral oils.
Presented at the 32nd Annual Meeting in Montreal, Quebec, Canada, May 9–12, 1977
Notes
Presented at the 32nd Annual Meeting in Montreal, Quebec, Canada, May 9–12, 1977