Torque Characteristics of Solid-Lubricated Precision Bearings During Oscillatory Motion

Abstract

MoS₂ sputter-coated as well as uncoaled angular-contact ball bearings were tested with various cage materials in a low-speed regime. Various self-lubricating polymers either “neat” or with additives and metallic cages were tested. The emphasis of this paper is to report on significant torque increases, i.e., torque bumps observed during non-ball overlap, oscillatory motion for some race/cage combinations. In some race/cage combinations, torque bumps can be minimized by proper run-in. No attempt was made to run the bearings to failure, although certain race/cage combinations did in fact fail before the end of test.

Presented at the 48th Annual Meeting in Calgary, Alberta, Canada May 17–20, 1993

KEY WORDS:

• Solid Lubrication
• Molybdenum Disulfide
• Composite
• Materials
• Self-Lubricating

Notes

Presented at the 48th Annual Meeting in Calgary, Alberta, Canada May 17–20, 1993