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Several levels of ceramic test devices are recommended for the tribological evaluation of ceramic materials for high thermally and mechanically stressed rolling element bearings. A high temperature traction rig, four-ball rig, and full-scale bearing rig provide a systematic series of tests that are used as part of the design and development process for ceramic bearings. Operation of the traction rig from pure rolling to incipient sliding and gross slip allows evaluation of ceramic materials under controlled conditions of normal and tangential shear stress.
ceramic, ceramic bearings, silicon nitride, wear, wear testing, friction, traction, rolling contact, tribology, ceramic tribology
Wedeven Associates, Inc., Newtown Square, PA
J. V. Poplawski & Associates, Bethlehem, PA
Hingley Technology, Ltd., Radnor, PA