Elastomeric rotary bearing - has pressure lobes distributed circumferentially maintaining sliding contact over a range of shaft or bearing dia. tolerances

摘要

A self-lubricating bearing for a rotary shaft/collar combination is an annular lining of elastomeric material prepd. of or having a sliding face coated with a low friction material and having segments of projecting ribs at at least three zones distributed around the seal circumference to produce a balanced set of pressure points around the surface of the moving contact. Ensures that a working contact is maintained for a relatively wide range of dia. tolerances for the sliding interface. Pref. the seal is located by a rigid cage with sub-flanges to inhibit rotary or axial drifting of the seal. The seal body may be made of a self-lubricating rubber or plastic material or may carry a fluoropolymer coating or lining for the sliding interface.