Ball or roller thrust bearing with integral seal - has plastics cage with sealing lips formed on sides of radial slots

摘要

The ball- or roller - thrust bearing with integral seal has a cage with radial slots (3a, 3b) extending from either or both rims into the locating recess for the rolling elements (1). On both sides of these slots the edges of the cage are formed into sealing lips (4a, 5a; 5b) embodying a peripheral internal groove. Into this fit O-rings (6a, 6b) of elastic material, pressing the lips against the races and sealing the slots. If the rolling elements are rollers, retaining rings are fitted to the cage inner and outer rims.