Linear bearing with self adjusting mechanism

摘要

A linear bearing is provided with a self-adjusting mechanism for urging the bearing members (e.g., rollers or sliders) onto a guide surface to compensate for dimensional variation of the guide (e.g., a shaft or rails) on which it runs, and for mechanical wear. In one example a bearing body (1) with a cylindrical bore contains ball races (16) mounted on axles (18) and located in carriers (28). The position of the axles in relation to a ramp (20) on which they rest determines the adjustment of the bearing. Self-adjustment is effected by the use of springs to maintain a tension between the carriers and eliminate play by trapping the axle-roller assemblies between the taper and shaft. A screw-thread system can provide for manual adjustment of the linear bearing. Other embodiments are described.