Abstract: A locking device for clamping onto a shaft is composed of a collar and a ring fitted onto the shaft. The collar has an end wall and an axial region extending over an outer inclined contact surface of the ring. The ring and the collar end wall have inner surfaces confronting the outer surface of the shaft which are separated by sliding radial surfaces of the collar and the ring. Screw-threaded elements set in threaded bores in the axial region of the collar can be tightened against the outer surface of the ring to cause contact zones of the inner surfaces to exert clamping force on the shaft at diametrically opposed positions.

Abstract: A locking device for clamping onto a shaft is composed of a collar and a ring both fitted onto the shaft. The collar has an end wall and an axial region extending over an outer inclined contact surface of the ring. The ring and the collar end wall have inner contact surfaces confronting the outer surface of the shaft which are separated by sliding radial surfaces of the collar and the ring. Screw-threaded elements set in threaded bores in the axial region of the collar can be tightened against the outer contact surface of the ring to cause the inner contact surfaces to exert clamping force on the shaft.

Abstract: A rolling-element bearing assembly has a cover fitted to one of the races. The cover is in the form of a cap provided with lugs or projections which extend axially and radially outwards from the peripheral edge of the open end of the cap. The lugs of projections have lips which engage in a groove in the associated bearing race. The cap is resiliently deformable to an extent which permits the easy release of the lips from the groove by manual squeezing of the cap. Conversely, the cap can be urged manually against the associated bearing race to cause the lips of the lugs or projections to engage in the groove in a snap-fitting action.