A clutch release bearing for a motor vehicle includes a thrust element having an axial axis, a guide element in the form of a tubular bushing that supports the thrust element, and a self-aligning sleeve including an annular body and a plurality of radial ribs each having a free end. The plurality of ribs extend towards the guide element from the annular body. The free ends of at least a first set of the plurality of radial ribs radially contact the cylindrical external surface of the bushing, and the bushing includes at least one opening in a cylindrical external surface of the bushing that is configured to receive one of the plurality of radial ribs.

A release bearing arrangement is provided for a piston of a clutch cylinder of a multi-plate clutch, which piston is axially movable along a shaft of a motor vehicle. The release bearing arrangement includes a release bearing for axial force transmission of an actuating force introduced by the piston to a transmission device of the multi-plate clutch. The release bearing has a first bearing plate, a second bearing plate and a plurality of rolling elements, the rolling elements being arranged so as to roll between the first bearing plate and the second bearing plate. The release bearing arrangement has a self-centering device for radial self-centering of the release bearing relative to the shaft and/or relative to the piston that is axially movable along the shaft.

A clutch release bearing for a motor vehicle includes a thrust element having an axial axis, a guide element supporting said thrust element, and a self-aligning sleeve including an annular body and a plurality of radial ribs extending towards the guide element from the body with a free end of each of the ribs radially contacting the guide element. The guide element includes angular retaining members for limiting angular movement of at least one radial rib of the plurality of radial ribs, which members may be integrally formed with the guide element or formed as separate elements attached to the guide element.

A clutch release bearing for a motor vehicle includes a thrust element having an axial axis, a guide element in the form of a tubular bushing that supports the thrust element, and a self-aligning sleeve including an annular body and a plurality of radial ribs each having a free end. The plurality of ribs extend towards the guide element from the annular body. The free ends of at least a first set of the plurality of radial ribs radially contact the cylindrical external surface of the bushing, and the bushing includes at least one opening in a cylindrical external surface of the bushing that is configured to receive one of the plurality of radial ribs.

A clutch release bearing for a motor vehicle includes a thrust element having an axial axis, a guide element supporting said thrust element, and a self-aligning sleeve including an annular body and a plurality of radial ribs extending towards the guide element from the body with a free end of each of the ribs radially contacting the guide element. The guide element includes angular retaining members for limiting angular movement of at least one radial rib of the plurality of radial ribs, which members may be integrally formed with the guide element or formed as separate elements attached to the guide element.

A clutch thrust bearing device includes a rolling bearing having a fixed ring, a rotatable ring, and a plurality of rolling elements between the rings; an axially movable piston disposed between a housing and the rolling bearing and having a radial plate pressing against an axial contact surface of the fixed ring; at least one resilient seal member sealing the piston relative to the housing; and a resilient body exerting an axial preload onto an axial contact surface of the rotatable ring. The rolling bearing is axially movable by the piston to compress the resilient body. A resilient sleeve is mounted to the fixed ring and has at least one sealing lip in sliding contact with the rotatable ring.

A clutch thrust bearing device includes a rolling bearing having a fixed ring, a rotatable ring, and a plurality of rolling elements between the rings; an axially movable piston disposed between a housing and the rolling bearing and having a radial plate pressing against an axial contact surface of the fixed ring; at least one resilient seal member sealing the piston relative to the housing; and a resilient body exerting an axial preload onto an axial contact surface of the rotatable ring. The rolling bearing is axially movable by the piston to compress the resilient body. A resilient sleeve is mounted to the fixed ring and has at least one sealing lip in sliding contact with the rotatable ring.

A clutch thrust bearing device having a ball bearing with a fixed inner ring, a rotatable outer ring, and at least one series of balls located in a raceway chamber disposed between the rings. The device also provides a piston having a substantially radial portion, the fixed inner ring being in axial abutment against the substantially radial portion. The piston further provides an axial portion arranged in a bore of the fixed inner ring of the ball bearing, the axial portion being provided with at least one outwards radial projection that extends between the fixed inner ring and the rotatable outer ring.

A clutch thrust bearing device having a ball bearing with a fixed inner ring, a rotatable outer ring, and at least one series of balls located in a raceway chamber disposed between the rings. The device also provides a piston having a substantially radial portion, the fixed inner ring being in axial abutment against the substantially radial portion. The piston further provides an axial portion arranged in a bore of the fixed inner ring of the ball bearing, the axial portion being provided with at least one outwards radial projection that extends between the fixed inner ring and the rotatable outer ring.

A bearing having an inner race, an outer race and a wear race mounted to press against an external face of one of the races and fastened on the race is provided. The wear race provides at least one annular flange locally covering an internal face of the race opposite the external face. The bearing further provides a sealing member fastened on the other race and includes at least one sealing lip in friction contact with the annular flange of the wear race.