Abstract: A multi-part synchronizing ring (1) of a synchronization device with an annular base body (2) and with at least one friction surface (19) on the base body (2), as well as with teeth (3) pointing outwards, has at least one driver element (4, 5), wherein the driver element (4, 5) is formed on an annular disk (6) separate from the base body (2).

Abstract: A multi-part synchronizing ring (1) of a synchronization device with an annular base body (2) and with at least one friction surface (19) on the base body (2), as well as with teeth (3) pointing outwards, has at least one driver element (4, 5), wherein the driver element (4, 5) is formed on an annular disk (6) separate from the base body (2).

Abstract: The invention concerns a rolling bearing for a release device of a friction clutch. The rolling bearing (1a) includes a rotating outer bearing ring (12) and a rotationally fixed inner bearing ring (2). Rolling elements (15) are guided in an inner space (14) between the bearing rings which is sealed by a sealing element. The inner space (14) of the rolling bearing (1a) is sealed on one side of the rolling elements (15) by a sealing element (20) and on the other side of the rolling elements (15) by a retention element (7). The sealing element and the retention element are each rotationally fixed on one of the bearing rings, and free ends of the sealing element and the retention element extend up to the respective other bearing ring of the rolling bearing (1a) to create a large axial or radial overlap which forms an annular gap (25, 26).

Abstract: A release bearing (1) for actuating a gearshift clutch of an automotive vehicle comprises an angular contact ball bearing (3) in which forces are transmitted from one bearing raceway to another bearing raceway at an angle of pressure .alpha. to the transverse plane of the angular contact ball bearing (3). To improve the bearing capacity of such a release bearing (1), the angle of pressure .alpha. is configured to be .gtoreq.36.degree. and <45.degree.. Friction between the balls and the raceways of the angular contact ball bearing is reduced by the fact that an osculation K.sub.AU on the outer ring (6) is .gtoreq.1.15 and an osculation K.sub.IR on the inner ring (10) is .gtoreq.1.07.