Abstract: A thrust bearing for the clutch release mechanism of a motor vehicle has a rotatable annular ring, a non-rotatable annular ring and a plurality of balls. The rings are capable of limited radial relative movement. One of the rings has a planar raceway and the other ring has a grooved raceway.

Abstract: A clutch release bearing and actuating mechanism, for a motor vehicle, comprises a clutch-disengaging device which is actuable, via a rolling-element thrust bearing, by a hydraulically actuated device. The hydraulically actuated device comprises a pair of stepped cylindrical members which define an annular chamber therebetween. The outer cylindrical member is slidable over the inner cylindrical member. The inner cylindrical member is fast to a housing member and the annular chamber is connectible to a supply of hydraulic fluid. The inner ring of the thrust bearing is fast to the outer cylindrical member and the outer ring of the bearing is flexibly coupled to the clutch-disengaging device.