Abstract: A self-centering clutch release bearing, having means for enabling its axial sliding on a tube guide, enabling substantial radial movement of the clutch release bearing, and insuring axial pressure so that the clutch release bearing remains entered after radial movement. A ring slides directly on the tube guide, and a sleeve fits inside the bearing's inner race. The ring fits in the sleeve and radial end surfaces of the ring engage end surfaces of the sleeve. Either the sleeve or the ring has a groove whose axial ends engage radial walls of the other.