Abstract: The abstract relates to a hydraulic clutch release system, particularly for motor vehicles. The system 1 has a master cylinder and a slave cylinder, and the slave cylinder has a piston 7 which is annular in form and works inside an annular cylinder 2. The leading end of the cylinder is fitted with a seal 9 which is mounted on a one-piece seal carrier 10a through an undercut part of the carrier in which the seal fits without leaving any empty space.

Abstract: The abstract relates to a hydraulic clutch release system, particularly for motor vehicles. The system 1 has a master cylinder and a slave cylinder, and the slave cylinder has a piston 7 which is annular in form and works inside an annular cylinder 2. The leading end of the cylinder is fitted with a seal 9 which is mounted on a one-piece seal carrier 10a through an undercut part of the carrier in which the seal fits without leaving any empty space.

Abstract: A hydraulic clutch release system, particularly for motor vehicles has a master cylinder and a slave cylinder, and the slave cylinder has a piston 7 which is annular in form and works inside an annular cylinder 2. The leading end of the cylinder is fitted with a seal 9 which is mounted on a one-piece seal carrier 10a through an undercut part of the carrier in which the seal fits without leaving any empty space.

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.

Abstract: The invention concerns a linear bearing element mounted on the running race of a guide rail and comprising, on at least one of its two front ends, a wiper which bears by an end region against the running face to retain lubricant in the linear bearing element, at lease one lubricant supply device, with its inlet end connected to an outer supply duct and its outlet, end connected with the bearing region being arranged on or in the bearing element.

Abstract: The invention concerns a wiper unit for a bearing component, preferably a linear rolling bearing component, mounted on a raceway of a guide rail and comprising at each front end, a wiper retained by a carrier plate, the wiper being provided with lubricant canals for supplying lubricant to the bearing component, and an end region of the wiper resting on the raceway to retain lubricant in the bearing component.

Abstract: Wiper unit for a bearing element, preferably a rolling bearing element, which is slidably mounted on the running surface of a shaped part and at least one of its front ends comprising a wiper blade retained by a supporting plate and whose one end region is in contact with the running surface for cleaning the same, characterized in that the wiper blade (5) comprises several flexible tongues (9 to 11) which lie in one comon plane before the mounting of the wiper unit on the bearing element (1) and whose ends are in resilient contact with respective sections of the running surface of the shaped part (2) in the assembled state.

Abstract: Tensioning device, particularly a belt tensioning device, for the drive of auxiliary aggregates of an internal combustion engine comprising a swivel arm at one end of which a tension roller for the belt is rotatably mounted and whose other end is plugged by means of a hub onto a journal which is parallel to the axis of rotation of the tension roller and arranged in a fixed pot-shaped housing, a spring whose one end is fixed to the swivel arm and whose other end is fixed to the housing and, arranged in the housing, a friction damping members which produces damping forces of differing magnitude for the swivel arm in the two directions of movement and has a fraction lining lying against the housing wall and acted upon by the swivel arm, characterized in that the friction damping members comprises an inner ring fixed to the swivel arm, an outer ring lying against the friction lining and several rolling elements arranged between these rings and disposed in troughs in the rings for rolling movement along ramps.

Abstract: A method for the production of an axial roller bearing cage comprising applying pressure transverse to its longitudinal direction along the entire longitudinal extent of one end flange of a flat cage strip of plastically deformable material with two spaced end flanges connected by a plurality of crossbars to form pockets for receiving rollers and an apparatus for effecting the said method.

Abstract: Novel recirculating roller bearings for the longitudinally moveable mounting of an element on a planar bearing surface comprising a bearing body with at least one straight race section, a return section parallel to the said race section, two preferably semicylindrical end deflecting sections connecting the ends of the parallel return section and race section to form a closed circulating track and a plurality of rollers in said circulating track, the improvement comprising retaining elements for successive pairs of rollers engaging circumferential grooves in the race edges.