Abstract: A tappet (1) for a valve operating mechanism for an internal combustion engine comprising a thin-walled jacket (3) guided in a bore (5) of a cylinder head (6) and provided in the cam direction with a circular ring-shaped bottom (4) which surrounds a circular bottom (16) of a concentrically arranged guide sleeve (7) in whose bore (9) a clearance compensation element (10) is arranged for longitudinal displacement, the jacket (3) comprising the circular ring-shaped bottom (4) and the guide sleeve (7) comprising the circular bottom (16) being engageable by cams of differing pitch and relatively displaceable axially with respect to each other and with respect to the bore (5) of the cylinder head (6), and a first, central cam (14) of smaller pitch and at least one cam (15) of larger pitch selectively engaging the circular bottom (16) and the circular ring-shaped bottom (4) respectively, characterized in that means are arranged in the jacket (3) which prevent an axial rotation of the tappet (1) in the bore (5) of th

Abstract: A tappet for the valve drive of an internal combustion engine comprising a hollow cylindrical housing arranged with its thin-walled jacket for axial displacement and a receiving bore of a cylinder head which is optimized with respect to its reliability and its operating weight while at the same time, using a thin-walled element to delimit the annular oil reservoir by a reliable manufacturing method.

Abstract: A tensioning device (1) for belt or chain drives comprising a tension arm (3) which carries a tension roller (4) on one end and is mounted at a second end for rotating together with a shaft (6) in a housing (2) while being resiliently supported on the housing (2) by a torsion spring (16), the tensioning device (1) further comprising a friction disk (10) which is rigidly connected to the shaft (6) or the tension arm (3), a friction lining (15,24,27) being arranged between a friction surface (10a) of the friction disk (10) and an axial contact surface (14) of the housing (2), characterized in that the contact surface (14) comprises a means (23,25,28) which engages the friction lining (15,24,27) by positive and/or force engagement and prevents any rotation of said friction lining (15,24,27) with respect to the contact surface (14).

Abstract: In a roller bearing (1) for the straightline movement of a supporting component (2) along a guide rail (6), the quantity of re-lubrication is to be minimized regardless of the installation position of the roller bearing (1). This is acheived by the invention in that a separate lubricant line (13) is inserted in a channel (10) of a head (8) for the lubricant supply which takes the form of a single-lipped seal (16) in a region in which lubricacant exiet points are desired.

Abstract: A bearing (1) for the wheel suspension strut of a motor vehicle has an inner and an outer bearing ring (2, 3). The inner bearing ring (2) radially encloses a clearance ring (5) concentrically arranged in its bore (4). A bearing housing (8) made of deep-drawn sheet metal encloses the outer bearing ring (3). In order to reduce the total mass of the bearing and to allow it to be easily linked to a neighboring part of the car body, the bearing housing (8) forms a single piece with a flange (9) that extends essentially transversely to the bearing axis (10). The flange has at least one bore and screw (12, 13) for securing the suspension strut bearing (1) to a neighboring part of the car body.

Abstract: The invention concerns a cage for full-type roller bearings comprising pockets formed by crossbars, into which pockets peripheral sections of cylindrical rolling elements extend, the cage being arranged radially inside or outside of a pitch circle of the rolling elements.

Abstract: A cold strip for manufacturing deep-drawn, case-hardened precision components, particularly rolling bearing and engine components, in which a core material (2) is roll clad at least on one side with a cladding material (3), characterized in that the core material (2) is a low-carbon cold or hot steel strip and the cladding material (3) is a cold or hot strip with increased carbon content, the core (2) and the cladding material (3) having different physical and chemical properties which complement each other, particularly with regard to deep-drawability, hardenability, constant reverse-bend fatigue strength and wear resistance.

Abstract: A tappet (2) has a hydraulic clearance compensating element (8) composed of a high pressure chamber (18), a housing (3) with a spring-loaded, longitudinally movable compensating piston (15) and a free piston (11) with a smaller diameter than the compensating piston (15). In order to obtain by simple manufacturing means a reduced elasticity in valve operation during the base circle phase of a cam (6), the ratio between the projected surface (20) of the compensating piston (15) that faces the high pressure chamber (18) and the projected surface (19) of the free piston (11) that faces the high pressure chamber (18) is higher than 3.

Abstract: A locking element freewheel comprising an outer race ring (1) and an inner race ring (2) with cylindrical and mutually concentric locking surfaces (7,8) between which tiltably suspended locking elements (5) are guided in a cage (6) wherein the central portion of the locking surfaces (7,8) of the outer race ring (1) or inner race ring (2) has a smaller or larger diameter than the ends thereof. If, due to differing wall thicknesses, the race rings (1,2) have differing rigidity, the edge region of highest rigidity of the locking surfaces (7,8) of the outer race ring (1) and/or inner race ring (2) has a larger or smaller diameter and by such a profiling of the locking surfaces, an overloading at the edges of the locking elements is prevented.

Abstract: A pulser ring made of a ferritic iron alloy with the following composition (in wt. %)max. 0.12% C,max. 1.00% Si,max. 1.00% Mn,max. 0.045% P,max. 0.030% S andmax. 18% Cr, with the rest being iron with impurities conditional upon the melting process and a method of heat treating the same.

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: An extruded aluminum alloy rail for supporting a shaft for a linear guidance system, the rail comprising a vertical body with a longitudinal notch on its upper surface for receiving the shaft along two generatrixes and a pair of symmetrical longitudinal wings at its base for resting on a fixed stand, the wings being configured so that only the smallest possible surface areas of the wing rest on the support supporting the rail which together with bushed ball bearings support shafts for assuring the linear guidance of high precision modules or mobile platens.

Abstract: A cup-shaped valve tappet (1,25) for actuating a valve of an internal combustion engine, comprising a cylindrical jacket (2,26) closed at one end by a bottom (3,27) and on whose outer peripheral surface (17,43) a circumferential groove (18,44) is formed by non-cutting shaping, while on an inner peripheral surface (5,37) of said cylindrical jacket a sheet metal cylinder (4,39) is guided substantially without play, said valve tappet further comprising a guide sleeve (7,35) in which a hydraulic clearance compensation element (8,34) is received, characterized in that the sheet metal cylinder (4,39) extends at least up to a region of the jacket (2,26) comprising the circumferential groove (18,44) while a bead (19,46) formed by non-cutting shaping on the inner peripheral surface (5,37) of the jacket (2,26) bears against a circumferential groove (20,48) of the sheet metal cylinder (4,39).

Abstract: The novel mechanical valve tappet of the invention arranged in a guide bore of a cylinder head of an internal combustion engine is comprised of a cup-shaped housing with a hollow cylindrical wall (1) closed at one end by a bottom (2) which is contacted exteriorly by a control cam while a first flat end face of an adjusting element (7) bears against an inner surface of the bottom (2), a second flat end face of the adjusting element (7) which is parallel to the said first flat end face is in contact with an end of a valve stem of an engine valve, and the adjusting element (7) has a cylindrical peripheral surface and is retained by force engagement in a bore (6) of a hub (3) fixed to the said inner surface of the bottom (2), characterized in that an element (9, 11, 15, 16, 20, 21, 22, 26) which is resiliently biased with respect to the adjusting element (7) and the hub (3) is arranged between the hub (3) and the adjusting element (7).

Abstract: An eccentric bearing arrangement including counterweights used in the hydraulic pump of an anti-lock brake system. The invention is directed to an apparatus which provides an eccentric motion applied through an essentially non-rotating outer bearing and a counterweight to a designed eccentricity in order to diminish vibration caused by the eccentric element. Embodiments of the invention are for use in anti-skid brake system pumps that require a pulsating, eccentric load that is ultimately applied to a set of radially disposed hydraulic plungers. The apparatus of the present invention comprises an outer ring, an inner ring mounted on a drive shaft, and an outer roller bearing disposed in the raceway formed between the inner and outer rings. The raceway of the inner ring is eccentric to the drive shaft by an amount equal to one half the design stroke of the anti-lock brake system plungers. The outer ring is in direct contact with the hydraulic plunger faces.

Abstract: A constant velocity universal joint including a housing having a plurality of longitudinally extending channels has an inner rotatable member having a plurality of radially disposed trunnions, each of which extends into a respective one of the channels. A ball and socket joint, including a ball member and a socket member, is disposed intermediate each trunnion and the housing. A bearing is located between each trunnion and the respective ball member to permit relatively frictionless axial movement between the trunnion and the respective ball member. The bearing includes a generally rectangularly shaped cage retaining a plurality of needle rollers on at least two of the sides of the cage. The central longitudinal axes of the needle rollers are disposed normally to the direction of axial movement of the trunnion with respect to the respective ball member.

Abstract: The invention concerns a switchable locking element freewheel with two concentric cage rings and locking elements lodged in pockets thereof, the cage rings being movable relative to each other for switching the freewheel. In order to make such a freewheel basically operable in two opposing directions and to provide simple switchover facilities herefor and also for cases in which switchability is required only in one direction, the relative movement of the two cage rings serving to switch the freewheel is an axial displacement which, with a view to any further embodiments of the freewheel, can be converted into a rotary movement.

Abstract: An axial beaing unit comprising two bearing discs (1, 2) with rolling elements (3) disposed therebetween, each of the bearing discs (1, 2) comprising an axially oriented cylindrical flange, which cylindrical flanges overlap each other in the axial direction, the flange of one of the bearing discs (1) being made as an overhanging flange (9) comprising a radially projecting end portion (3) at its free end (11), and the flange of the other bearing disc (2) being a retaining flange (10) comprising a retaining surface (14) facing the end portion (13), the end portion (13) engaging behind the retaining surface (14) so that the bearing discs are connected to each other secure against loss, characterized in that the radially projecting end portion (13) comprises several elastically yielding bosses (12) made without chip-removal and arranged spaced apart on the circumference of the end portion (13), which bosses (12) engage as a result of radial elastic relaxation behind the retaining surface (14).

Abstract: A method of and apparatus for adjusting the preload of an anti-friction bearing is disclosed. A compressive load is applied to the opposite transverse faces of the outer races of a linear bearing by hydraulic or pneumatic cylinders. While the bearing assembly is held in compression, a test force is applied to one end of the inner race or slide in a direction parallel to its constrained direction of travel to cause the slide to move through the bearing at a steady rate of travel. While the slide is in motion, rolling friction characteristics are measured by a force gauge. The resulting force gauge measurement corresponds to a particular bearing preload.

Abstract: A finger lever or a rocker arm (4,25,39) for a valve actuating mechanism (1) of an internal combustion piston engine comprising a roller (5) which rolls against the periphery of a cam (3) and is rotatably mounted on a pin (17) guided in side walls (18,19) of the finger lever or the rocker arm (4,25,39) which is provided with a bore (23) directed towards the periphery of the roller (5) and communicating with a lubricant duct (38), characterized in that the bore (23,27,43) has a diameter of .ltoreq.0.5 mm in the region of its smallest cross-section.