Abstract: A linear rolling bearing has a guide carriage (1) that is U-shaped in cross-section and has two U-legs (6). The guide carriage (1) is slidably supported through balls (3) on two longitudinal sides of a guide rail (2). Each U-leg (6) comprises on an inner surface opposing the guide rail (2) a ground raceway (10) for the balls (3). The raceway (10) is made by a grinding wheel whose diameter is larger than the diagonal dimension of the carriage cavity (7). According to the invention, a stop surface (12) having a retaining contour for a guide member (4) containing the balls (3) is configured on a guide rail-distal outer surface of each U-leg (6) of the guide carriage (1), and the raceway (10) on one of the two U-legs (6) and the stop surface (12) having the retaining contour on the other of the two U-legs (6) are made in common in one work step by the grinding wheel.

Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.

Abstract: A bearing arrangement for supporting a universal joint trunnion in an outer cup includes a radial bearing having cylindrical rolling elements disposed between the trunnion and the outer cup, and a resistance member made of a material to allow elastic deformation and bearing upon a confronting surface area of an end surface of the trunnion. The resistance member and the trunnion are hereby so configured either alone or in combination as to form a large lubricant reservoir. Disposed at a distance to the end surface of the trunnion is a stop member to define an axial gap, whereby the stop member inhibits an axial movement of the trunnion after the trunnion has moved in axial direction to close the gap.

Abstract: A linear rolling bearing has a guide carriage (1) that is U-shaped in cross-section and has two U-legs (6). The guide carriage (1) is slidably supported through balls (3) on two longitudinal sides of a guide rail (2). Each U-leg (6) comprises on an inner surface opposing the guide rail (2) a ground raceway (10) for the balls (3). The raceway (10) is made by a grinding wheel whose diameter is larger than the diagonal dimension of the carriage cavity (7). According to the invention, a stop surface (12) having a retaining contour for a guide member (4) containing the balls (3) is configured on a guide rail-distal outer surface of each U-leg (6) of the guide carriage (1), and the raceway (10) on one of the two U-legs (6) and the stop surface (12) having the retaining contour on the other of the two U-legs (6) are made in common in one work step by the grinding wheel.

Abstract: A connectable bucket tappet having a ring shaped section and avoiding a receiving element for a coupling device which was previously joined thereto in a single piece. A separate, sleeve-shaped component is arranged near the base of the ring shaped section. The component is used for sectionally accommodating a slider for coupling the ring shaped section to a central circular section.

Abstract: A device for changing the control times of gas exchange valves of an internal combustion engine, including a drive wheel in driving connection with a crankshaft and a vane wheel connected to rotate with a camshaft. A plurality of hydraulic working spaces are formed within the device and are divided by the vanes of the vane wheel into respectively A and B pressure chambers. The vane wheel can be mechanically coupled to the drive wheel by a locking element, which is displaceable by a spring element into a locking position within a seat in one of the sidewalls of the drive wheel, and is hydraulically moved into an unlocked position in the vane wheel upon application of pressure to the pressure chambers. The locking element is a generally uniform cylindrical locking pin, and is arranged in an axial bore in the hub of the vane wheel. The longitudinal axis of the axial bore has a smallest possible distance from the longitudinal mid-axis of the device.

Abstract: A hydraulic system (1) for a switchable valve drive element (10) of an internal combustion engine (33) is provided and includes a throttled connection (13) created from a second channel (9), used to actuate a hydraulic play-compensation element (11) using hydraulic fluid, directly to an external radial side (12) of a coupling element (8). The coupling element (8) is supplied by a first channel (7) with the switching hydraulic pressure. These measures make it possible to keep the first channel (7) as free as possible of undesired air.

Abstract: An electromagnetic regulating device with a movable actuator (42), especially a piston, having an engagement region (44) on an end thereof, and a coil device (34, 36), which is stationary relative to the actuator and which is designed to exert a force on the actuator. The electromagnetic regulating device is provided with permanent magnet means, through which the actuator (42) is held to the coil device (34, 36) in the inactive state of the coil device (34, 36) and wherein when current is applied to the coil device (34, 36), the actuator (42) is released from the coil device (34, 36), overcoming a retaining force of the permanent magnet means.

Abstract: A linear rolling bearing comprises a guide carriage (1) that can be mounted on a guide rail (2) through rolling elements (5). The guide carriage (1) comprises at least one endless rolling element channel (3) for the rolling elements (5). The rolling element channel (3) comprises a load-bearing channel (4) for load-bearing rolling elements (5), a return channel (6) for returning rolling elements (5) and deflecting channels (7) arranged at both ends of the load-bearing channel (4) and the return channel (6), which deflecting channels (7) connect the load-bearing channel (4) and the return channel (6) endlessly to each other and deflect the rolling elements (5) out of the return channel (6) into the load-bearing channel (4), and vice versa. The rolling elements (5) are received in pockets (8) of a cage strip (9) having at least two free ends (13, 14).

Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.

Abstract: An electromagnet having a hollow cylindrical coil former fitted with a coil winding and surrounded by a magnet housing. The coil former is bounded by upper and lower pole shoes. A nonmagnetic metal tube in the hollow cylinder of the magnet defines an armature space for a magnet armature that divides the armature space into first and second chambers, which are connected via a pressure equalizing channel in the magnet armature. A push rod passes through an axial hole in the lower pole shoe, to a control piston of a hydraulic valve, whose interior is connected via a further pressure equalizing channel in the lower pole shoe to the first chamber of the armature space. The push rod is a profiled rod contacting the magnet armature, the rod is of a cross-sectional shape different than that of the axial hole in the lower pole shoe and of a cross-sectional area less than that of the axial hole.

Abstract: Subassembly of at least two machine parts, the outer machine part, in particular a tensioning roller with a running disk made of steel being fastened with its internal circumferential surface on an external circumferential surface of the inner machine part a raceway ring of a rolling bearing, by means of compression connection, wherein the overlap of the internal diameter of the outer machine part, in particular the running disk, and of the external diameter of the inner machine part, in particular raceway ring, and the dimensions of the machine parts and their materials are selected such that the outer machine part, in particular the running disk, is deformed into the plastic range of material strain.

Abstract: An internal combustion engine having a valve train that includes a switchable cam follower is provided. The cam follower (20) has a generally cylindrical shape and can move longitudinally in a receptacle (21) of the engine (22), and is acted upon at one axial end by a cam (23) of a camshaft and at the other axial end indirectly or directly by a gas exchange valve of the valve train. A main oil gallery (24) is arranged in the internal combustion engine (22) for introducing hydraulic medium to a valve lash adjustment element arranged in the cam follower (20).

Abstract: A shifting arm for transmitting shifting movements is a formed part which is formed without cutting from a thin sheet. It includes a mouth recess in from an edge of the sheet, and stop faces are formed along the edges of the recess and out of the plane of the sheet.

Abstract: A bevel-pinion shaft (5) of a differential of a motor vehicle is supported in a housing (1) by two spaced unilaterally loadable double-row tandem angular-contact ball bearings (16,17) which face each other in an O-arrangement. Compared to the classical support by conical-roller bearings, a substantially lower frictional moment and substantially lower bearing wear are attained by the bearing arrangement of the present invention.

Abstract: In a valve drive for an internal combustion engine, an elongated securing device or anti-rotation bridge referred to as a mounting aid has receptacle spaces, arranged at intervals one behind the other, for receiving respective valve tappets. Each valve tappet can be displaced longitudinally in its receptacle space. The tappet is secured against rotation by two parallel planar keying faces formed on its outer surface which bear against corresponding inner surfaces in a receptacle space of the mounting aid. The mounting aid has receptacle spaces with a relatively small interval dimension between the two inner surfaces for bearing against the keying faces of standard roller tappets and has receptacle spaces with a relatively large interval dimension between the two inner surfaces for bearing against the keying faces of switchable roller tappets.

Abstract: In an internal combustion engine with two camshafts arranged next to one another and each mounted in a radial bearing in the cylinder head and hydraulic device for rotary angle adjustment of each camshaft with respect to a crankshaft. The supply and discharge of hydraulic pressure medium to and from the devices are controlled separately in each case by an electromagnetic hydraulic valve comprised of an electromagnet and of a valve housing capable of being plugged into a valve receptacle. Each valve housing on its circumference has a plurality of annular grooves with a plurality of radial orifices and on its free end face has a further orifice, via which the hydraulic valves are fluidically connected to the radial bearings of the camshafts and to a pressure connection and to a tank connection. Valve receptacles are passage bores which are fluidically connected via horizontal transverse ducts to the radial bearings of the camshafts and to the pressure connection.

Abstract: A radial bearing disposed between transmission parts moving in opposition to one another at different speed, includes an inner sleeve for attachment to one transmission part and an outer sleeve; for attachment to another transmission part. Disposed between the inner sleeve and the outer sleeve is a plurality of rolling bodies. At least one of the inner sleeve and the outer sleeve is provided with a coating which contains ZnNi or ZNFe and is applied galvanically onto the inner sleeve and/or outer sleeve before attachment to the respective transmission part.

Abstract: The invention concerns a rotary piston adjuster for adjusting the angular position of the camshaft of an internal combustion engine, said adjuster comprising an outer rotor having at least one hydraulic chamber, and an inner rotor comprising at least one pivoting vane that can pivot hydraulically in the hydraulic chamber between a retard stop position and an advance stop position. A locking device suitable for detachably connecting the outer and inner rotors to each other and at least one compression spring acting in opposition to the frictional torque of the camshaft are arranged between the two rotors. A liberal design of the compression spring and a low-wear operation with this spring are enabled by the fact that the compression spring (27, 27′) is arranged in an attachment (4) that is connected to the rotary piston adjuster, and the components of the attachment have a wear-resistant configuration and support the compression spring (27, 27′) at least pointwise over its entire length.

Abstract: In an eccentric bearing arrangement for a pump shaft (2) comprising an eccentric ring (4) that is fixedly attached thereto, and further comprising a needle roller bearing that is arranged on an outer peripheral surface of the eccentric ring, a stop washer (12) is retained in a circumferential groove (13) of the needle roller bushing (9) and is surrounded radially by the adjoining flange (11) of the needle roller bushing (9), and the stop washer (12) comprises an axially inward open annular groove (15) in which the cage (6) is guided.