Abstract: A method without a calibration step produces a camshaft adjuster including a stator, a rotor rotatable relative thereto and a control valve, wherein the rotor and/or the stator is or are produced according to a powder-metallurgical process, wherein the stator in the region of a fitting surface for contacting the camshaft and/or the rotor in the region of a fitting surface for contacting the camshaft and/or in the region of a fitting surface for contacting the control valve and/or the control valve in the region of a sealing surface is or are produced having a tolerance so that a clearance fit with a maximum clearance of 100 ?m is formed between the fitting surface for the camshaft and the camshaft and/or between the fitting surface for contacting the sealing surface of the control valve and the sealing surface of the control valve.

Abstract: A method for connecting a first component to a second component to form an assembly forms a press fit connection between the first component and the second component, for which purpose the second component is produced having an annular component section. A recess is formed, in which the first component is at least partially arranged. At least the annular component section of the second component is produced as a sintered component and has net shape or near net shape quality at least in the region of the recess.

Abstract: A camshaft adjuster is produced that includes a stator and a rotor, which is rotatable relative to the stator, wherein the stator and the rotor are produced with first planar surfaces on a first end face and with second planar surfaces on a second end face, which is formed to be opposite the first end face when viewed in an axial direction and wherein the rotor and/or the stator is or are produced according to a powder-metallurgical method, The first planar surfaces and the second planar surfaces of the stator and the rotor are ground or finished, and the lateral surface of the stator and the lateral surface of the rotor are left uncalibrated.

Abstract: According to a method for the surface compaction and calibration of a sintered component, the sintered component runs along an axis through a plurality of die sections of a die, the inner diameter of which decreases in pressing direction and wherein the individual die sections are arranged such that a following die section of the plurality of die sections directly adjoins the corresponding die section which precedes it in pressing direction, and after the surface compaction at the last die section with decreasing inner diameter there is a relaxation of the sintered component in a relief section directly adjoining the last die section, which relief section has a greater diameter than the immediately preceding last die section of the die section with a decreasing inner diameter. The sintered component is calibrated in the relief section, whereby the inner contour of the relief section corresponds with the intended contour with the nominal dimensions of the sintered component.

Abstract: The invention relates to a method for producing a sintered gear comprising a gear body on which at least one elastomer element is arranged, according to which a green compact is produced by pressing a powder, the green compact is sintered into a gear body and is hardened by carburization and subsequent quenching or sinter-hardening and subsequent quenching with a gas and afterwards the at least one elastomer element is vulcanized onto the gear body.

Abstract: A bearing cover for a split bearing arrangement includes a stiffening element between threaded bores for receiving threaded bolts in order to connect the bearing cover to a bearing block. Provided between two clamping surfaces is a first radially inner bearing support surface having an at least approximately arcuate cross-section as viewed in the axial direction. Adjoining the bearing support surface and following the cross-sectional contour of the bearing support surface, a reinforcing web is provided on the stiffening element which has a varying height as viewed perpendicular to the bearing support surface, and the tallest height is disposed in the region of the half angular span of the bearing support surface.

Abstract: The invention relates to a bearing arrangement (1) comprising a bearing cover (3) and a bearing block (2) fitting onto the latter, which bearing block in the area of the bearing cover (3) comprises a recess (9) in which the bearing cover (3) can be arranged and which comprises vertical deformation elements (15) with a longitudinal extension (19), wherein the vertical deformation elements (15) have a greater degree of plastic deformability than the bearing block (2).

Abstract: A gear arrangement with a divided spur toothing includes a main gear and a gear rotatable to the latter in a circumferential direction. The main gear has a hub on which the rotatable gear is arranged. A spring element is arranged between the main gear and the rotatable gear. With the spring element, the rotatable gear is pretensioned in the circumferential direction against the main gear. A first spur toothing part of the spur toothing is formed on the main gear and a second spur toothing part of the spur toothing is formed on the rotatable gear. The first spur toothing part has a first axis of rotation and the second spur toothing part has a second axis of rotation. The second axis of rotation of the second spur toothing part is offset relative to the first axis of rotation of the first spur toothing part.

Abstract: The invention relates to a bearing cover (3) for a split bearing arrangement (1) which comprises a bearing block (2) in addition to the bearing cover (3), and the bearing cover (3) has clamping surfaces (4) which lie against co-operating clamping surfaces (5) of the bearing block (2) when the bearing arrangement (1) is in the assembled state, and a first radially inner bearing support surface (12) having an at least approximately curved cross-section as viewed in the axial direction is provided between the two clamping surfaces (4). An additional surface (15) is provided between at least one of the clamping surfaces (4) and the first radially inner bearing support surface (12) which directly adjoins the first radially inner bearing support surface (12) and clamping surface (4) and which is disposed at an obtuse angle (16) to the first radially inner bearing support surface (12) and at an acute angle (17) to the clamping surface (5).

Abstract: The invention relates to a split bearing arrangement (1) with a bearing block (2) comprising counter clamping surfaces (5) and a bearing cover (3) comprising clamping surfaces (4), wherein the bearing cover (2) is connected to the bearing block (3) by means of bolt-like connecting elements mounted in bores (8) in the clamping surfaces (4) and/or comprising at least one projection (13) per clamping surface (4), which can be pushed into the counter clamping surface (5) of the bearing block (2), wherein the clamping surfaces (4) of the bearing cover (2) or the counter clamping surfaces (5) of the bearing block (2) are oriented obliquely at an angle not equal to 90° to the longitudinal extension of the connecting elements and/or the projections (13) are arranged respectively at a distance (16) of at least 150% of a maximum height (17) of the projections (19) over the clamping surfaces (4) from the bore (8) and/or a side wall of the bearing cover (3).

Abstract: The invention relates to a gear assembly (12) comprising a fixed gear (13) having a first radial toothing (16) and an idler (14) having a second radial toothing (17), the first radial toothing (16) being disposed at least approximately at the same radial height as the second radial toothing (17), and the fixed gear (13) further comprises a first axial end face (18) and the idler (14) comprises a second axial end face (19), and the fixed gear (13) is connected to the idler (14) by means of at least one elastic connecting element (21), for which purpose the elastic connecting element (21) is connected on the one hand to the first axial end face (18) of the fixed gear (13) and on the other hand to the second axial end face (19) of the idler (14).

Abstract: A bearing arrangement includes a bearing cover and a bearing block fitting thereon. The bearing block has a recess in the area of the arrangement of the bearing cover, in which the bearing cover can be arranged. The bearing cover has vertically running positioning elements. The bearing cover can be positioned on the bearing block via the vertically running positioning elements.

Abstract: A gear is described for a spur gear stage without play having a hub (1) and a sprocket (2), which is divided along its axis-normal division plane into two partial sprockets, namely into a hub-fixed sprocket part (3) and a sprocket ring (4) which is mounted so it is coaxially rotatable in relation thereto, and which forms springs (6) sectionally enclosing the hub (1) in the circumferential direction, which are integrally connected at their bases (11) to the sprocket ring (4) and which are supported with their free ends (7) protruding toward the hub (1) on stops (8) of the hub (1).

Abstract: The invention relates to a gearwheel arrangement (1) with a main gearwheel (2) and a gearwheel (4) rotatable relative to the latter in circumferential direction (3), wherein the main gearwheel (2) comprises a hub (5) on which the rotatable gearwheel (4) is arranged, and with a spring element (7), which is arranged between the main gearwheel (2) and the rotatable gearwheel (4), and by means of which the rotatable gearwheel (4) is pretensioned in circumferential direction (3) against the main gearwheel (2), wherein the main gearwheel (2) comprises at least one first support element (22) and the rotatable gearwheel (4) comprises at least one second support element (23), and wherein the spring element (7) is arranged between the first and the second support element (22, 23) and thereby spaced apart from the first surface (19) of the main gearwheel (2) and from the second surface (21) of the rotatable gearwheel (4).

Abstract: A gear arrangement has a split spur gear toothing, including a main gear and a gear rotatable relative to it in the circumferential direction, and the main gear has a hub on which the rotatable gear is mounted, and a spring element is disposed between the main gear and the rotatable gear and biases the rotatable gear in the circumferential direction towards the main gear, and a first spur gear toothing part is provided on the main gear and a second spur gear toothing part is provided on the rotatable gear. The rotatable gear is guided by at least one at least approximately annular guide web in the region of the spur gear toothing.

Abstract: The invention relates to a toothed wheel arrangement (1) comprising a main toothed wheel (2) and a toothed wheel (4) that can be rotated relative thereto in the circumferential direction (3), wherein the main toothed wheel (2) comprises a toothed wheel body (25) on which a hub (5) is arranged in a projecting manner in the axial direction so as, firstly, to accommodate a shaft and, secondly, to arrange the rotatable toothed wheel (4) thereon, for which purpose the rotatable toothed wheel (4) has a cutout (17) coaxial to an axially extending center axis of the main toothed wheel (2), and wherein the main toothed wheel (2) is connected to the rotatable toothed wheel (4) by means of a bayonet fastening (14). The bayonet fastening (14) is formed between the hub (5) and the rotatable toothed wheel (2) and/or between the hub (5) and a spring element (9) bearing on the rotatable toothed wheel (4).

Abstract: A gear transmission stage is described, consisting of two intermeshing gears hardened by heat treatment. In order to improve the noise behaviour, it is proposed that one of the two gears has a final form determined by hard fine machining and the other gear has a form which is determined by heat treatment and is close to finished contours.

Abstract: The invention relates to a method for the production of a one-piece, metal multiple wheel (2) for a traction mechanism comprising at least two adjacently disposed single wheels (3, 4), each comprising a wheel body (5, 6) having an outer circumference (7, 8), wherein teeth (9, 10) for engaging the traction mechanism are arranged in a distributed manner over the outer circumference (7, 8), and wherein at least one of the two single wheels (3, 4) is configured as a sprocket, gear or toothed belt wheel.

Abstract: A gear is described for a spur gear stage without play having a hub (1) and a sprocket (2), which is divided along its axis-normal division plane into two partial sprockets, namely into a hub-fixed sprocket part (3) and a sprocket ring (4) which is mounted so it is coaxially rotatable in relation thereto, and which forms springs (6) sectionally enclosing the hub (1) in the circumferential direction, which are integrally connected at their bases (11) to the sprocket ring (4) and which are supported with their free ends (7) protruding toward the hub (1) on stops (8) of the hub (1).

Abstract: The invention relates to a bearing cover (3) for a split bearing arrangement (1) which, in addition to the bearing cover (3), comprises a bearing block (2), and the bearing cover (3) has a clamping surface (5) which lies against a co-operating clamping surface (6) of the bearing block (2) when the bearing arrangement (1) is in the assembled state, and at least one projection (7) is provided on the clamping surface (5) and protruding out from it which can be pushed into the co-operating clamping surface (6) of the bearing block (2). The at least one projection (7) has a cross-section (9) which varies across its extension on the clamping surface (5) and/or is of a conical or frustoconical or pyramid or truncated pyramid shape.