Abstract: A friction pad includes a fastening surface, a friction surface facing away from the fastening surface, a shape delimited by a peripheral cutting edge, and a base rim extending along the peripheral cutting edge. The base rim is more compressed than a remainder of the friction pad. The reminder of the friction pad has a pad height and the base rim may have a base height that is at least one quarter of the pad height. The base rim may have a base width that is at least as large as the pad height.

Abstract: A rotor of an electric rotation machine includes a shaft, a laminated core arranged coaxially on the shaft and configured to receive magnets or an electrical conductor, and a torque transmission element non-rotatably connected to a shank of the shaft. The laminated core includes a rotor end plate on an axial side thereof. The torque transmission element has a higher strength than the rotor end plate. The rotor end plate is connected to the torque transmission element via a pin extending into a through-hole and forming a frictional connection with a wall of the through-hole. One of the rotor end plate and the torque transmission element includes the pin, and the other of the rotor end plate and the transmission element includes the through-hole. The pin is formed via pressing into material of the one of the rotor end plate and the torque transmission element.

Abstract: An electric machine comprises a stator, a rotor and an air gap between the stator and the rotor. The stator includes a stator member, a stator winding, an insulating coating between the stator winding and the stator member to provide electric insulation between the stator winding and the stator member, and a local depression in the stator member. The insulating coating is disposed in the local depression. The local depression is located on a side of the stator member facing the air gap.

Abstract: An electrical machine having a rotor mounted rotatably relative to a stator, the rotor has a rotor shaft with a rotor body mounted thereon for rotation and displacement therewith. The stator has a stator body with a first stator winding arranged within a first hydraulic space, within which the first stator winding can be contacted at least in sections by a hydraulic fluid. An electrical conductor of the first stator winding emerges in the axial direction from the first stator body and reaches through a partition, and a leadthrough element is arranged in the partition, with the electrical conductor (reaching through the leadthrough element to form a hydraulic barrier between the hydraulic fluid on the side of the partition facing the stator body and the hydraulic fluid on the side of the partition facing away from the stator body.

Abstract: A stator of a dynamoelectric rotary machine includes a stator body which has substantially axially extending slots, a stator winding, the conductors of which are located in the slots and spacers for positioning the conductors in the slots such that a cavity for the passage of a cooling medium that is continuous over the entire axial length of the slot, remains between the slot walls and the conductors. The stator body is a laminated core having stator sheets stacked axially on top of one another and intermediate sheets that act as spacers located between the stator sheets, the intermediate sheets being axially spaced apart from one another over a plurality of stator sheets and having retainers for retaining and positioning the conductors such that, between each pair of intermediate sheets, the conductors are positioned spaced apart from the walls of the slot in a free-floating manner.

Abstract: An electric machine, in particular an axial flux machine, including a rotor mounted in a dry chamber rotatable relative to a stator, the rotor having a rotor shaft with at least one first disk-shaped rotor member which is non-slidably arranged on the rotor shaft for conjoint rotation therewith, the stator having a first annular disk-shaped stator member and a second annular disk-shaped stator member which are arranged coaxially to one another and coaxially to the rotor shaft and are axially spaced apart from one another, the rotor being arranged in the space therebetween.

Abstract: A hydraulic arrangement for an electrically operable, multigear axle drive train of a motor vehicle comprises a hydraulic circuit in which a hydraulic fluid is guided, a hydraulic pump arranged to apply pressure to the hydraulic fluid within the hydraulic circuit, a first hydraulic path arranged to connect a first clutch device to the hydraulic circuit, and a second hydraulic path arranged to connect a second clutch device to the hydraulic circuit. The first and second clutch devices are each arranged to actuate a gear selection device of the electrically operable axle drive train.

Abstract: A catalytic arrangement for an electrolyzer system or a fuel cell system includes a catalyst support unit and a catalyst layer, wherein the catalyst layer has a carbon matrix with a metal, non-metal and/or metalloid doping.

Abstract: A method for producing a threaded nut of a threaded drive, includes the following steps: a sleeve is produced from a steel sheet which is suitable for case-hardening; a rolling profile for a rolling contact with rolling bodies is molded on the inner circumference of the sleeve, said rolling profile being wound in a helical manner about the longitudinal axis of the sleeve; a flange is welded to the end face of the sleeve; the flange is provided with a welding surface on the flange end face facing away from the sleeve for welding to a machine part; the welding surface initially has a diffusion-inhibiting layer which inhibits the penetration of carbon; and the welding surface is exposed by removing the diffusion-inhibiting layer after case-hardening the threaded nut. A threaded nut produced according to the method can be part of a ball screw drive, the flange of which can be welded to a provided machine part by the user.

Abstract: A method of forming a bearing ring having improved hardness is disclosed herein. The method generally includes a duplex hardening process in which the bearing ring is first subjected to a heat treatment. After the heat treatment process, the bearing ring undergoes a nitriding treatment in predetermined portions, including at least a raceway and a cage pilot surface.

Abstract: A rolling bearing apparatus includes a rolling bearing, a seal, first and second machine elements and a bypass apparatus. The rolling bearing includes a concentrically arranged first bearing ring and second bearing ring, and rolling elements arranged radially between the first bearing ring and the second bearing ring. The seal is arranged radially between the first bearing ring and the second bearing ring, and the second bearing ring is installed in the first machine element. The bypass apparatus forms an electrical connection between the first machine element and the second machine element. The bypass apparatus includes an electrically conductive bypass line and a holder connected to the electrically conductive bypass line in an electrically conductive manner. The holder is fastened to the second bearing ring radially between the second bearing ring and the first machine element.

Abstract: A blocking device for the recirculation loop in a fuel cell stack comprises a hydrogen inlet, a recirculation gas inlet, and a purge line. In order to dispense with the need for some valves, a recirculation loop blocking valve is provided which is switched by an upstream hydrogen switching valve, and a purge valve is integrated which is also configured as a pressure relief valve.

Abstract: The invention relates to a friction part (15) for a frictionally working device, having friction lining elements (31-33) which are arranged with slots (34, 35) between one another so as to form a friction surface (16) in the form of a circular disk, which slots can be traversed from radially inside to radially outside, in the radial direction with respect to the friction surface (16), by a coolant and/or lubricant, in which context drag losses arise and air is drawn in with the coolant and/or lubricant. In order to functionally improve the friction part (16), the conformation of the friction lining elements (31-33) and the arrangement of the friction lining elements (31-33) relative to one another are optimized while taking into account interdependencies between the drawing-in of air and a separation behaviour of the frictionally working device with respect to the drag losses.

Abstract: A cage assembly for a bearing includes a first cage half and a second cage half. The first cage half includes a first annular section with a first plurality of circumferentially spaced apertures for receiving a plurality of rolling elements, and a first cylindrical section arranged for positioning the cage assembly on a first shaft. The second cage half includes a second annular section with a second plurality of circumferentially spaced apertures for receiving the plurality of rolling elements, and a second cylindrical section arranged for positioning the cage assembly on a second shaft. In an example embodiment, the first cylindrical section or the second cylindrical section has an aperture for radial flow of a lubricant.

Abstract: An insulated bearing includes an outer ring, a plurality of rolling elements, and an insulating cap. The outer ring has an inner rolling surface and an outer spiral groove, the rolling elements are in rolling contact with the inner rolling surface, and the insulating cap is screwed onto the outer ring. The insulating cap has an inner spiral, complementary to the outer spiral groove. In an example embodiment, the outer spiral groove comprises a cross-section having a shape selected from the group consisting of a rectangle, a triangle, and a trapezoid. In an example embodiment, the outer spiral groove has between 2 and 4 revolutions. In an example embodiment, the outer spiral groove has a width of 4 millimeters or less.

Abstract: A radial foil bearing operable in a single rotational direction includes an outer ring and a plurality of foil packs. Each foil pack has a top foil and a corrugated foil arranged radially between the outer ring and the top foil. Each top foil has a first end fixed to the outer ring and a second end, opposite the first end, that is freely movable and overlaps a circumferentially adjacent top foil. A predetermined angular range of the second end is arranged to contact a shaft.

Abstract: A central release mechanism, in particular for a hydraulic release system of a clutch system of a motor vehicle, including a central release mechanism housing with an annular central release mechanism piston chamber in which a central release mechanism piston is received axially movably by a hydraulic liquid that can be supplied to the central release mechanism piston chamber. The central release mechanism has at least one central release mechanism piston seal which seals the central release mechanism piston with respect to the central release mechanism piston chamber, and the central release mechanism piston seal is arranged in the central release mechanism housing so as to be axially secured at least on one side by a securing ring, the securing ring being connectable to the central release mechanism housing by means of a bayonet connection.

Abstract: A radial foil bearing includes a base foil, a first top foil, a first corrugated foil, a second top foil and a second corrugated foil. The first corrugated foil is arranged radially on top of the first top foil and fixed to the first top foil to form a first curved segment fixed to the base foil and extending in a circumferential direction. The second corrugated foil is arranged radially on top of the second top foil and fixed to the second top foil to form a second curved segment fixed to the base foil and extending in the circumferential direction. The second curved segment is placed after the first curved segment on the base foil so that, when the base foil is rolled up, the first curved segment and the second curved segment form at least a portion of a tubular base.

Abstract: A hybrid system and a vehicle, the hybrid system comprising an engine, an electric motor, a dual clutch, and a transmission provided with two synchromesh mechanisms and two input shafts. The engine being selectively in transmission connection to one of connection to the other of the input shafts via the other clutch unit of the dual clutch.

Abstract: A torsional vibration damper includes a rotational axis, an input part mounted about the rotational axis, an output part rotatable about the rotational axis to a limited extent relative to the input part; a spring device opposing rotation of the output part relative to the input part, a first cam mechanism, and a first intermediate element. The first intermediate element is arranged for radial displacement by the first cam mechanism when the output part rotates relative to the input part. The first intermediate element has a first intermediate element first part, and a first intermediate element second part. In an example embodiment, the damper includes a second cam mechanism and a second intermediate element arranged to be radially displaced by the second cam mechanism when the output part rotates relative to the input part. The spring device is arranged between the first intermediate element and the second intermediate element.