A method for manufacturing a brake disc includes providing at least one sheet of predefined thickness, blanking a first disc-shaped portion in the at least one sheet adapted to make a first plate of a ventilated braking band, blanking a second disc-shaped portion in the at least one sheet adapted to make a second plate of the ventilated braking band, blanking a third portion in the at least one sheet adapted to make at least one ventilation spacer for the ventilated braking band, drawing the third portion by shaping first and second protrusions, forming opposite first and second recesses adapted to make ventilation channels, connecting the first disc-shaped portion to the first protrusion by discontinuous weld spots, and connecting the second disc-shaped portion to the second protrusion by discontinuous weld spots.

The claimed invention is directed to a novel composite half shaft. More specifically, the claimed invention provides for the integration of a continuous velocity joint within the hollow tubular portion of the axle shaft, which permits for a longer lightweight composite hollow shaft. The use of the lightweight material over additional length results in an overall weight reduction. Additional benefits include reduced unsprung weight in vehicles, improved mileage for gas powered vehicles and increased range for electric vehicles. The use of composite materials in place of a solid or hollow metal axle bar results in improved noise, vibration and harshness (“NVH”) characteristics over conventional half shafts..

A method for manufacturing a rotationally symmetrical shaped article, which has a cylindrical, concentric hub axially closed on one side, in a shaping process is performed such that at least one pressure roll is in contact with a rotating, closed, planar circular blank sheet and presses the material of the blank radially from the outside inward against a projecting part that runs upright on the circular blank such that the thickness of the circular blank decreases and the hub including a blind hole is formed.

A balance module 10 for a clutch comprises a first annular piston part 11, a second annular piston part 12, which is arranged opposite the first piston part 11 in the axial direction and spaced therefrom, at least three spring elements 13 operating in the axial direction, which are arranged axially between the first 11 and the second piston part 12, and a sealing element 14 with at least one radially outwardly directed sealing lip 15, which is attached on the first piston part 11. The spring elements 13, the first 11 and the second piston part 12 are connected to one another in a loss-proof manner, in order to form an integral module 10.

A method makes brake discs of fiber-reinforced materials. Each brake disc includes a braking band having a predefined thickness. At least one fiber layer having a predefined width is formed and wound around the mandrel to form a coaxially hollow cylindrical body having an outer diameter and an inner diameter substantially equivalent to the mandrel diameter. The fiber layer is wound around the mandrel in a winding direction substantially parallel to the direction of the layer length. The semi-finished cylindrical body is cut in slices transversally to the longitudinal axis of the cylindrical body in predefined thicknesses. Each slice is a disc-shaped body defining the braking band of a brake disc. The cylindrical body is needled according to a substantially radial direction to orient part of the fibers according to this direction by arranging the fibers in connection between adjacent coils of the fiber layer wound around the mandrel.

A brake rotor has a circumferential brake track disposed about an axis of rotation of the brake rotor. The rotor has an outer peripheral edge circumferentially around the brake rotor. The rotor has two surfaces that face axially outward away from one another and that are on axially opposed sides of the brake rotor. The two surfaces define a thickness therebetween. The rotor has an edge surface facing radially outward on the outer peripheral edge. The rotor has a transition between each of the two surfaces and the edge surface. At least a portion of the edge surface is not perpendicular to the two surfaces in an axial direction.

A sliding sleeve for a synchronous manual transmission assembly is produced by the following steps: a tubular blank is provided in which an internal toothing arrangement is present, and the blank which is provided with the internal toothing arrangement is further processed to form a plurality of sliding sleeves.

A brake disc having a friction ring and a hub produced as a separate element and arranged inside the friction ring according. Recesses are configured in the friction ring on the inside to connect the hub to the friction ring and corresponding projections are formed on the hub, which projections engage in the recesses of the friction ring in order to be able to transfer torque from the friction ring to the hub. The recesses have an undercut at least partially in a radial direction, as viewed looking inward from the outside. The disc is simple and cost-effective to manufacture and has an acoustically advantageous operating performance, in particular in the case of thermal expansion.

A friction material composition that does not contain copper, which has a high environmental load, or containing copper in such small amount as to be not more than 0.5 mass % and that enables decrease in brake vibration in braking at high temperatures when used in a friction material such that for an automobile disc brake pad, is provided. A friction material obtained by molding the friction material composition is also provided. The friction material composition contains a binder, an organic filler, an inorganic filler, and a fibrous base material, and the friction material composition contains no copper as an element or contains not more than 0.5 mass % of copper, and also contains 2 to 5 mass % of steel fibers that have fiber lengths of 2500 μm or less.

The present invention relates to a plate carrying device (2) having a plate carrier (4), which has a tubular section (24), and a supporting ring (6), which surrounds the tubular section (24) and on which the tubular section (24) can be supported or is supported outwardly in a radial direction (12). The cross section of the supporting ring (6) has at least one radial leg (30; 38) extending substantially in a radial direction (12, 14). The present invention furthermore relates to a multiplate clutch or brake having a plate carrying device (2) of this kind and to a simplified method for producing the plate carrying device (2).