The invention relates to a friction device (1) comprising a cage-like support element (2), wherein the support element (2) comprises a cage casing which is formed from a plurality of a disks (4) which are arranged consecutively in axial direction (5), comprise an annular main disk body (6) and which each have on their outer periphery (7) or inner periphery (14) a plurality of torque transmission elements (8), wherein gaps (10) are formed respectively between the torque transmission elements (8) in peripheral direction (9) of the disks (4), and the torque transmission elements (8) of the respectively adjacent disk (4) engage in the gaps (10) of the disks (4).

The invention relates to a cold-formed steel brake piston 1 for a motor vehicle partial-pad disc brake brake pad with a thin-walled structure as a cup open at one end and comprising a base 2 and a wall 3 with a radially outwardly impressed groove 6 in the wall 3 and with a radially inwardly impressed wall projection 7.

The invention has the object of providing a further improved stable steel brake piston construction with an improved interface which can be used flexibly and cost-effectively for both large-bore and small-bore steel brake pistons 1.

This object is accomplished by making the wall 3 with at least one groove 14 and at least one land 15 at a distance from wall projection 7 profiled in such a way that wall 3 has wall surface areas of varying thickness which are spaced apart from each other in the circumferential direction with a spacing V.

The present invention relates to a disc brake caliper body comprising a mounting side bracket and a non-mounting side bracket extending along a circumferential direction of the body, each bracket being configured to hold at least one brake pad. In order to provide improved cooling efficiency while maintaining the required stability of the brake caliper, the caliper body further comprises at least one cooling duct formed by additive manufacturing, at least one cooling duct being an integral part of the caliper body.

The brake disc includes two first members and at least one second member. Each of the first members has a sliding surface, and has almost a disc shape or an almost annular plate shape. The second member has a plurality of fins and a fin holding part. Each of the two first members and the at least one second member is manufactured by pressing. The brake disc is manufactured as the two first members and the at least one second member manufactured by pressing are joined to each other.

A new iron-based powder containing a plurality of composite particles composed of a ferritic iron or iron-based porous 5 structural particles having at least one particulate friction modifier distributed in the pores and cavities of the structural particles and further containing at least one particulate stabilizer-sealer. The composite particle is especially suited to be used as a functional material in friction formulations such as brake pads and enable replacement of copper or copper-based materials used in such friction 10 material formulations.

A brake pad assembly having a consolidated lining comprised of an enhancement framework disposed within a tribological lining, the enhancement framework and tribological lining having substantially the same compressibility factor. The enhancement framework or tribological lining may advantageously be manufactured using an additive manufacturing technique.

The invention relates to a method for machining the interior of a brake caliper (1) of a disc brake, on which are formed: a first saddle portion to the one side of the brake disc of the disc brake, a second saddle portion to the other side of the brake disc, and a bridge section connecting the saddle portions and providing a free space for at least a part of the brake disc. At least one of the saddle portions is provided with a hollow space (7) for receiving a brake application device, wherein said hollow space comprises a mounting opening (4) towards the free space and extends in the opposite direction until a saddle rear wall (18). At least one support surface for the forces acting during the brake application is formed on the inner side of the saddle rear wall. The machining of the support surface (20) is carried out from the direction of the free space and, for this purpose, a tool (55) is brought from outside of the brake caliper (1) into the hollow space. In order to provide a method for machining the interior of a brake caliper of a disc brake, which allows a high-precision machining of the support surfaces inside the brake caliper even in the case of the narrow space conditions which are typical for the machining of a single-piece brake caliper, the tool (55) is guided into the cavity through another opening (25) than the mounting opening (4).

In order to provide a development of friction ring elements for a friction ring set for arranging on the wheel web of a track wheel in order to form a track wheel brake, wherein the friction ring elements can be simply and cost-effectively produced and can be easily fitted with linking elements, a friction ring element (10) is proposed for a friction ring set (200) for arranging on the wheel web (2) of a track wheel (1) for a railway vehicle in order to form a track wheel brake (100), wherein the friction ring element (10) has a friction ring (11) and multiple linking elements (12, 13) designed as separate components and arranged on the friction ring (11), and wherein at least some of the linking elements (12, 13) are force-lockingly connected to the friction ring (11).

The present disclosure relates to a hybrid lightweight brake disk and a method for producing the hybrid lightweight brake disk. The hybrid lightweight brake disk includes a brake chamber and a friction ring with at least one circular, outer friction surface. The method provides a brake chamber that includes a material containing an aluminum-forged alloy and a friction ring having a rapidly solidified aluminum alloy built up on an edge region of the brake chamber by using a laser deposition welding process or a 3D-printing process.

A water entanglement system having a first rotatable surface comprises a first water jet which may be configured to water-entangle a preform in situ. The water-entanglement system may comprise a second rotatable surface disposed proximate the first rotatable surface. The second rotatable surface may comprise a second water jet configured to water-entangle the preform in situ. The first rotatable surface may be oriented substantially parallel to the second rotatable surface.