The present invention relates to a disk (2) for a disk clutch or brake (4) comprising a first friction surface (28) and a second friction surface (34) facing away from the first friction surface (28), in which recesses and/or grooves (40, 42, 44) are provided. A first type of recesses and/or grooves (40), which is generated by a material shaping and/or a material casting and/or a non-material removing first manufacturing method, is provided in the first friction surface (28), and a second type of recesses and/or grooves (42), which is generated by a material removing second manufacturing method, is provided in the second friction surface (34). In addition, the present invention relates to a disk clutch and brake (4) comprising such a disk (2) and a method for producing such a disk (2).

A brake carrier and a method of manufacture. The brake carrier may have leading and trailing brake pad abutments. The leading brake pad abutment may have an unmachined leading wall surface and an unmachined leading floor surface. The trailing brake pad abutment may have a trailing wall surface and a trailing floor surface, at least one of which may be machined.

An inner disc carrier (LT) for a wet-type friction clutch (K0) may have a driving toothing including ridges (S, SX) and grooves (N) for the form-locking accommodation of discs (L) of the friction clutch (K0). Each of a first group of the ridges (S) has a first opening (A1) produced in a chip-less shaping process and a section (ST) extending radially inwardly at the first opening (A1) and created during production of the first opening (A1). Hydraulic fluid supplied radially from inside the inner disc carrier (LT) from a first axial position is guided through the first openings (A1) to the discs (L). Hydraulic fluid supplied radially from inside the inner disk carrier (LT) from a second axial position is guided past the discs (L). The sections (ST) of the ridges (S) act as a damming contour for hydraulic fluid supplied radially from the second axial position.

Disclosed are a brake disk and a method for manufacturing the same. In particular, the brake disk may include a friction surface formed of cast iron, and the friction surface of the brake disk is divided into a plurality of sections in a circumferential direction. Preferably, an average of the numbers per unit area of eutectic cells formed on surfaces of the sections may not be greater than 300 ea/cm.sup.2.

A method for manufacturing a torque-transmitting assembly includes: turning an inner component (b) machining an outermost surface of the inner component such that the outermost surface of the inner component has a continuous convex shape; (c) turning an external component; (d) machining an innermost surface of the external component such that the innermost surface of the external component has a continuous convex shape; (e) heating the innermost surface of the external component to expand a size of the innermost surface after machining the innermost surface of the external component; (f) placing the heated external component onto the inner component while the inner component is maintained at room temperature; and (g) holding the inner component and the external component in place until an interface between the innermost surface of the external component and the outermost surface of the inner component reaches the room temperature.

A brake disk or drum has at least one working surface which opposes a braking member such as a brake pad or shoe. A plurality of spaced, raised island formations are provided across the working surface, with channels extending between the island formations. Each raised island formation has an outer surface which contacts a brake pad or brake shoe during braking.

Brake calipers, molds and method of producing brake calipers are disclosed including a brake caliper mold for molding a brake caliper, the brake caliper mold comprising: a first mold section; a second section half; a core member configured to form a piston bore, the core member comprising: a tower configured to form a tower window in a bridge of the brake caliper and a piston bore extension to form a piston bore of the brake caliper; and four locator forming surfaces located on the tower, each of the four locator forming surfaces configured to form a separate lateral data reference surface on the brake caliper, the lateral data reference surfaces capable of being used for subsequent machining of the brake caliper to predetermined tolerances.

A friction clutch assembly for an automatic transmission, a friction clutch plate, and a method of forming a friction clutch plate are provided. The method includes providing a friction material layer for a face of the friction clutch plate and cutting the friction material layer with a laser beam to form a plurality of grooves within the friction material layer. In one version, a friction plate for the friction clutch assembly includes an annular core plate having first and second opposed faces and defining an outer edge and an inner edge. Friction material is affixed to at least one of the first and second opposed faces. The friction material defines a plurality of grooves within the friction material, each groove being bordered by friction material having a ridge. The cross-section of the ridge has a corner having a radius of curvature that is less than 300 microns.

A brake disk or drum has at least one working surface which opposes a braking member such as a brake pad or shoe. A plurality of spaced, raised island formations are provided across the working surface, with channels extending between the island formations. Each raised island formation has an outer surface which contacts a brake pad or brake shoe during braking.

A brake carrier is provided for a disc brake having at least one brake pad, wherein the brake carrier includes: a wrap-around disc holder that wraps around a section of a brake disc of the disc brake in a frame-like manner; at least one brake pad slot in which the brake carrier guides the at least one brake pad, wherein the at least one pad slot is formed by carrier lugs, support surfaces and bridge struts on the wrap-around disc holder. The brake carrier is produced as a single piece using a shaping method and has a mold partition burr. The mold partition burr is arranged outside of the wrap-around disc holder.