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.

Multi-disc clutches are known which usually have a first clutch pack consisting of steel discs and a second clutch pack consisting of friction discs. A disc for a multi-disc clutch is proposed, which has a disc body. The disc body is in a form of an annular disc, and has a driver contour on its inner circumference and/or outer circumference for mounting the disc in a rotationally fixed manner. The disc body is formed by edgewise rolling on the inner circumference thereof.

A brake disk with a surface which is structured in order to increase the adhesion of a coating on the surface, wherein the structuring of the surface comprises at least one recess, the depth of which decreases as the depth of the recess increases wherein the at least one recess has the shape of a spiral structure.

The present disclosure provides steel backing plate wiredrawing equipment and method. The equipment includes a support frame; a first longitudinal rail and a second longitudinal rail which are respectively arranged on two sides of the support frame and are parallel to each other; a longitudinal movement frame slidably arranged on the first longitudinal rail and the second longitudinal rail; and a transverse movement frame slidably arranged on the longitudinal movement frame. A numerical control cutting machine, a vacuum cylinder, a glue dispenser, and a spot welder are integrated on the transverse movement frame; the longitudinal movement frame is provided with a power mechanism I, and the transverse movement frame is provided with a power mechanism II; the support frame is provided with a support plate; and the support plate is provided with a first laminate and a second laminate which are made of steel in sequence from bottom to top.

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.

The present disclosure provides steel backing plate wiredrawing equipment and method. The equipment includes a support frame; a first longitudinal rail and a second longitudinal rail which are respectively arranged on two sides of the support frame and are parallel to each other; a longitudinal movement frame slidably arranged on the first longitudinal rail and the second longitudinal rail; and a transverse movement frame slidably arranged on the longitudinal movement frame. A numerical control cutting machine, a vacuum cylinder, a glue dispenser, and a spot welder are integrated on the transverse movement frame; the longitudinal movement frame is provided with a power mechanism I, and the transverse movement frame is provided with a power mechanism II; the support frame is provided with a support plate; and the support plate is provided with a first laminate and a second laminate which are made of steel in sequence from bottom to top.

A caliper body of a caliper for a disc brake may have two opposite elongated portions, each adapted to face one of the two opposite braking surfaces of the disc of disc brake. The two opposite elongated portions are connected to each other by at least one caliper bridge. At least one of the two opposite elongated portions may have seat walls which delimit at least one seat, adapted to house at least one portion of a thrusting element. The thrusting element may be adapted to determine a thrusting action against at least one brake pad associable with the caliper body to press the at least one brake pad against one of the two opposite braking surfaces. The seat walls may have at least one seat bottom wall, in which the axial thickness of the seat bottom wall is less than 5 mm.

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.

Machining ball tracks and guiding webs of an inner part for a constant velocity joint in a clamping arrangement includes mechanical machining of at least one first ball track in a first rotational position; rotating the articulated inner part into a second rotational position for machining at least one further ball track; wherein at least one guiding web is mechanically machined during the rotating of the inner joint part from the first rotational position into the second rotational position. A corresponding device is used for machining ball tracks and guiding webs of an inner joint part.

According to the present invention, a low surface-roughness part (114a) is formed at a first tapered part (114), and, as a result, the roughness of an opening-edge of a groove part (113a) of an internal spline part (113) that opens at the first tapered part (114) is reduced, and surface pressure applied by the opening edge to a tooth (123b) of an external spline part (123) can be reduced. As a result, the opening edge of the groove part (113a) of the internal spline part (113) can be kept from digging into the tooth (123b), and variation, between products, in the insertion load of a second shaft part (12) can be suppressed.