A manufacturing process may comprise: stacking a plurality of friction discs together, each friction disc comprising a lug defining a surface; and depositing a composition to bond to the surface of a first friction disc in the plurality of friction discs to form a wear pad defining a wear surface.

The disclosure provides a friction disk and a brake including a magnetic yoke iron core, a first movable plate, a friction disk, a first coil, at least one second coil, an armature and an elastic part; the magnetic yoke iron core includes a first mounting space, a second mounting space and at least one third mounting space distributed coaxially; the first movable plate is located in the first mounting space and close to a first shaft end; the friction disk is located in the first mounting space; the first coil is arranged in the second mounting space; the at least one second coil correspondingly is arranged in the at least one third mounting space; the armature is located at the second shaft end; the elastic part has a pre-tightening force that enables the armature to be far away from the magnetic yoke iron core.

The disclosure provides a magnetic yoke iron core and a brake including a magnetic yoke iron core, a first movable plate, a plurality of friction disks, at least one second movable plate, a coil, an armature and an elastic part; the first movable plate is located in a first mounting space and close to a first shaft end; a plurality of friction disks are sequentially arranged in the first mounting space along an axial direction of the magnetic yoke iron core and located at a side of the first movable plate close to a second shaft end; the coil is arranged in a second mounting space; the armature is connected with the first movable plate through a connector; the second movable plate is connected with the connector; and the elastic part having a pre-tightening force which enables the armature to be far away from the magnetic yoke iron core.

The brake disc arrangement (10) comprises a brake disc (20) which extends annularly about an axially extending central axis and defines an inwardly facing circumference comprising a splined portion for transferring torques between the brake disc (20) and a corresponding hub, when the brake disc arrangement (10) is mounted to the hub. The brake disc arrangement further comprises a spring assembly (30) adapted to be axially connected to the corresponding hub. The inwardly facing circumference of the brake disc (20) comprises one or more cavities (24), each cavity (24) being defined by axially opposing lateral walls (26). The spring assembly (30) is partially contained in said one or more cavities (24), such that a portion of the spring assembly (30) may abut each one out of the axially opposing lateral walls (26).

The brake disc arrangement (10) comprises a brake disc (20) which extends annularly about an axially extending central axis and defines an inwardly facing circumference comprising a splined portion for transferring torques between the brake disc (20) and a corresponding hub, when the brake disc arrangement (10) is mounted to the hub. The brake disc arrangement further comprises a spring assembly (30) adapted to be axially connected to the corresponding hub. The inwardly facing circumference of the brake disc (20) comprises one or more cavities (24), each cavity (24) being defined by axially opposing lateral walls (26). The spring assembly (30) is partially contained in said one or more cavities (24), such that a portion of the spring assembly (30) may abut each one out of the axially opposing lateral walls (26).

An aerodynamic noise reduction member 30 includes: a plate-like support portion 32 sandwiched between a plurality of fins 24 and 26 of a brake disk 20 and a rotating member 102 of a railroad vehicle; and a plurality of protruding portions 34 protruding from the support portion 32. Each of the plurality of protruding portions 34 is provided in such a manner that, in a state in which the support portion 32 is sandwiched between the plurality of fins 24 and 26 and the rotating member 102, each of the protruding portions 34 partially occludes between the fastening fin 24 and the anchoring fin 26 adjacent to each other in a circumferential direction of the brake disk 20.

Disclosed are in-wheel driving devices. The devices include a wheel bearing including a hub and an outer ring disposed outward of the hub in a radial direction, a speed reducer including a carrier coupled to a wheel, an annular sealing member disposed between the hub and the carrier and brought into close contact with the carrier to seal lubricant oil supplied into the speed reducer, and wheel bolts that couple the wheel and the carrier and pass through wheel bolt holes formed in the carrier spaced apart from each other in a circumferential direction. The sealing member is concentric with a first virtual circle passing through centers of the wheel bolt holes. The first virtual circle has a larger diameter than the sealing member such that the wheel bolts are located outward of the sealing member in the radial direction.

A suspension device of a motor-vehicle wheel includes a support member of the motor-vehicle wheel connectable to the motor-vehicle structure by means of one or more suspension members, a brake disc connected in rotation with the motor-vehicle wheel, a brake caliper associated with the brake disc and a brake disc cover. The brake caliper is formed in a single piece with the support member of the motor-vehicle wheel by means of additive manufacturing technology.

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 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.