A brake or a clutch includes a central shaft, an output-side threaded driver, an output brake plate, an input brake plate, and an input-side threaded driver. The output-side threaded driver and the input-side threaded driver are rotationally locked to the central shaft, such as by splines. The output-side threaded driver is threaded to the output brake plate and the input-side threaded driver is threaded to the input brake plate. The output brake plate is threaded to the input brake plate in a direction opposite the threaded engagement of the drivers to the brake plates. The brake or clutch may include two stator plates and three friction discs located between the output brake plate and the input brake plate.

A vehicle-mounted apparatus includes: a motor unit configured to apply a rotational driving force to a wheel of a vehicle and including a drive motor and a speed reducer that reduces a speed of rotation of an output shaft of the drive motor; and a friction brake that reduces rotation of the wheel. The friction brake includes: at least one rotation disc provided so as to be rotatable integrally with the output shaft; a housing that is a non-rotatable member; at least one friction plate held by the housing so as to be movable relative to the housing in the axial direction such that rotation of the at least one friction plate relative to the housing about the axis is restricted; and a pressing device that presses the at least one friction plate against the at least one rotation disc.

A brake dust cover is disposed between a non-rotating body rotatably supporting an axle and a disc rotor rotating together with the axle so as to cover the disc rotor from an inner side in a vehicle width direction. The brake dust cover includes a first plate-like member having a C-shape in which a part of a circular ring is cut out, and a second plate-like member coupled to the first plate-like member. The second plate-like member includes a fixed portion fixed to the non-rotating body, and a plurality of support portions extending radially from the fixed portion. The first plate-like member is coupled to the second plate-like member to overlap the support portions such that an opening portion is formed between an inner edge of the first plate-like member and an outer edge of the fixed portion of the second plate-like member when viewed in the vehicle width direction.

A brake dust cover is disposed between a non-rotating body rotatably supporting an axle and a disc rotor rotating together with the axle so as to cover the disc rotor from an inner side in a vehicle width direction. The brake dust cover includes a first plate-like member having a C-shape in which a part of a circular ring is cut out, and a second plate-like member coupled to the first plate-like member. The second plate-like member includes a fixed portion fixed to the non-rotating body, and a plurality of support portions extending radially from the fixed portion. The first plate-like member is coupled to the second plate-like member to overlap the support portions such that an opening portion is formed between an inner edge of the first plate-like member and an outer edge of the fixed portion of the second plate-like member when viewed in the vehicle width direction.

A brake carrier for a disc brake of a commercial vehicle has an attachment region for fixing on a vehicle axis and at least one pad shaft for receiving and supporting at least one brake pad. The pad shaft is formed by way of an inlet-side carrier horn, an outlet-side carrier horn and a bridge which connects the inlet-side carrier horn and the outlet-side carrier horn. Regions of the bridge which adjoin the carrier horns form bearing surfaces for radially supporting the at least one brake pad. The respective guide contours for guiding the brake pad into a push-in position are arranged to the side of the pad shaft on a side surface of the carrier horns, in which push-in position the brake pad can be pushed axially with respect to the vehicle axle into the pad shaft between the carrier horns.

A brake caliper (1) for a disc brake has a tensioning side (2) and a rim side (3) and bears a brake cylinder flange face (4), which, for receiving a brake cylinder, is disposed on the tensioning side (2). Two sliding bushes (5, 6) for an axial displacement of the brake caliper (1) are disposed on a brake support, and two flange faces (8, 8a) are disposed axially parallel to each other on the tensioning side (2) between the sliding bushes (5, 6) for receiving a sensor resetting unit (9).

A motor includes a housing containing a rotor and stator. A brake assembly is adapted to restrain rotation of the rotor. A brake controller includes a brake diagnostics system. At least one vibration sensor is located in the housing and provides vibration data to the brake diagnostics system in response to a brake operation cycle of the brake assembly. The vibration data is used by the brake diagnostics system to assess an operative condition of the brake assembly.

A caliper bracket of a vehicle disk brake includes an axle coupling part, an extension part, a caliper attaching part and a swing arm coupling part. The axle coupling part is disposed on an opposite side to a disk rotor and is attached to a rear wheel axle passing through a center of the disk rotor. The extension part is extending from the axle coupling part. The swing arm coupling part is provided on the other side part of the extension part in the longitudinal direction and is coupled to a swing arm. The extension part is formed to linearly extend from the axle coupling part, and the swing arm coupling part is formed to have a cuboid shape protruding toward the opposite side to the disk rotor and capable of fitting with a coupling groove member provided for the swing arm.

A caliper bracket of a vehicle disk brake includes an axle coupling part, an extension part, a caliper attaching part and a swing arm coupling part. The axle coupling part is disposed on an opposite side to a disk rotor and is attached to a rear wheel axle passing through a center of the disk rotor. The extension part is extending from the axle coupling part. The swing arm coupling part is provided on the other side part of the extension part in the longitudinal direction and is coupled to a swing arm. The extension part is formed to linearly extend from the axle coupling part, and the swing arm coupling part is formed to have a cuboid shape protruding toward the opposite side to the disk rotor and capable of fitting with a coupling groove member provided for the swing arm.

A disc brake system that is an opposed piston brake system. The disc brake system includes a brake caliper having an inboard side and an outboard side. The inboard side of the brake caliper is configured to support more brake pistons than the outboard side of the brake caliper.