The hydraulic machine comprises: —a fixed part, —a part mounted so as to rotate about an axis (O-O) with respect to the fixed part, —a stack (50) of discs (53, 54) forming a brake or clutch, the discs being able to be in abutment against one another by way of friction surfaces (88) having a mean friction radius (Rf) with respect to the axis, —a push rod (80) that is able to push the discs into abutment against one another, in a direction parallel to the axis, over a thrust surface (4), the thrust surface having a mean thrust radius (Rp) with respect to the axis which extends to within or beyond the mean friction radius (Rf). The push rod (80) has a radial annular notch (90) indenting the push rod from an opposite side of the push rod from the axis (O-O) when the mean thrust radius (Rp) extends beyond the mean friction radius (Rf), and otherwise from the side of the push rod closest to the axis.

Disclosed is an electronic parking brake system includes: an electronic parking brake having an electric motor and a hydraulic cylinder; an ESC actuator configured to generate and supply hydraulic pressure to the hydraulic cylinder; and a controller configured to control the electric motor and the ESC actuator. The controller determines whether or not the electronic parking brake is normally releasable based on the temperature of the electronic parking brake when parking is released, and controls the electric motor to supply hydraulic pressure to the hydraulic cylinder via the ESC actuator and start parking release control when normal release is not possible.

Disclosed is a method for operating an automated parking brake for a motor vehicle comprising at least one braking mechanism with a brake piston. In said method, the parking brake moves the brake piston by means of an actuator between an idle position, in which the brake piston applies no braking moment, and a braking position, in which the brake piston applies a braking moment, in relation to a brake disk, and during a disengagement process of the parking brake, a reference point is determined in which the brake piston is located in a position in which it applies substantially no braking moment and which is between its idle position and its braking position. The method according to the disclosure is characterized in that the reference point is estimated taking into account an extrapolation of a variable describing the disengagement process.

A disk brake piston having a spindle nut, and a load bearing column within a piston body. The load bearing column includes a footing configured to push against a brake pad and a core extending from the metal footing and slidably located within the piston body, wherein the spindle nut is configured to contact and push the metal core which pushes the metal footing which pushes on the brake pad.

A brake assembly adapted to be mounted to the flange of an axle housing. The brake assembly includes a stationary plate having a plurality of threaded holes therein. The brake assembly also includes a mounting sleeve positioned adjacent to the axle housing flange opposite the stationary plate. A plurality of holes are provided through the mounting sleeve and are aligned with the threaded holes in the stationary plate. A bolt is received through each of the holes in the mounting sleeve and the aligned holes in the axle housing flange and the threaded holes in the stationary plate to secure the brake to the axle housing. The mounting sleeve may be provided in two or more separate pieces in order to facilitate installation.

An object of the invention is to provide a disc brake improved in reliability.

In a disc brake, a first holder-side projection is formed on a holder, and a first cover-side recess that fits the first holder-side projection of the holder is formed in a cover. An elastic member is disposed between the first holder-side projection of the holder and the first cover-side recess in the cover.

A disc brake assembly having an anchor bracket, a disc type of service brake assembly having a first brake caliper configured to be secured to the anchor bracket; and an electric disc type of parking and emergency brake assembly having a second brake caliper configured to be secured to the anchor bracket.

A hydraulic power take-off is provided for use with industrial drives that deliver power to industrial equipment. The hydraulic power take-off has a brake disconnect system that can manually release a brake assembly to allow low-effort rotating of the industrial equipment components to facilitate servicing.

A hydraulic power take-off is provided for use with industrial drives. The hydraulic power take-off has a multiple-force brake system that facilitates actively slowing large inertial loads associated with a heavy rotating mass of an industrial machine. The multiple-force brake system applies different braking forces at different times to control deceleration of the heavy rotating mass in the industrial machine to reduce its stopping time. The multiple-force brake system may include a clutch assembly and a brake assembly. A control system may control the clutch and brake assemblies to provide the multiple-force brake system a relatively higher energy brake engagement state and a relatively lower energy brake engagement. This may include alternating between the higher and lower energy brake engagement states to pulse between high and low pressure braking to facilitate cooling of the system while slowing the large inertial loads.

A disc brake for a commercial vehicle has a brake caliper spanning a brake disc on the vehicle side, in which brake caliper a clamping device is arranged which has a pivotable brake lever engaging in at least one bridge carrying a brake plunger, which at the same time is directly or indirectly supported at the inner side of a wall of the brake caliper. The contact area of the bridge at the brake lever or of the brake lever at the brake caliper is configured as a pivot bearing having a bearing shell cross-sectionally configured as an arc forming a part of the pivot bearing. The bearing shell is placed in a seating. The disc brake is configured such that the bearing shell is located in the pivoting direction of the brake lever with its opposite longitudinal borders at stop edges, which longitudinally limit the trough-shaped seating.