A disk brake with lower cost and improved maintainability is provided. The brake caliper includes at least one actuating device for actuating the disc brake using a moveably guided bridge. The bridge has at least one threaded hole into which an actuating spindle is displaceably located. A brake disk end of the actuating spindle penetrates a caliper closing plate facing the brake disk. The positioning spindle carries a rotatably-mounted pressure piece which presses a brake pad against the brake disc. The opening is sealed by a bellows retained on the brake caliper on one side and on the pressure piece on the other side. A securing ring non-rotatably located on the actuating spindle and rotatably connected to the thrust piece interacts with the bellows during brake application and/or release to maintain a desired air gap between the brake disk and brake pad.

A piston has a piston main body including an aluminum alloy, and a covering layer formed on the outer surface of the piston main body, and the covering layer has a first plating layer including an iron-phosphorous alloy, and a second plating layer including a nickel-phosphorous alloy formed on the first plating layer.

A piston has a piston main body including an aluminum alloy, and a covering layer formed on the outer surface of the piston main body, and the covering layer has a first plating layer including an iron-phosphorous alloy, and a second plating layer including a nickel-phosphorous alloy formed on the first plating layer.

A caliper for disc brake comprising a caliper body housing at least one pair of pads disposed on opposite sides along an axial direction and comprising at least one thrust piston which interfaces with the pad so as to press it against the associable brake disc, and at least one return spring that exerts a return thrust on the support plate of the pad. The return spring comprises a fixing portion to the caliper body that extends from axially opposite sides in separate thrust branches, each thrust branch interfacing with a support plate of a related pad. Each thrust branch comprises a first rectilinear portion that extends towards the corresponding pad, a curved portion, integral with the first rectilinear portion and folded in approach to the fixing portion, a second rectilinear portion that extends from the curved portion in approach to the fixing portion. The second rectilinear portion terminates with a free cantilevered end and interfaces with an edge of the support plate.

Provided is an electric braking device that transmits power generated by an electric motor MTR to a pressing member PSN and causes pressing force to be generated by the pressing member PSN with respect to a friction member MSB. Hysteresis characteristics in the relation between the power supply amount to the electric motor and the pressing force of the pressing member are detected each time a predetermined point in time arrives. Upon determination of a “holding state in which the pressing force is held constant”, a minimum value for a power supply amount that makes it possible to maintain the current pressing force is obtained on the basis of the most recently detected hysteresis characteristics and the power supply amount is set to a value determined on the basis of the obtained minimum value for the power supply amount.

Provided is an electric braking device that transmits power generated by an electric motor MTR to a pressing member PSN and causes pressing force to be generated by the pressing member PSN with respect to a friction member MSB. Hysteresis characteristics in the relation between the power supply amount to the electric motor and the pressing force of the pressing member are detected each time a predetermined point in time arrives. Upon determination of a “holding state in which the pressing force is held constant”, a minimum value for a power supply amount that makes it possible to maintain the current pressing force is obtained on the basis of the most recently detected hysteresis characteristics and the power supply amount is set to a value determined on the basis of the obtained minimum value for the power supply amount.

An electric brake device includes: a brake rotor; a friction member; friction member contactor; an electric motor; braking force estimation unit; and a control device. The control device has a control system in which a motor rotation angle of the electric motor is included in a state quantity in a control computing of a follow-up control. The control device includes a state quantity reset function unit that resets at least the motor rotation angle to a predetermined value, on the basis of a predetermined condition using at least one of a target braking force, an estimated value of a braking force, an amount of change of a target braking force, an amount of change of an estimated value of a braking force, and a deviation between a target braking force and an estimated value of the braking force.

An apparatus for thermal insulation on an actuating apparatus, which can be loaded with a pressure medium, of a disk brake having a piston which slides in a cylinder for the axial displacement of the brake linings against a brake disk, in particular a partially lined disk brake having an insulation body made from non-thermally conducting/poorly thermally conducting material for the insulation of the components of the actuating apparatus with respect to a brake lining. It is possible for a substantially circularly annular, metallic brake lining to be inserted into an insulation body which is made from ceramic material and separates the piston from the brake lining in a thermally insulating manner. The insulation body is configured with side faces which adjoin the circularly annular brake contact face so as to run toward the annular circumferential face in a convexly rounded manner in the direction of the piston.

An apparatus for thermal insulation on an actuating apparatus, which can be loaded with a pressure medium, of a disk brake having a piston which slides in a cylinder for the axial displacement of the brake linings against a brake disk, in particular a partially lined disk brake having an insulation body made from non-thermally conducting/poorly thermally conducting material for the insulation of the components of the actuating apparatus with respect to a brake lining. It is possible for a substantially circularly annular, metallic brake lining to be inserted into an insulation body which is made from ceramic material and separates the piston from the brake lining in a thermally insulating manner. The insulation body is configured with side faces which adjoin the circularly annular brake contact face so as to run toward the annular circumferential face in a convexly rounded manner in the direction of the piston.

The invention relates to a vehicle brake, in particular a utility vehicle disc brake, having a brake carrier with at least one brake pad holder, at least one brake pad which is guided so as to be axially displaceable and supported in the brake pad holder, and a brake caliper which is axially movable relative to the brake carrier. According to the invention, it is proposed that the brake carrier is structurally reinforced on the run-out side relative to the run-in side, and at least one running direction indicator for indicating the first rotational direction is arranged on the brake carrier.