Abstract: The disk-brake comprises a clevis (5), a sliding caliper (3) and an operating mechanism, the latter comprising a mechanism (19) having a wedge displaceable longitudinally between the caliper (3) and a piston, to move them apart, through the action of a pusher (21), which in turn is driven by the pushrod (25) of a drive mechanism (23). The drive mechanism (23) is fastened to the clevis (5) of the brake and the pusher (21) exerts on the wedge a force whose main component is parallel to the plane of the disk and directed in the predominant direction of rotation of the latter.

Abstract: The rotating member (17) of the automatic adjustment device interacts in frictional engagement with a non-rotating plunger (8) of the mechanical control device (9), the adjustment member locked in rotation (18) of the automatic adjustment device having an end (19) passing sealingly and slideably through the front wall (4) of the brake piston (1) and maneuverable (38) manually to carry out resetting of the automatic adjustment device, the adjustment member locked in rotation (18) being pushed in frictional connection (30, 31) with the brake piston (1) to be normally locked in rotation when the brake motor is in operation.

Abstract: The brake motor comprises an inserted piston (26) slideably mounted in a passage (24) formed in the front wall (4) of the brake piston (1) which has, near the other end (31) of the inserted piston (26), a counter-bearing surface (34) facing inward, thus enabling the engagement of an actuating tool (0) to exert, via the inserted piston (26), an axial thrust on the rotating member (16) of the automatic adjustment device of the brake motor and, at the same tine, an axial load in the opposite direction on the brake piston (1) enabling the friction clutch (18, 19) to release between the brake piston (1) and the rotating member (16), after which an axial translation (F) of the assembly enables the resetting of the automatic adjustment device of the brake motor.