Abstract: The present specification describes an actuating lever (21) for a disc brake (1, 7), having a cam section (23) with a part cylindrical curved surface (25) and a part cylindrical channel (27) with an elongate cylindrical force transmitting member (29) located therein and being parallel to the longitudinal axis of the said part cylindrical surface (25), and having opposite end regions which are located in recesses (31, 33) formed in the lever (21) at opposite ends of the said channel (27) to thus retain the force transmitting member (29) in position on the lever (21).

Abstract: A first screw body (58) is rotatively mounted around a screwing axis (C; C′, C″), that extends parallel to the axis (A) of the brake disk (10) in a housing axially arranged next to the brake disk (10) in the mounted position. A second screw body (66) is secured against rotation and linked to the first screw body (58) by a readjustment threaded coupling (68), so that both screw bodies (58, 66) form together a longitudinally adjustable tappet for exercising an actuating force on a brake shoe (22). A rotary body (42) can be rotated around its own axis of rotation (B) by means of an actuating member (38) in order to axially displace the tappet The axis of rotation (B) is at least approximately parallel to the brake disk. Linking gears arranged between the rotary body (42) and the first screw body (58) have a right-angle gear a drive and a coupling device (90) which transmit a limited torque for readjusting said brake shoe.