Device for operating a braking device

The device has an axially movable rod for actuating a piston controlling a brake valve, a no-load movement component and a displacement sensor sliding element. The rod has a base plate on its end facing the piston and fixed in a guide ring opening to rotate with the ring, which is guided in the housing to rotate with the housing and has axial elongated holes at intervals. The no-load stroke component is a distance ring guided in the guide ring. The device has an axially movable rod (4) for actuating a piston (14) controlling a brake valve, a no-load movement component and a displacement sensor sliding element. The rod has a base plate (18) on its end facing the piston and fixed in a guide ring (10) opening (20) to rotate with the ring, which is guided in the housing to rotate with the housing and has axial elongated holes (22) at intervals. The no-load stroke component is a distance ring (8) arranged and guided in the guide ring