An electromechanically actuated disc brake

An electromechanically actuated disc brake for motor vehicles with a brake caliper and an arranged on the brake caliper actuation unit, with two cooperating with one side surface of a brake disc, limited displaceably arranged in the brake caliper friction linings, wherein one of the friction linings by an actuating member by the actuating unit directly, and the other friction lining by the action of an applied by the brake caliper reaction force with the brake disc is engageable, wherein the actuating unit comprises a coaxially to the actuating element arranged electric motor and an operatively disposed between it and the actuating element reduction gear, and wherein means are provided which after the actuation of the electric motor a return rotation of its rotor prevent with subsequent disconnection of the current supplied to the electric motor, characterized in that the means (by an electromagnet 20 bz w. 21, 22) are formed, whose armature rotary (22), longitudinally displaceable (the rotor 10) is coupled.