Parking brake actuator

The actuator (100) has a case (110) for housing an electric motor driving via a worm gear formed of a nut controlling a screw (120). A plastic stiffener sleeve is fitted on an end of a rod (111) around a thrust bearing (130) and an endfitting (135) forming the stop of a sheath (142) of a brake cable i.e. bowden cable (140), for blocking the endfitting and the thrust bearing and avoiding deformation of an end of the brake cable beyond the thrust bearing, so as to align an inner cable (141) on an axis of the screw within the rod and prevent transverse force on the screw and the nut that entails. An independent claim is also included for a parking brake system controlled by a cable.