圆上泽文大学 Applications 1 ▣Power screws >Either screw can move,as in a jack or >Nut can move,as in a positioning device. Head servomotor Lever coupling Sq.threaded rod lead screw nut 圆上清支大华 Applications 1 33 Applications 1  Power screws  Either screw can move, as in a jack or  Nut can move, as in a positioning device. Applications 1