Worm gear screw jacks and electric drive from a single source. Motors and motor adapter flanges with worm gear screw jacks to produce powerful drive packages that can be put to use quickly and without complications. They are intended to have 3-phase motors attached as standard. Motor adapter flanges are used to mount motors to worm gear screw jacks and house the coupling for connecting the motor to the drive shaft. When ordering, please specify the side to which the motor adapter flange is to be attached.