Whatever ball screw jacks or machine screw jacks can be run at 1500RPM. A bevel helical gear motor, or a worm gear reducer is used to reduce the input speed RPM to the screw jack to provide the required travel speed of the lifting screw. Many ball screw jacks or machine screw jacks can be driven directly by 1500RPM and 900RPM 3-phase motors. Electric motors and gear reducers are available mounted directly to many ball screw jacks or machine screw jacks models.