Joyce Dayton ball screw jacks feature a ball nut with integral ball bearings that circulate along the surface of the ball screw.  This significantly reduces friction between the ball nut and the ball screw, resulting in greater efficiency.  Joyce Dayton ball screw jacks require up to two-thirds less torque to move loads than machine screw jacks and require a brake motor or external locking device to hold position.  Both upright and vertical ball screw jacks are available from Joyce Dayton to lift and position loads up to 50 Tons.  Many styles of Joyce Dayton ball screw jacks are available for unique applications.  Request A Quote!