A screw jack is a device used to apply a force, push and pull, or move to a position and hold by mechanically converting rotary motion into linear motionScrew jacks (mechanical actuators) capacities from 14 ton to 350 tonsAvailable in machine screw, ball screw, stainless steel machine screw actuators, micro-miniature actuators, high duty cycle actuators, motorized machine screw and ball screw actuators, electric cylinders and motor control systemsAccessories include miter gear boxes, c-face motor adapters, limit switches, transducers, visual and digital position indicators, couplings, ball screws and ball screw systems, and locking ringsCan be used as alternatives to hydraulic and pneumatic systems