... install in the form of multi-input high reliability Worm Screw Jack:(speed reducer,reducer ,gearbox,gesr units) 1. Model: ... 2. Configuration: Worm and worm gear, bearing, housing and lead screw 3. Function: Elevating, Lowering, Pulling, Pressing, Pushing, Rotating 4 ... (per set) 7. Accessory: Motor, hand wheel, reducers, rubber Bellows, steel cover, bevel gearbox, Safety nut, frequency-inverter, brake, ...