... in the form of multi-input high reliability Worm Screw Jack:(speed reducer,reducer ,gearbox,gesr units) 1 ... Configuration: Worm and worm gear, bearing, housing and lead screw 3. Function: Elevating, Lowering, Pulling, Pressing, Pushing, Rotating ... gearbox, Safety nut, frequency-inverter, brake, trunnion base, limit switches, coupling, link shafting. 8. Application: Machinery, metallurgy, construction, ...