... 50T, 1Motorized Screw Jack. Motorized Screw Jack/Worm Gear Screw Jack/Worm Gear Screw Jack/Model: RN-0.5T, 1T, 2T ... 30T, 40T, 50T, 100T 2. Configuration: Worm and worm gear, bearing, housing and lead screw 3. Function: Elevating, Lowering, ... , Safety nut, frequency-inverter, brake, trunnion base, limit switches, coupling, link shafting. 8. Application: Machinery, metallurgy, construction, irrigation, ...