... 30T, 40T, 50T, 1Motorized Screw Jack. Motorized Screw Jack/Worm Gear Screw Jack/Worm Gear Screw Jack/Model: RN-0.5T, ... Configuration: Worm and worm gear, bearing, housing and lead screw 3. Function: Elevating, Lowering, Pulling, Pressing, Pushing, ... Loading: 0.5 ton ~ 100 ton (per set) Dynamic Loading: 0.1 ton to 26 ton ( ... per set) 7. Accessory: Motor, hand wheel, reducers, ...