... 30T, 40T, 50T, 100T 2. Configuration: Worm and worm gear, bearing housing and lead screw 3. Function: Elevating, Lowering ... Accessory: Motor, hand wheel, reducers, rubber Bellows, steel cover, bevel gearbox, Safety nut, frequency- inverter, brake, trunnion base, ... jack, lift, planetary speed reducer, worm gear reducer, helical geared motor, spiral bevel gear unit, parallel-shage geared motor, cycloidal ...