... is a kind of lifting parts, and other series worm gear screw lift compared with a compact,small size,easy to ... ,15T,20T,30T,40T,50T,100T2.Configuration: Worm and worm gear, bearing, housing and lead screw.3.Function: Elevating, lowering, pulling ... Loading: 0.1 ton to 26 ton per set7. Accessory: Motor, hand wheel, reducers, rubber bellows, steel cover, bevel gearbox, safety ...