... a kind of lifting parts, and other series worm gear screw lift compared with a compact,small size,easy ... 15T,20T,30T,40T,50T,100T2.Configuration: Worm and worm gear, bearing, housing and lead screw.3.Function: Elevating, ... cover, bevel gearbox, safety nut, frequency inverter, brake, trunnion base, limit switches, coupling, link shafting.8. Application: Machinery, metallurgy, construction, irrigation ...