... ,20T,30T,40T,50T,100T 2.Configuration: worm shaft,worm gear,bearing,oil seal 1.Model: RN-0.5T,1T,2T ... ,15T,20T,30T,40T,50T,100T2.Configuration: worm shaft,worm gear,bearing,oil seal,housing and lifting Screw3.Function: Elevating, Lowering ... Ranges: 0.03 HP ~ 21.5HP.8.Lifting Screw Diameters: 20 mm ~100 mm.9.Lifting Screw Pitch: 5mm ~ 16 mm ...