... ,20T,30T,40T,50T,100T 2.Configuration: worm shaft,worm gear,bearing,oil seal 1.Model: RN- ... 10T,15T,20T,30T,40T,50T,100T2.Configuration: worm shaft,worm gear,bearing,oil seal,housing and lifting Screw3 ... precision,Safely self-locking,Heavy duty,Uniform lifting speed,small sizes,easy installation,low noise,long life, ... Lifting Screw Pitch: 5mm ~ 16 mm.10.Lifting Speed: 75 mm/min ~1800 mm/min 11.Accessory: ...