... ,5T,10T,15T,20T,30T,40T,50T,100T 2.Configuration: worm shaft,worm gear,bearing,oil seal 1.Model: RN-0.5T,1T ... ,3T,5T,10T,15T,20T,30T,40T,50T,100T2.Configuration: worm shaft,worm gear,bearing,oil seal,housing and lifting Screw3.Function: Elevating ... : Positioning precision,Safely self-locking,Heavy duty,Uniform lifting speed,small sizes,easy installation,low noise,long life,security and environment ...