... a new Europe-type RNF-Series Cubic Gearboxes Jack Screws Lift, small&compact appearance, installation sizes is the same ... screw jack application, isn’t guided and without any guide rails, lifting screw does not do linear motions, only rotation, ... switches,couplings,linking shaft,trunnion base etc.Application Industries:Precision lift table, Roll forming machines, Press machines,Tunnel Freezer, Surface ...