... R&D,production & sales a new Europe-type RNF-Series Cubic Gearboxes Screw Type Jacks, small&compact appearance, installation sizes is the ... on different accuracy rated.Worm shaft&worm gear play, high speed(N),worm shaft backlash ±3 degrees, Low speed ... motor,travel nut,protetive tube,rubber bellows,limited switches,couplings,linking shaft,trunnion base etc.Application Industries:Precision lift ...