... , #45 steel-shaft 3.ISO9001,Warranty-1yea WPWDKT gearbox worm speed reducer TypeWPWDKT gearbox worm speed reducerSize40-250Ratio10,15,20,25,30,40,50,60Mounting ... HousingCasting IronMaterial of Shaftchromium steelOil sealTai Wan NAKBearingREN BEN.CUWPWDKT gearbox worm speed reducer specification