Cyclinder gearbox is for general-purpose and widely used in waterpower, firepower, wind energy industry, petroleum industry, rubber industry, building material industry, mine, transportation area and national defense industry. Input speed -1500r/min Reduction ratio: 1-stage reduction(ZDY series) -1.25-6.3 2-stage reduction(ZLY series) -6.3-20 3-stage reduction(ZSY series) -22.4-100.