1.irrigation transimission gearbox for irrigation equipments 2.HRC54-62,hard gear 3.Oil cooling 4.Low Noise 5.High efficien DesignType rangeMounting arrangementMaterial quality (high loading capacity)processes by carburization, quenching and tooth grinding processZLYJ112,133,146,173,200,225,250,280,315,330,375,420,450;ZSYJ315,375,395,420,450,560no strict limitationGear surfaceHollow input ...