The gearwheel in the reducer is made of nice compound metal, which can extend the reducers life. Surface Aerator Speficitation: ModelHPPhaseVoltageCover AreaOxygen Transfer20/40/40H LoadYC1.523380V~440V0.75-1.2acre2.6kg/h56/130/140Main parts NO.Item NameQuantiyReferanceFunction1Motor1set1.5kw,air cooling,electric and manual sartProvide power2Reducer1setGear style, 14:1, cast iron bodyTransferring ...