Axial fan, External rotor motor, outside rotor air blower AXIAL FAN with external rotor motors:1) Frequency: 50 / 60Hz2) Fan blade diameters: 250mm,300mm, 350mm, 400mm, 450mm ... Pole Motor, Cross Flow Fans, AC fan, DC fan and Centrifugal Blowers. Our products are extensively applied to all kinds of refrigeration equipments, air ...