... mainly produces Centrifugal fan and blower, external rotor axial fan,ventilation fan, Duct fan, shaded pole motor, external rotor fan motor,aluminum die ... : The temperature of the motor is measured when the fan is under zero static pressure. When leaving the factory, ... 9) Certificate: CE, CCC,ISO(10) Illustration of Model YWF-68L15P41.YWF: Asynchronous external rotor motor2. 68: Motor air gap diameter3 ...