... enterprise mainly produces Centrifugal fan and blower, external rotor axial fan,ventilation fan, Duct fan, shaded pole motor, external rotor fan motor,aluminum die ... Overview: The temperature of the motor is measured when the fan is under zero static pressure. When leaving the factory, ... . 68: Motor air gap diameter3: L15: Core length code4: P4 : Motor pole numbe, 2,4,6,8 poles3. Products Display4 ...