Radiator Fan MotorsParameters:Model: San Ace120Nominal power: DC12V1.9APower: 20W (power 20W aluminum frame motor, full power)Wire: four pins-only positive and negative two pins can be used (also can be connected to the governor)Bearing type: high precision double ball bearingSize: 120×120×38mm highNoise: 57 dBAir volume: 180.08 CFMNumber of blades: 7 blades (injection molding, PBT + 30% glass fiber + VO flame retardant)Fan frame: aluminum alloyFan speed: 4800RPM