Outer rotor motor, fan component and air conditioner

The external rotor motor comprises a rotor assembly, a stator assembly and a buffer piece, the rotor assembly comprises a rotating shaft and a rotor, the rotating shaft and the rotor are matched to rotate synchronously, the stator assembly comprises a stator, the stator is provided with a center hole, and the buffer piece is arranged in the center hole. The rotor is sleeved outside the stator and is coupled and matched with the stator, the rotating shaft is arranged in the center hole in a penetrating manner, and a matched bearing is arranged between the rotating shaft and the stator; the stator is provided with a shaft shoulder part extending into the center hole, the matched bearing and the shaft shoulder part are oppositely arranged in the axial direction, and the buffer part is arranged between the shaft shoulder part and the matched bearing and is constructed to be compressible and deformable. According to the external rotor motor, the matching bearing can be prevented from being damaged due to collision between the matching bearing and the shaft shoulder part.