Low-consumption permanent-magnet offset external rotor radial magnetic bearing

A low power consuming eternal magnetic external rotor magnetic axletree comprises outer magnetic loop, eternal magnet, iron stators, magnetism irritation loop, inner magnetic loop, iron stators and air clearance. On each side of X and Y axes, each two iron stators constitute eight magnetic pole in four directions. On each magnetic pole enwind magnetism irritation loop, outside of the iron rotors is the outer magnetic loop, inside the iron rotors are the iron stators, where between the rotors and stators leave air clearance. The inner magnetic loop fix inside of the iron stator. The eternal magnet locates between two inner magnetic loops. The two inner loops link with two iron stators to make a magnetic circle.