"Micro Cooling Fan" magnetic bearings using magnetic levitation motor design is the use of magnetic force of the rotor is suspended in the air, so there is no mechanical contact between the rotor and the stator. The principle is that the magnetic flux lines with the maglev line perpendicular to the axis of the core and the maglev line are parallel, so "Micro Cooling Fan" weight of the rotor is fixed on the running track, use is almost no load in the axial to the opposite maglev line direction top bracing, form the entire rotor suspended on fixed orbits. With conventional ball bearings, oil bearing compared, "Micro Cooling Fan" there is no mechanical contact magnetic bearing rotor can run to a high speed, with a small mechanical wear, low energy consumption, low noise, long life, no lubrication, no oil pollution, etc., especially for high-speed, vacuum, clean, and other special environment.