Magnetic Levitation System (MS), Sunon's latest innovation, has made a great impact on the fan motor field after it's introduction in 21st Century.The MS design is compatible with all kinds of traditional motors using sleeve or ball bearings, helping fan motors to create an unprecedented vibration-free, noise-free operating environment, which is a necessity for the thermal management of PC and IT industry.

For traditional fan motors, no matter whether they use sleeve or ball bearings, there still are some shortcomings, such as operating noise, friction, vibration, oil leakage, rotor stuck and shortens fan life. Because of so many disadvantages in traditional fan motors, Sunon has been developing a new motor structure for some years now, and with the MS system, this research bears fruit.

The principle of SUNON MS design is based on the utilization of magnetic force. When the system comes into operation, the impeller, being totally and evenly attracted in the magnetic field, rotates in a full 360 degree circle and is perfectly balanced. This keeps the impeller rotating in a consistent orbit and the shaft sitting at a fixed point without any vibration or friction against inner surface of the bearing in any mounting position, helping fan motors creating an unprecedented vibration-free, noise-free operation environment.

What Makes MS Magic

With Sunon MS design, the magic is the induction of magnetic force. When the motor is in operation, magnetic force helps to attract the impeller rotor towards the end point of shaft. The weight of the rotor is entirely attracted by the magnetic force and the shaft, being without gravity load, pivotally held in the bearing. In this way, a constant distance between bearing and shaft is formed naturally without any contacts between the surfaces.

Because the shaft rotates evenly in a constant orbit and the rotor is held at fixed point, no matter what the mounting position is, there is no friction and noise created, and no slanting and wobbling, which means the bearing life is extended much longer.

Except for sleeve and ball bearings, MS also works well with Sunon's own invention, the Vapo bearing, which features its specially treated inner surface to resist abrasions. With the combination of the MS design and Vapo bearing, all the advantages of ball and sleeve bearings are maintained but defects eradicated. In addition, Sunon's Vapo bearing with MS is capable of operating at temperature even over 70℃.