MagLev System from Sunon

When motor with the MagLev technology is in operation, the magnetic force between the permanent magnet in the hub and the magnetic plate mounted on the PCB helps to attract the impeller rotor towards the end point of shaft. The weight of the rotor is entirely neutralized by the magnetic force and enables the shaft to turn without being affected by the gravity.

In this way, a constant distance between bearing and shaft is maintained naturally without causing any contact between the two surfaces. Therefore, when the fan is operating, the highly balanced rotor assembly rotates in nearly a perfect circular motion in a consistent orbit. The center of rotation of the rotor shaft is the true centerline of the shaft and the bearing assembly.

This phenomenon eliminates any rotational vibration and abrasions between the shaft and the inner surface of the bearing even in any mounted position.

Accordingly, MagLev system creates unprecedented vibration-free and, therefore, noise-free operating conditions for the fan. It is of particular interest to both the PC and IT sectors of industry for thermal management control. Because the shaft rotates evenly in a constant orbit and the rotor is held at a fixed centerline of rotation, no contact occured. No matter how the fan is mounted, during operation there is no friction or noise, and no slanting or wobbling. Which means the bearing life is greatly extended.