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The  Sunon patented MagLev  design is based on magnetic principles  and forces  that  not only propel the fan but  also 
ensure stable rotation over  its entire 360 degrees of movement.  Utilizing the attraction  of the magnetic levitation force, 
MagLev eliminates the wobbling and shaking problems of traditional motor fans. With this new technology, the MagLev fan 
propeller is suspended in air during rotation so that the shaft and bearing do not come into direct contact with each other to 
create friction. These features result in a fan with 
low acoustic noise level
high-temeperature endurance
, and 
longer 
lifespan
.
about 
Sunon MagLev
SUNON MagLev prevents the defects of conventional fans
Sunon MagLev Solution
Deficiencies of 
Traditional Motors
Sleeve Bearing
Ball Bearing
Weight of rotor is entirely loaded on to the 
shaft. Abrasive rotation between shaft and 
bearing will result in an irregular and rough 
surface on the inner surface of bearing bore. 
The fan motor rotation becomes uneven and 
in turn, causes operational noise and shortens 
fan life. 
The oil ring and mylar washer not only results 
in added friction area but also blocks the 
heated air, which, if not released before 
solidification, would become nitride particles 
that clog up in the gap between shaft and 
bearing bore, then causing a much slower 
rotation of rotor and noise. 
The entire weight of the rotor is 
completely attracted by the magnetic 
force in any mounted position, keeping 
the motor rotating evenly at a fixed point 
in a consistent distance from the inner 
surface of the bearing. No more 
traditional rubs and noise will occur. 
The oil rings, the washers are no longer 
used in MagLev structure. 
For customized use, MagLev design 
allows an operating temperature higher 
than 70
0
C.
When the fan motor is operating, the steel 
balls inside will generate a higher rotational 
noise than that of a sleeve bearing. 
The construction of Ball bearings is quite 
weak and unable to absorb external impact. 
The bearings can be easily damaged, causing 
louder rotational noise. 
Comparison between MagLev and General Motor Fans
2 factors: 
the magnet and the stator
The resulting interaction between the maglev 
plate and the magnet pulls the rotor downward 
along the entire 360-degree surface. Due to the 
lower center of gravity, the rotor runs in a more 
stable consistent orbit.
The general fan utilizes a deviating magnetic 
center to attract the rotor downward. This 
technology causes the rotor to vibrate violently, 
due to the lack of a consistent orbit as well as a 
deviation of the magnetic center.
(A) Sunon MagLev Fan
the center of
gravity is lower
maglev 
plate
stator
(B) General Fan
the center of
gravity is higher
stator
Possesses 3 important factors:
the maglev plate, the magnet and the stator
magnet
magnet
02
MagLev