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.
Entire weight of rotor is completely
suspended by magnetic force in any
mounted position, keeping the rotor
rotating evenly around a fixed axis, while
maintaining a fixed distance from inner
surface of the bearing. No more friction
or and noise.
Oil ring, washer, and lubricant are no
longer used in MagLev structure. Hence
no more oil leakage or stuck rotor
problems.
The dust cap of Sunon MagLev motor fan
not only prevents dust from penetrating
into bearing and mixing with nitride
particles to clog the motor, which may
result in noise and slower motor
operation, but it also retains the oil in the
system and keeps the motor running
smoothly for extended operation.
MagLev design allows an operating
temperature higher than 700C.
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