K9203 996920302  HIMA 散热风扇

产品细节：K9203 996920302  HIMA 散热风扇

K9203A 996920360

intro
Common bearings of cooling fans are: ball bearings, oil bearings, magnetic bearings.
Ball bearing
Ball Bearing (Ball Bearing) changes the friction of the bearing, the use of rolling friction, two iron rings in the middle of some steel balls or steel columns, and supplemented by some grease lubrication. This method more effectively reduces the friction between the bearing surfaces, effectively improves the service life of the fan bearing, and therefore reduces the heat generation of the radiator and extends the service life. The disadvantage is that the process is more complex, resulting in higher costs, but also bring higher working noise.
Oil bearing
Sleeve Bearing is a sleeve bearing that uses sliding friction and uses lubricating oil as a lubricant and drag reducer. Can be said to be one of the most common bearing technology on the market, due to low cost, simple manufacturing, many products including well-known brands are still in use. Its advantages are quiet, low noise and cheap in the initial use.
Magnetic suspension bearing
Magnetic Bearing motor adopts Magnetic System (MS) design, is the use of magnetic force to suspend the rotor in the air, so that there is no mechanical contact between the rotor and the stator. The principle is that the magnetic induction line is perpendicular to the maglev line, and the shaft core is parallel to the maglev line, so the weight of the rotor is fixed on the running track, and the axial core is almost load-free to the direction of the maglev line, forming the whole rotor suspended on the fixed running track. Compared with traditional ball bearings and oil-bearing, magnetic bearings do not have mechanical contact, the rotor can run to a very high speed, with low mechanical wear, low energy consumption, low noise, long life, no lubrication, no oil pollution and other advantages, especially suitable for high-speed, vacuum, ultra-clean and other special environments. Magnetic levitation is in fact only an auxiliary function, not an independent bearing form, the specific application must also be combined with other bearing forms, such as magnetic levitation + ball bearing, magnetic levitation + oil bearing, magnetic levitation + vaporized bearing and so on.

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