How Many Kinds Of Fan Bearings Are There?

In mechanical engineering, there are many types of bearings, but there are only a few types used in radiator products: the use of sliding friction sleeve bearings and the use of rolling friction ball bearings and two kinds of bearing forms mixed these three. In recent years, the major radiator manufacturers have introduced new technologies in bearings, such as magnetic floating bearings, water wave bearings, magnetic core bearings, lyft bearings, etc., are also improved on the basic form of bearings above, the operating principle is still unchanged.

Bearing type:

Bearing type refers to the bearing type used by air-cooled radiator fans. In mechanical engineering, there are many types of bearings, but the Bearing forms used in radiator products are classified according to their basic working principle into three kinds: Sleeve bearings with sliding friction and Ball bearings with rolling friction, as well as the three kinds of mixed Bearing forms. In recent years, the major radiator manufacturers have introduced new technologies in bearings, such as magnetic floating bearings, fluid protection system bearings, hydraulic bearings, ford bearings, nano ceramic bearings, etc., are also improved on these basic bearing forms, the basic working principle is still unchanged.

Sleeve Bearing:

 Sleeve Bearing is the use of sliding friction Sleeve bearings, the use of lubricating oil as lubricant and drag reduction agent, the initial use of low noise, low manufacturing cost, but this kind of Bearing wear serious, life than ball bearings have a big gap. And this kind of bearing with long time, because of the reason of the oil seal (computer radiator products can’t use high-grade oil seal, oil seal is the ordinary paper), lubricating oil will gradually evaporate, and dust will enter the bearing, leading to a fan speed slow, increase the problems such as noise, serious still can because the bearing wear caused fan eccentric caused violent vibration. These phenomena, or open the oil seal refueling, or only out of the purchase of a new fan.

1 Ball+1 Sleeve Bearing:

1 Ball+1 Sleeve Bearing is an improvement on the traditional oil-bearing. It adopts the form of sliding friction and rolling friction mixture. In fact, a Ball Bearing is used to match an oil-bearing to reduce the cost of double Ball bearings. It overcomes the problems of short life and unstable operation of oil-bearing with very limited cost increase. Single ball bearing absorbs the advantages of oil-bearing and double ball bearing, and improves the service life of the bearing to 40000 hours. The disadvantage is that the running noise increases after the addition of ball bearings, but it is still less than double ball bearings.

Double ball bearing:

Double Ball bearings belong to more high-grade bearings, using the form of rolling friction, the use of two Ball bearings, bearings in a number of tiny steel balls around the axis, when the fan page or axis rotation, the Ball is followed by rotation. Because they are spheres, there is less friction and there is no problem with oil leakage. The advantage of double ball bearings is very long life, about 50,000-100000 hours; Good aging resistance, suitable for high speed fans. The disadvantages of double ball bearings are that they are expensive to manufacture and make the most noise at the same speed level. Double ball bearings and hydraulic bearings have better sealing, especially double ball bearings. The double ball bearings are completely embedded in the fan, and the rotating part has no direct contact with the outside world. In a sealed environment, the working environment of bearings is relatively stable. Therefore, 5000 RPM large diameter fans almost all use double ball bearings.

Rifle Bearing:

Rifle Bearing technology is represented by CoolerMaster, which has upgraded most of its traditional oil-bearing fans to Rifle bearings. Million-member as the improvement of traditional oil bearing, bearing adopts hollow high wear-resisting material, oil bearing, reduce the friction between bearing and shaft core, rifles with reverse spiral groove bearings and gear oil groove of the shaft core, oil will form a reverse migration when the fan is running, so as to avoid loss of oil, thus improve the bearing life. By using the above structure and parts, the oil bearing fan greatly improves the oil bearing capacity and reduces the noise.

Hypro Bearing:

Hypro Bearing its name comes from HY(Hydrodynamic wave, Hydrodynamic wave)PRO(Oil protection system, Oil protection system), is a well-known radiator and fan design manufacturer ADDA patent products, It is also based on a number of improvements on the basis of traditional oil-bearing. Fluid protection system bearings and hydraulic bearings can be described as the same path, the two designs respectively use some unique improvement measures, but the essence of the same circulation oil system, the performance of all aspects is basically similar. Usually the product life can reach more than 50000 hours.

Hydraulic Bearing

Hydraulic Bearing is a technology pioneered by AVC, which is improved on the basis of oil-bearing. Hydraulic bearings have larger oil storage space than oil-bearing bearings, and a unique loop type oil supply loop. The working noise of hydraulic bearing fans is significantly reduced, and the service life is also very long, which can reach 40,000 hours. Hydraulic bearing is still a kind of oil bearing in essence. But this has been improved, the service life is greatly extended than ordinary oil seal bearings, and inherited the advantages of oil-bearing – low noise operation. Hydraulic bearings have been used in AVC radiators, but not all AVC radiators use hydraulic bearing fans.

VAPO Bearing:

VAPO Bearing is improved by Sunon magnetic levitation technology, is to strengthen the sleeve hardness of oil-bearing, and the use of special materials, the inner surface is also through special processing, so as to overcome the shortcomings of oil-bearing high temperature resistance, and magnetic levitation technology, greatly extend the service life.

Magnetic Bearing:

Magnetic Bearing motor Magnetic levitation (Magnetic System, MS) design, the Magnetic induction line and Magnetic floating line into vertical, so the shaft core and Magnetic floating line is parallel, so the weight of the rotor is fixed on the running track, using almost no load of the shaft core to anti Magnetic floating line direction support, Forming the whole rotor suspended in the fixed running track. Therefore, magnetic levitation is in fact only an auxiliary function, not an independent bearing form, specific application has to cooperate with other bearing forms, such as magnetic levitation + ball bearing, magnetic levitation + oil-bearing, magnetic levitation + vaporized bearing and so on. The technology has not been accepted in Europe or the United States.

NANO Ceramic Bearing:

NANO Ceramic Bearing (NCB) is still an oil Bearing in nature, which was first introduced by Foxconn in its products. Traditional oil-bearing fans wear badly in the process of use and have low reliability when used for a long time. Nano bearing effectively overcome the problem: ceramic bearing technology adopted special macromolecule material with special additives to fully mix, bearing the core we use special dioxide comprehensive materials, made use of punching die and sintering process, crystal particles by past 60 dropped to 0.3 um um, solid, smooth, wear-resisting and so on characteristics. Nano-ceramic bearings have strong high temperature resistance and are not easy to volatilize, which greatly extends the service life of the fan. The properties of nano-ceramic bearings are similar to those of ceramics, and the more polished they are, the smoother they will be. According to tests, the average service life of fans using nano ceramic bearings is more than 150,000 hours. The technology is not really nanotechnology, and the materials used are not really nanoscale materials, just the word nano to catch the eye.