Explanation of terms of the hottest bearing form

Explanation of bearing form terms

bearing form refers to the bearing type used by the air-cooled radiator fan. In mechanical engineering, there are many types of bearings, but there are only three types of bearings used in radiator products according to their basic working principles: sleeve bearing using sliding friction and ball bearing using rolling friction, as well as a mixture of the two types of bearings. In recent years, the new technologies introduced by major radiator manufacturers in bearings, such as magnetic levitation bearings, fluid protection system bearings, hydraulic bearings, Laifu bearings, nano ceramic bearings, are also improved from the above basic bearing forms, and the basic working principle has not changed

sleeve bearing is a sleeve bearing using sliding friction. It uses lubricating oil as lubricant and drag reducer. In the initial use, it has low running noise and low manufacturing cost, but this bearing is seriously worn and has a great gap in service life compared with ball bearings. Moreover, this kind of bearing has been used for a long time. Due to the reason of oil seal (it is impossible to use high-grade oil seal for computer radiator products, which generally realizes the new product order of 7000 tons. It is an ordinary paper oil seal), the lubricating oil will gradually volatilize, and the dust will also enter the bearing, which will cause problems such as slow fan speed, increased noise, and serious vibration caused by fan eccentricity due to bearing wear. In case of these phenomena, either open the oil seal to refuel, or only eliminate and purchase new fans

single ball bearing (1 ball+1 sleeve bearing) is an improvement on the traditional oil bearing. It adopts the form of sliding friction and rolling friction. In fact, it uses a ball bearing with an oil bearing to reduce the cost of double ball bearings. Its rotor and stator are lubricated with balls and equipped with lubricating oil. It overcomes the problems of short service life and unstable operation of oil bearing, and the cost rise is extremely limited. The 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 operating noise increases after adding the ball, but it is still smaller than the double ball bearing

2 ball bearing is a relatively high-grade bearing. It adopts the form of rolling friction and adopts two ball bearings. Several tiny steel balls in the bearing revolve around the axis. When the fan leaf or axis rotates, the steel balls rotate with it. Because they are all spheres, the friction is small and there is no problem of oil leakage. The advantage of double ball bearing is that its service life is very long, about hours; What are the characteristics of anti-aging spring testing machines? Good, suitable for fans with high speed. The disadvantage of double ball bearings is high manufacturing cost and the highest noise at the same speed level. Double ball air bearings and hydraulic bearings have good sealing performance, especially double ball bearings. The double ball bearing is completely embedded in the fan, and the rotating part is not in direct contact with the outside world. In a sealed environment, the working environment of the bearing is relatively stable. Therefore, almost all 5000 rpm large-diameter fans use double ball bearings. The hydraulic bearing has a unique return oil circuit, so the possibility of lubricating oil leakage is small

the representative manufacturer of rifle bearing technology is CoolerMaster. At present, CoolerMaster has upgraded most of its traditional oil bearing fans to rifle bearings. As an improvement of the traditional oil bearing, Laifu bearing is made of wear-resistant materials into a high oil content hollow bearing, which reduces the friction between the bearing and the shaft core. Laifu bearing also has a shaft core with reverse spiral groove and oil retaining groove. When the fan is running, the oil will form a reverse backflow, so as to avoid the loss of oil, so as to improve the service life of the bearing. By adopting the above structures and parts, the oil containing and oil retaining capacity of Laifu bearing fan is greatly improved, and the noise is reduced

the name of hydro bearing comes from hy (hydrodynamic wave) pro (oil protection system). It is a patented product of ADDA, a well-known radiator and fan design and manufacturer. It is also made by many improvements on the basis of traditional oil bearing. The bearing of fluid protection system and hydraulic bearing can be said to have the same goal by different ways. The two designs have adopted some unique improvement measures respectively, but the essence is the circulating oil circuit system, and the performance in all aspects is basically the same. Generally, the service life of the product can reach more than 50000 hours

hydraulic bearing is a technology pioneered by AVC and improved on the basis of oil bearing. The hydraulic bearing has larger oil storage space than the oil bearing, and has a unique loopback oil supply circuit. The working noise of the hydraulic bearing fan has been significantly reduced, and the service life is also very long, which can reach 40000 hours. The hydraulic bearing is still essentially an oil bearing. However, after improvement, the service life of this kind of bearing is much longer than that of ordinary oil seal bearing, and it inherits the advantages of oil bearing with low running noise. At present, hydraulic bearings have been used in AVC radiators, but not all AVC radiators use hydraulic bearing fans

vapo bearing is improved by Sunon's magnetic levitation technology, which is to strengthen the hardness of the shaft sleeve of the oil bearing, and use special materials, and its inner surface is also specially processed, so as to overcome the shortcomings of the oil bearing that is not resistant to high temperature, and then cooperate with the magnetic levitation technology to greatly extend the service life

the motor of magnetic bearing has magnetic system (MS) design, and its magnetic induction line is perpendicular to the magnetic levitation line, so the shaft core is parallel to the magnetic levitation line, so the weight of the rotor is fixed on the running track, and the almost unloaded shaft core is used to support in the direction of the anti magnetic levitation line, forming the whole rotor suspended on the fixed running track. Therefore, magnetic levitation is actually only an auxiliary function, not an independent bearing form. The specific application has to cooperate with other bearing forms, such as magnetic levitation + ball bearing, magnetic levitation + oil bearing, magnetic levitation + vaporization bearing, etc. This technology has not been recognized by European and American countries

nano ceramic bearing includes many small places and large structures (nano ceramic bearing, NCB). In essence, it is still an oil bearing, which was first introduced by Foxconn in its products. The traditional oil bearing fan is seriously worn in the process of use, and its reliability is low when it is used for a long time. Nano bearing effectively overcomes this problem: ceramic bearing technology adopts special polymer materials and special additives to fully integrate, the bearing core is fully made of special white oxide materials, and is made by stamping and sintering process. The crystal particles are reduced from the past 60um to 0.3um, which has the characteristics of firmness, smoothness, wear resistance and so on. Nano ceramic bearings have strong high temperature resistance and are not easy to volatilize, which greatly extends the service life of fans. The properties of nano bearings are similar to ceramics, and the more they are ground, the smoother they become. According to the test, the average service life of fans with nano ceramic bearings is more than 150000 hours. In fact, this technology is not a real nanotechnology, and the materials used are not real nanoscale materials, but the words like nano are used to attract eyeballs