QITE BEARING：What is the principle of hydraulic bearing?

The bearing of the fan is the "heart" of the radiator. At present, hydraulic (oil-bearing), single ball bearing and double ball bearing are more common.

The hydraulic fan mainly contains oil in the inner layer, which belongs to sliding friction. Once the oil is consumed, the heat dissipation effect is very poor, the speed is significantly reduced, and there is noise. The service life of this fan is relatively short, which is directly proportional to its low price. However, the service life of the new generation of hydraulic bearings has been greatly improved through self oiling technology, which can basically reach more than 30000 hours, which can meet the needs of most applications. This kind of bearing is usually used for radiators within 100 yuan.

The ball fan has one / two ball bearings in the inner layer, which belongs to rolling friction. This design has small friction coefficient and high speed, so it can bring better heat dissipation effect. In addition, the loss is small and the service life is longer. There are often products with a service life of 150000 hours. Of course, the price is also higher, and the noise is not as good as hydraulic bearings. This kind of bearing is usually used for radiators above 100 yuan.

The oil bearing used in low-end products is made of porous metal materials, which can absorb and conserve lubricating oil and reduce wear. This process has low cost and the maximum service life is about 30000 hours. After the service life, with the falling dust and volatilization of oil agent, the bearing noise will increase and the fan speed will slow down. Single ball bearing consists of ball bearing and oil bearing. This technology is mature, and the difficulty is to ensure that the two bearings are coaxial. The service life of the fan is generally more than 40000 hours. Due to its good noise control and heat dissipation efficiency, this kind of bearing has always occupied the absolute advantage of the radiator market. The double ball bearing also improves the service life of the product to 150000 hours. And with the running in of the ball and bearing, the large noise during initial use will be gradually reduced, showing its excellent heat dissipation performance.