The difference between double ball bearing cooling fan and oil bearing

Customers who have not learned about cooling fans in detail before may not be able to make a choice when the cooling fan manufacturer tells him that the oil bearing is the double ball bearing. What is the difference between these two bearings? The oil-impregnated bearing type cooling fan simply means that the bearing is made of copper. The precision of this material is not very good. In the early stage, because of the effect of lubricating grease, the sound is better, but with the increase of time, the amount of oil gradually changes The fan blade shaft core running at high speed is prone to friction with the bearing to produce noise, especially the oil-bearing cooling fan that has been used for a long time under the high temperature ring mirror, the noise will appear earlier. Therefore, it is aimed at medical equipment and industrial equipment. For products with long-term uninterrupted use and products with relatively high requirements for quietness, oil-bearing cooling fans are generally not used. Its characteristic is that the price is cheap, and it is not suitable for the use of double-ball bearing cooling fans at high temperatures. It is a spring with a steel ball at each end, and the spring is tightly topped. There are several small balls in the ball. When the cooling fan is running, a few small beads rotate in it. Because the steel balls have high precision, except for the sound of a little ball, there is almost no possibility of quality variation after long-term use, even if it is used in a high temperature environment. The last 3 years were no problem. In addition, for some moving and rotating products, this tightly matched double ball bearing structure is generally adopted. The cooling fan is more reliable, but the cost is higher. As mentioned above, whether it is an oil bearing or a double ball bearing, each has its own characteristics. For different types of quality, the quality of the bearing itself has a great influence on the cooling fan, so this is also very important. Welcome to the heat dissipation classroom and news center of the cooling fan manufacturer again. The copyright belongs to the cooling fan manufacturer and represents only personal opinions. Please do not reprint the whole article. Any violation will be held for legal responsibility. If you need to know more about the cooling fan manufacturer's product introduction, please Click Product Center