Do you know what are the commonly used bearing a cooling fan?

Cooling fan of the commonly used bearings include: ball bearing, oil bearing.

oil bearing, bearing ( SleeveBearing) Is the use of sliding friction sleeve bearing, using oil as a lubricant and drag reduction agent. Is now one of the most common bearing technology on the market, due to low cost, simple manufacturing, many products including well-known brands are still continue to use. Its advantage is the early use of quiet, low noise, low price.

ball bearing, ball bearing, 滚珠轴承) Change the way the bearing friction, the use of rolling friction, there are some among two hoop steel or steel columns, supplemented by some grease lubrication. The way is more effective in reducing the friction between the bearing surface phenomenon, effectively improve the service life of the fan bearing, and so will the heat radiator is reduced, prolong service life. The downside is that technology is more complex, lead to cost increase, at the same time also bring higher noise.

the working principle of the cooling fan is implemented according to the energy conversion, the circuit principle generally divided into a variety of forms, the circuit is different, the performance of the fan will have difference.