First, let's talk about "220V Cooling Fan" bearings. Fan bearings can say is the biggest factor in determining the performance of the fan is the most important factor in the decision fan grade. Our main weakness is a fan-made on the bearing, "220V Cooling Fan" in addition to bearing bad will bring a lot of noise outside, but also lead to greater heat and balancing. At present, this is actually a computer fan bearings are mainly divided into two categories: oil shafts, ball. Of course, I put two kinds of bearing "220V Cooling Fan" raised not want to tell everyone who is good and who's bad, because first of all I want to tell you that no matter what kind of bearing, there will be a very good representative of the product, of course, each have their own shortcomings, it can not be denied.