Ball bearing and oil bearing
Ball bearing changed the bearing friction, rolling friction is adopted, the more effectively reduces the friction phenomenon between the bearing surface, sealed angular contact ball bearing effectively enhance the service life of the fan bearing, and therefore will prolong the service life of the radiator.
The disadvantage is that the process is more complex, resulting in higher cost, but also bring higher working noise.
Oil bearing sleeve bearing is to use sliding sleeve bearings, using oil as a lubricant and drag reduction agent, angular contact thrust ball bearing the initial use of operation low noise, low manufacture cost, but the bearing wear serious, life is ball bearing has a big gap.
