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CPU Fan Bearing Types

The bearings used in CPU fan are, oil bearing, hydraulic bearing, alloy bearing, double ball bearing, rifling bearing

● Single Ball Bearing

Single Ball Bearing is an improvement of the traditional oil-sealed bearing. It is lubricated with ball between rotor and stator with lubricating oil. It overcomes the short life and unstable operation of oil-sealed bearings with extremely limited cost increase. The single ball bearing absorbs the advantages of oil-sealed bearings and double ball bearings. The life of the bearing is increased to 40,000 hours. After adding the ball, the running noise increases, but it is still less than that of the double ball bearing.

● Rifle Bearings

Rifle bearing technology is represented by CoolerMaster, which has upgraded most of its traditional oil-sealed bearing fans to Rifle bearings.

As an improvement to the traditional oil-sealed bearings, Raffle bearings are made of wear-resistant materials with high oil-containing hollow bearings, which reduce the friction between the bearings and the core, and the Raffle bearings also have a core with reverse helical grooves and oil-retaining grooves, so that the oil-containing will form a reverse backward flow when the fan is running to avoid the loss of oil-containing, and therefore increase the life of the bearings. By adopting the above structure and parts, Raffle bearing fan can greatly improve the oil content and oil retention capacity, and reduce the noise.

●Double Ball Bearing

Double ball bearing belongs to the higher grade bearings. The bearing has several tiny steel balls around the center of the shaft, and when the fan page or the center of the shaft rotates, the steel balls will follow the rotation. Because they are all balls, there is less friction and no oil leakage. The advantages of double ball fans are longer life, about 40,000 ~ 55,000 hours; good anti-aging performance, suitable for