Introduction to different bearings of cooling fan

1，Rolling bearings can be categorized into point-contact rolling bearings, such as ball bearings. These types of bearings are capable of withstanding radial loads, thrust loads, or a combination of both.

The other type is line contact rolling bearings, such as cylindrical roller bearings, which are capable of withstanding significantly higher radial loads.

2，Preloading of Ball Bearings:

When a ball bearing is in operation, there exists clearance between the balls, inner ring, outer ring, and upper/lower separator within the internal space. In the absence of external force, this clearance allows the balls to operate in free space, leading to irregular phenomena such as impacts and noise. To eliminate these impacts and other irregularities, an axial force is applied to the ball bearing to reduce the axial clearance, thereby minimizing noise.

3, sliding contact bearing

Sliding contact bearings used in information products are oil-bearing self-moistening bearings, generally porous oil-bearing self-moistening bearings. It uses powder metallurgy technology to forge metal or non-metal micro-powder material to become a bearing with a discontinuous shape. The bearing is filled with fluid with lubricating properties, and the oil content is between 15% and 25%.