Compared with roller bearings, VIIPLUS fan bearings have such advantages: simple construction, low failure rate, easy maintenance, reliable operation, low noise, and low cost. On the contrary, if you use ball bearings, the only benefit is that the initial operation is slightly power-saving, but there are many disadvantages.
The first is the high cost. The installation of roller bearings requires precision machining of the mounting area, and the cost of the bearings themselves is high.
The second is poor reliability. Roller bearings do not allow dust to enter the gap, otherwise, it will seriously affect the operating life.
The third is poor maintainability. Once the ball bearing is damaged, the replacement needs special tools, the installation process requirements are also high, time-consuming, and laborious.
The fourth is the noise. Ball-bearing use of time to generate clearance after the noise will greatly increase, unbearable.
In general, the fan bearing uses plain bearings, the advantages are far greater than the use of ball bearings. A good fan, using powder metallurgy technology sliding bearings has been very perfect. As for the low life of some fans, it has a lot to do with the lack of timely maintenance, no matter what bearings are used, such high-speed rotation of the product, is in need of regular maintenance.