Many people do not know how to choose when choosing a DC fan supplier. Generally speaking, they just find a few manufacturers at random, get the samples back, and try to turn them around. If there is a manufacturer whose goods are cheap, they choose this one as the supplier, and only use price as a measure of quality. In fact, this standard is wrong, so how to distinguish between good and bad DC fans?

 

DC fan

The same speed, the same voltage, and the same air volume. A small current DC fan is better. The effect of a DC fan with the same speed, the same voltage, and the smaller the noise is, the better, because the low noise is mainly related to the fan blades, bearings, oil, assembly structure, etc. If the noise is low, it means that the friction is small, the life of the bearing and the shaft is long, and the life of the DC fan is also long.

 

DC fan

For fans of the same specification and speed, a DC fan with low vibration is better. The DC fan is a high-speed component, so there must be vibration. No DC fan manufacturer can guarantee that there will be no vibration. If the manufacturer tells you that their product does not vibrate, that is a lie. Don't believe it. The smaller the vibration, the better. The smaller the vibration, the more stable the fan, the smaller the loss of bearings and shaft cores, the less oil volatilization or ball wear, and the longer the service life.