How To Distinguish The Quality Of A DC Fan

Many people do not know how to choose a DC fan supplier. Generally speaking, quality is measured only by price. Actually, this standard is incorrect, so how can we distinguish the quality of a DC fan? Let's follow the editor to learn more!
The same speed, voltage, and air volume. A small current DC fan is preferred. A DC fan with the same speed, same voltage, and lower noise has better performance, as 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, and the lifespan of bearings and shafts is longer, and the lifespan of DC fans is also longer.
For fans of the same specification and speed, a DC fan with low vibration is preferred. The DC fan is a high-speed component, so there must be vibration. No DC fan manufacturer can guarantee the absence of vibration. If the manufacturer tells you that their product does not vibrate, it 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.