How to check the quality of axial cooling fans?

1. Observe the appearance, whether the frame and fan blades have burrs or not, because the quality of the mold can best reflect whether the manufacturer has made the product carefully. The price of good molds is not low. The surface of the frame and fan blades is not smooth, which will affect the air duct, causing operation shaking and noise.
2. Rotate the fan blades to check whether the fan blades shake for no reason. Rotate to observe the dynamic balance of the fan blades and whether there is eccentric rotation. This step is to check the bearing materials. Commonly used bearings are oil-containing bearings and ball bearings. Ball bearings have a long life but are more expensive.
3. Check the wires. Pinch the wires with your fingernails. If the wires are not tough, they will not recover slowly or deform directly after pinching. The wires may not be very good. Observe whether the wire connection is fully soldered. If it is a cooling fan with waterproof function, it is necessary to check the waterproof sealing. The quality of the cooling fan is mainly reflected in the quality. A good cooling fan has the characteristics of long life, stable operation, small jitter, no noise, etc. It is suitable for use in smart devices, precision equipment, military equipment, aviation transportation equipment, etc. A good cooling fan needs to be carefully selected from the design and materials. The aspects involved include wires, frame blades, coil materials, magnets, bearings, and the materials vary greatly. The price of a good cooling fan must not be too low. A bad cooling fan is also understood as a cooling fan of poor quality. Cheap materials are used in all aspects. Once a poor quality cooling fan is loaded for a long time, it is very likely to burn the equipment directly. It has poor stability, short life, and is easy to produce noise. How to distinguish the quality of the cooling fan.

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