The fan we use in our daily life affects the air movement by driving the fan blades to rotate through the motor. Generally speaking, brushless motors are mostly used for fan motors. As fans need to run for a long time, as long as brushless motors can meet this request, brushed DC motors cannot meet this request, so brushless motors are the most widely used fan motors.
But for some small fans, micro brush DC motor can also be very good to meet the application requirements, such as hand-held small fan motor, usb fan motor can use brush micro DC motor. The speed regulation of micro brushed DC motor is simple, unlike brushless motor. In addition, the cost of brush micro DC motor is low, and the price of hand-held small fan is not high. Therefore, brush DC motor is widely used in hand-held small fan and office USB fan.
Although it is better to use brushless power, due to cost considerations, few people use brushless motors on small fans. Due to the high cost, the price of products will also improve. Moreover, like USB small fan products, the gap between brush and brushless motors will not be too large. Basically, it is an element of service life. The wear life of brush motors with carbon brushes is lower than that of brushless motors. However, for micro and small products, these can be neglected.
Hand-held small fan/usb fan brush motor is recommended to use 020 micro DC motor, 140 micro DC motor or 370 micro motor. These are all round motors, which are relatively small in size and light in weight. They are very suitable for small fan products. This type of micro motor is also widely used in the market. However, 370 micro motor is slightly larger in size and USB fan can be used, if you hold a small fan, you can think about using 020 and 140 motors. There are also relatively popular bladeless fans that can also use 020 or 370 micro motors. Of course, as long as small bladeless fans are applicable, if they are relatively large fans, choose fan motors or think about brushless motors. Therefore, when we choose a small fan motor, we do not necessarily only think about brushless motors, but sometimes brush DC motors can also meet all aspects of demand.