What is a motor without a fan?

Motors without fans generally refer to brushless motors. Different from the traditional brushless motor, brushless motor is equipped with magnets on the rotor surface. Through the adjustment of electronic controller, the rotor magnetic field can be synchronized with the stator magnetic field, thus completing the task of rotor rotation quickly and efficiently. Compared with brushless motor, the manufacturing process of brushless motor is more complicated and the cost is higher, but the brushless motor has better durability, lower noise and higher efficiency. Therefore, brushless motors are widely used in fields that need stable, efficient and low noise operation.