Why do most brushless motors not use ferrite magnets?

In a brushless motor, there are no carbon brushes, as opposed to brushed, so the magnets of a brushless motor become the rotor.

Brushless motor, especially the model world brushless motor, almost 100% of the strong magnets with Min iron boron mainly because the lock iron boron magnetic force is strong, the power of the motor is closely related to the performance of the magnet, the volume and grade of the magnet determines the maximum power of the motor.

Brushless motor is a new type of motor, also known as permanent magnet synchronous motor. Compared with the traditional brushed DC motor, brushless motor adopts the method of mutual conversion of DC and AC energy, and uses permanent magnets instead of traditional brushes with wear and tear phenomenon. Therefore, brushless motors run smoothly, with low noise, high efficiency and long life, and are widely used in various electric tools, household appliances, automotive electronics and model aircrafts.

Brushless motor adopts electronic speed control technology, which can automatically adjust the speed according to the change of load and ensure the stability of work efficiency. At the same time, brushless motors also have the advantages of high starting torque, small size, light weight, long life and low energy consumption, which are very suitable for various applications that require high efficiency motors.

We all know that the low performance of ferrite, low performance leads to low motor power, so the use of very little, which is also the reason why many friends ask brushless motors do not use ferrite material magnets.
Brushless motor usually choose sintered Chin iron boron (tile) material, bonded dun iron boron (ring) material, brushless motor with magnetic tile as a stator, generally more than 6 poles, but the magnetic tile as a brushless motor turned, can have more than 4, 6 poles brushless motor ring diameter is generally greater than 20, the number of magnetized poles between 4-12 poles, and its police thickness more than 1.5-5.0 between.