Detailed explanation of types of brushless motors for electric tools.
There are various types of brushless motors in electric tools, including outer rotor brushless motors, inner rotor brushless motors, axial magnetic field brushless motors, etc. These motors each have their own characteristics and are suitable for different electric tools.
In the field of electric tools, brushless motors have gradually become the mainstream power choice due to their advantages of high efficiency, durability, and low noise. So, how many types of brushless motors are there in electric tools? Next, we will provide you with a detailed introduction to several common brushless motors.
1、 External rotor brushless motor
External rotor brushless motor is the most common type of brushless motor in electric tools. Its main feature is that the rotor is on the outside and the stator is on the inside, which makes the motor have a high torque density and low moment of inertia. External rotor brushless motors are suitable for electric tools that require high torque and fast response, such as drills, hammers, etc.
2、 Internal rotor brushless motor
The inner rotor brushless motor is opposite to the outer rotor brushless motor, with the rotor inside and the stator outside. This structure enables the motor to have higher rotational speed and lower torque density. The internal rotor brushless motor is suitable for electric tools that require high-speed operation and light load, such as electric mills, cutting machines, etc.
3、 Axial magnetic field brushless motor
Axial magnetic field brushless motor is a relatively new brushless motor technology, whose magnetic field direction is perpendicular to the axis of the motor. This structure enables the motor to have a high power density and a low volume, making it suitable for use in electric tools with strict space requirements, such as wireless electric screwdrivers, handheld electric saws, etc.
In addition to the three common types of brushless motors mentioned above, there are also some other types of brushless motors, such as flat brushless motors, multiphase brushless motors, etc. These motors each have their own characteristics and are suitable for different application scenarios.
In short, there are various types of brushless motors in electric tools, each with its unique characteristics and applicable scenarios. When choosing electric tools, we can choose the appropriate type of brushless motor based on specific needs to achieve better performance.
