Electric tools generally use brushed motors, can t they use brushless motors?

Electric tools generally use brushed motors, can t they use brushless motors?

Electric tools typically use both brushed motors and brushless motors, each with specific applications and advantages.

Brushed motors are the traditional type of electric motor, consisting of a rotating rotor and a stationary stator. The stator has a pair of carbon brushes that make contact with the electrodes on the rotor, conducting electricity and changing the direction of the current to make the rotor rotate. The advantages of brushed motors include their simple structure, lower cost, and high starting torque. This makes them suitable for certain applications such as small household electric tools like electric razors and toothbrushes.

However, brushless motors have several advantages over brushed motors and are increasingly used in many applications. Brushless motors do not have brushes on the rotor. Instead, they use permanent magnets or electronic control to generate a magnetic field and rely on sensors to determine the rotor position. Here are some advantages of brushless motors:

• Efficiency: Brushless motors typically have higher efficiency compared to brushed motors. Since brushless motors do not have brush friction and energy losses, they can convert electrical energy into mechanical energy more effectively, resulting in longer battery life and extended operating time.
• High power density: Brushless motors have a higher power density, meaning they can provide greater power output, making them suitable for applications that require higher performance.
• Reduced maintenance: Brushless motors have fewer maintenance issues because they lack brushes. This makes them more reliable and requires less maintenance related to brush wear, replacement, and upkeep.
• Wider speed range: Brushless motors can typically operate over a wider speed range, making them more versatile in applications that require precise speed control.

While brushless motors offer many advantages, they are generally more expensive to manufacture. Therefore, in some smaller, simpler, and cost-effective electric tools, brushed motors are still used. However, as technology advances and costs decrease, brushless motors are becoming increasingly common in many electric tools.