The application of brushless motors not only increases the power of cordless power tools but also extends their service life. With these motors, users have little to no maintenance to worry about. The advantages of brushless motor technology are numerous. The absence of brushes eliminates the problems associated with overheating and failure. Therefore the service life of brushless motors is only related to the bearings. Brushless motors are more compact than brushed motors and weigh two to three times less than brushed motors. In addition to reducing vibration and noise, this improves portability.
Electronic commutation allows for precise positioning. The motor achieves speeds of up to 50,000 rpm with an optimally balanced rotor. The electronic module offers greater flexibility and a wider range of variation, especially in maintaining torque from the start. The brushless motor has no friction between the rotor and stator, resulting in a significant increase in efficiency. Heat and friction are reduced while optimizing battery energy. This can increase power and autonomy by up to 25 percent compared to conventional batteries. According to manufacturers, newer generation lithium-ion batteries can provide up to 50% or even 60% more autonomy.
The absence of friction allows the motor to run without sparking even in intensive applications. The brushless technology of brushless motors has no contact zones, which greatly reduces wear and maintenance. This offers several advantages: the motor is more energy efficient, prevents overheating, no brushes need to be replaced and the user enjoys longer battery life.
BLDC motors are electrically commutated by power switches rather than brushes. Compared to a brushed DC motor or induction motor, BLDC motors have a number of advantages.
Brushless DC motors (BLDC) are used for a variety of application needs such as variable load, constant load, and positioning applications in industrial control, automotive, aerospace, automation systems, healthcare equipment, and more.