What is Brushless DC Motor & Controller

Brushless DC electric motor (BLDC motors, BL motors) also known as electronically commutated motors (ECMs, EC motors), or synchronous DC motors, are synchronous motors powered by DC electricity via an inverter or switching power supply which produces an AC electric current to drive each phase of the motor via a closed loop controller. Because a computer controls the motor instead of mechanical brushes, it’s more precise.

The controller also provides pulses of current to the motor windings that controls the speed and torque of the motor. With the feedback of position sensor, the speed and the torque of the motor can be controlled precisely.

Built for precision, efficiency and reliability, these motors offer the power density needed to deliver top performance in the most compact applications. Available in slotless designs, they provide exceptional acceleration, speed, torque and position control over a long, trouble-free life.

BLDC motors have several advantages. Firstly, relying on Hall effect position sensors for commutation, they are very accurate in motion positioning. And they perform better in the speed/torque tradeoff with their ability to maintain or increase torque at various speeds.

Most importantly, with the brushless structure, the machine can be maintenance free while operating a long lifespan. Benefited from the structure, power loss across the brushes are eliminated and a higher overall efficiency will thus be achieved.

Assun Motor’s brushless dc motor are available in 12 different sizes with diameters of 1632, 1640, 2040, 2453, 2845, 3260, 3270, 3660, 3675, 3690, 4060, and 45100. The first 2 numbers are diameter in mm, the 3rd, 4th or 5th numbers are the length of the motor. Our brushless motors comes with 12, 18, 24, 36 and 48 voltage.

To aid you in selecting the comparable brushless motor model number, the image below will help you to understand better, our motor model type, diameter and length, material, with or with rear shaft voltage and speed.

AssunMotor Model No InfographicAssun Motor’s small brushless DC motors are perfect for your small and mobile devices. Our brushless motors comes with coreless motor technology in-built within allows us to present the following:

– diameter size of 16mm to 45mm.
– length of 32mm to 100mm
– Rated power Output from 3.6W to 250W.
– Load Speed from 3,300 rpm to 30,890 rpm (12 sizes = 72 variation of rpm)
– Stall Torque from 16 mN.m to 10,010 mN.m
– Coreless design
– Long lifespan (up to 10,000 hours)
– low noise
– No maintenance

Our brushless DC motor are best used in the following areas;
– Mechanical arms.
– Robotics.
– Automate systems.
– Injection machine.
– Medical and treatment equipment.
– Safety defence systems.

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