We offer a wide range of micro DC motors, ranging from 4mm to 42mm+ in size, to meet various application needs of our customers. Due to their small size, these micro motors are highly suitable for devices, equipment, and systems with limited space.
These small DC motors serve as the power source for small gear motors. We typically utilize Brushed DC motors, Coreless DC motors, BLDC motors, and various gearboxes to achieve the desired reduction ratio. This enables us to meet the requirements of industrial, medical, and instrumentation applications.
Our core value lies in collaborating with customers to design motors, build initial prototypes, and subsequently engage in mass production, all while delivering high-quality products and optimal cost-effectiveness to meet their high-value needs.
In a brushless DC motor, as the name suggests, it operates without the use of brushes for commutation. Instead, electronic commutation is employed to convert electrical energy into mechanical energy, eliminating the need for brushes.
The coils of the brushless motor are located on the stator of the motor, while the permanent magnets are fixed on the rotor. The rotor rotates a full 360 degrees.
Since the coils no longer rotate and only the permanent magnets rotate, brushes are not required. Motor commutation is achieved through electronic devices that utilize Hall sensors to detect the position of the permanent magnet poles. The electronic circuitry then switches the direction of current in the coils at the appropriate moments to ensure the correct magnetic field direction for motor operation. This eliminates the drawbacks associated with brushed motors.
A brushless DC motor is a unique type of motor in terms of its structure. Firstly, its internal components do not generate rapid mechanical wear, making it virtually maintenance-free. However, over time, the brushes in a brushed DC motor undergo more mechanical wear, eventually leading to motor failure. This is the secret behind the long lifespan of brushless motors.
Moreover, by eliminating brushes, there is no dust, debris, or sparks generated, significantly reducing electromagnetic interference on radio-controlled devices and minimizing heat and noise generation. This key advantage allows brushless motors to operate with ultra-low electrical noise, low friction, and smooth operation. In contrast, brushed motors rely on brushes for commutation, and the intense sparking inside the motor is a direct cause of high motor noise. If your application requires limiting electrical noise, then a brushless DC motor is the most suitable and preferred choice.
Usually, the size is less than 160mm or the power is less than 750W motor is classified as micro DC motor. Their most notable feature is their small size and lightweight. They are small DC motor that are easy to install and use.
Small DC motors typically run on anywhere between 1.5 and 100 Volts. However, due to the fact that most robots are powered by batteries, roboticists usually opt for motors that run on 6, 12, or 24 Volts.
Micro DC motors are the most common type of motor, and possess two leads, a positive and negative. By connecting these leads to a battery, the motor will rotate in a certain direction. If the leads are reversed, the motor will rotate in the opposite direction. Additionally, small DC motors use permanent magnets as stators, and if rotated, can act as a generator, with its armature producing an emf proportional to its speed, allowing it to charge a battery.
There are three ways to control the speed of DC motor:
1) Change the speed by adjusting the armature voltage.
2) Change the motor’s magnetic flux.
3) Change the resistance R of the armature circuit, and connect the resistance of the motor armature to adjust the speed.
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