What is the Difference Between a Brushless DC Geared Motor and a Brushed DC Geared Motor?

The brushless DC motors with gearboxes are advanced motors that is consist of a bldc motor and a gearbox. It uses electronic commutation instead of traditional mechanical commutation. It has the advantages of high efficiency, reliability, low noise, and long life. The structure of the brushless DC geared motor is more complex than that of the brushed DC geared motor, but its performance and efficiency are higher. It detects the position of the rotor through the sensor and transmits the position signal to the driver. The driver controls the current direction of the motor based on the position signal, realizes electronic commutation, generates a magnetic field, and drives the rotor to rotate.

DC brushed geared motor is also a common motor type, which consists of a DC motor and a reducer. This kind of motor has the advantages of simple structure, easy control, and low cost. Therefore, in some applications with simple functions, or on the premise that it can meet the necessary performance, low cost, and sufficient reliability, the DC brushed geared motor is an ideal choice. A very good choice.

The difference between brushless DC geared motors and brushed DC geared motors mainly lies in the following aspects:

1.  Different structures

DC brushed geared motors usually include motor body, brushes, commutator and other components, while DC brushless geared motors usually include motor body, sensors and drivers.

2. Different working principles

DC brushed geared motors rely on the action of brushes and commutators to achieve current commutation through mechanical commutation, thereby generating a magnetic field. The brushless DC geared motor uses electronic commutation instead of mechanical commutation through the cooperation of sensors and drivers to achieve current commutation, thereby generating a magnetic field.

3. Different performances

DC brushed geared motors will have a certain amount of noise and wear due to the friction between the brushes and the commutator, and the output torque is relatively small. The brushless DC gear motor has the advantages of higher efficiency, longer life, smaller noise and smaller size.

4. Maintenance and maintenance methods are different

DC brushed geared motors need to regularly replace brushes and clean the commutator, while DC brushless geared motors do not need to perform these operations and only need to regularly check the operating status of the sensor and driver.

To sum up, the brushless DC geared motor has higher performance and maintenance convenience than the brushed DC geared motor, so it is widely used in some high-precision, high-efficiency, and long-term operation application scenarios.

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