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DC electric motors: Tips for choosing the right one


Choosing the ideal DC electric motor can be tricky, but it doesn’t have to be. It’s important to know what kind of environment you’ll be operating it in to get the best fit for your needs. Consider how much power, voltage, rpm, torque and current the motor has in relation to what you need.

DC motors are a fantastic choice for anyone looking for something that will get the job done. They have existed since the 1800s and are popular still due to their variety, ease of use, and low cost. DC electric motors are classified into three types: permanent magnet DC motors, brushed DC motors and brushless DC motors. Each variety has its own set of advantages based on what you intend to use it for, so consider all of your options before making a choice.

Brushless DC motors

Brushless DC motors have grown in popularity since they are energy-efficient while still producing strong torque at low speeds.  However, because there is no residual magnetism, they require special control. However, if correctly managed, they can operate very well.

These sorts of electric motors are often more expensive, but they are remarkably energy-efficient, lightweight, and compact. As they use a rotating magnetic field instead of commutator bars like standard AC/DC brush motors, they don’t require carbon brushes or slip rings. The primary advantage of Brushless motors is that they have no bearing wear because they have less friction than regular DC electric motor models, which means they last significantly longer!

Permanent magnet DC motors

DC permanent magnet motors are frequently used in applications with restricted power. These motors generate their own magnetic fields utilising permanent magnets, eliminating the need for power.  Despite the high price, no additional components are necessary, such as brushes or slide rings.

Another benefit of having a permanent magnet DC motor is that it is extremely quiet. If you need something powerful that will operate smoothly, this DC electric motor is worth consideration. Since permanent magnet DC motors generate a lot of heat, they work best in environments with ample airflow.

Brushed DC motors

Brushed motors are the most basic and widely used motors, particularly for basic industrial equipment and low-cost applications. This is the most common and commonly used form of DC motor, so it’s critical to understand how they work in order to choose the best one for your purposes.

They commonly use carbon brushes that are spring-loaded against a stationary commutator (which allows electricity to flow), but this means that regular maintenance is required. If you’re looking for a low-cost DC electric motor, these will be ideal!

Edington Agencies source and supply a range of brands and options of electric motors for industries around Australia. To learn more about our variety of electric motors, AC motor parts and DC motor parts, contact Edington Agencies directly today on 07 3397 4575 with your enquiries and your application needs.