Brushless DC motors eliminate physical contacts by replacing commutators and brushes with electronic circuits. Without contact wear, they offer a longer service life, lower acoustic noise, and reduced electromagnetic interference (EMI).
MinebeaMitsumi offers a wide range of brushless DC motors with outputs ranging from a few watts to several kilowatts, covering applications from consumer electronics to automotive use. We also provide custom solutions tailored to your specific requirements. Our diverse lineup includes standard inner-rotor and outer-rotor types, as well as frameless motors and integrated in-wheel units. By optimizing both structural design and motor control, we achieve high energy efficiency and power output, allowing you to select the ideal motor for your application. From product selection to dedicated technical support, rely on our brushless DC motor experts.
Please visit the link below for our specialized brushless DC motors page.
Applications
Automotive
Industrial Drones
Hair Dryers
Robot Vacuums
Fans
Air Purifiers
Range Hoods
Refrigerators
Printers
Multifunction Printers
Humanoid Robots
Automated Guided Vehicles (AGVs)
Power Tools
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Product List
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Small brushless motors
Small 3-phase outer rotor brushless motor designed for home appliances, AV, and industrial use.
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Power brushless motors
Brushless motor for electric fan main drives and multifunction printer mechanisms.
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Polygon mirror scanner motors
Polygon mirror scanner motor engineered for laser writing systems in digital copiers.
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Vacuum Pump (under development)
Compact 70g electric vacuum pump with a long-life brushless motor for efficient suction.
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Brushless inner rotor motors
An inner-rotor brushless motor achieving excellent heat dissipation in a compact size.
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FAQ
How much longer is the lifespan of a brushless DC motor compared to a brushed DC motor?
It is typically over 10 times longer, depending on operating conditions and brush materials.
While a brushed motor's lifespan is limited by brush/commutator friction and electrical spark wear, a brushless motor's lifespan is determined by bearing grease degradation and electronic circuit longevity. Brushed motors average 200 to 1,000 hours, whereas brushless motors can last for several thousand hours or more.
What are the disadvantages of brushless DC motors?
The primary disadvantages are higher upfront costs compared to brushed DC motors, and the need for a dedicated driver (drive circuit).
Brushless DC motors cannot operate simply by connecting a power supply directly to them. Because an IC and PCB are required to control current switching, the initial cost is higher than that of brushed DC motors.
Why do brushless DC motors require a driver circuit?
To precisely switch the direction of the coil current in sync with the rotor's position.
Unlike brushed DC motors, they lack mechanical contacts that automatically switch the current. An electronic circuit must perform this function to maintain motor rotation.
How is the rotation speed of a brushless DC motor controlled?
The rotation speed is controlled by finely switching the timing of the electrical current.
Specifically, increasing the voltage results in higher speeds, and decreasing it results in lower speeds. PWM and VSP control are the primary methods used for this speed adjustment.
What are the specific applications for brushless DC motors?
They are widely used in drones, air conditioners, refrigerator compressors, cordless vacuum cleaners, and electric vehicle (EV) drive units.
Because they lack wearing parts (brushes), they feature long service life, quiet operation, and high efficiency. These characteristics make them an essential power source for products requiring these three features.
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