United Motion Inc. – A Chicago-Based Motion Solution Provider
Focus on R&D and customization of electric motors. Provide comprehensive one-stop services from design, manufacturing, supply chain management, to after-sales support. Grow with clients and drive the success to a new height!
BLDC Motor
A Brushless DC Motor (BLDC) is a high-performance motor that combines compact size with outstanding efficiency. Unlike induction motors, which generate torque through induced current in the rotor, BLDC motors use permanent magnets and electronic commutation to directly drive the rotor. This design eliminates rotor copper loss and reduces overall heat generation, resulting in significantly higher efficiency.
Another key advantage of BLDC motors compared with induction motors is their higher power density. For the same frame size, a BLDC motor can deliver more output power while maintaining smaller volume and lighter weight. This makes them an excellent choice in applications where space is limited but performance demands are high, such as robotics, drones, medical devices, and precision industrial equipment.
In addition to their efficiency and power density, BLDC motors also feature smooth operation, fast dynamic response, and long service life, thanks to the absence of brushes and commutators. These attributes make BLDC motors a superior solution wherever energy savings, compact design, and precision control are required.
United Motion Inc. is not only the authorized distributor in North America, but also a sister company of Greensky Power Company.
We have a manufacturing facility in China which has been operated for over 15 years, with a new facility in Thailand under construction.


BLDC Motor Series 22mm

BLDC Motor Series 52mm

BLDC Motor Series 90mm

BLDC Motor Series 100mm

BLDC Motor Series 110mm
PRIMARY FEATURES
01
Higher Power Density
BLDC motors deliver more output power within a smaller frame compared to induction motors. Their permanent magnet rotor design enables compact, lightweight solutions without compromising torque or speed.
02
Higher Efficiency
By eliminating rotor copper loss and reducing heat generation, BLDC motors achieve significantly higher efficiency. This lowers energy consumption, reduces operating costs, and extends battery life in portable applications.
03
Precise Speed and Torque Control
Electronic commutation allows accurate control of speed and torque. This ensures smooth operation, fast dynamic response, and superior performance in applications requiring precision, such as robotics and medical devices.
04
Long Service Life & Low Maintenance
Without brushes or commutators, BLDC motors avoid mechanical wear, minimizing maintenance needs and ensuring long-term reliability even in demanding environments.
05
Wide Application Flexibility
BLDC motors are available in a broad range of diameters and power ratings (Φ22 mm to Φ110 mm, 5 W to 1200 W). This allows seamless adaptation to diverse industries—from small household appliances to industrial automation.
06
Low Noise & High Reliability
The brushless design reduces electrical and mechanical noise, improving user comfort and ensuring stable performance in sensitive equipment. This makes BLDC motors ideal for quiet, high-reliability applications.
Customer Service
United Motion Inc.’s motion solution apply in diverse areas all around the world.
Our sales and engineering support teams are ready to assist you with any questions, including quotation, application support, and product configuration.
Please submit your requirements through our Custom Service Form to ensure a faster response. Or you can reach us at info@unitedmotioninc.com or (+1) 815.764.3849 for general inquiries.
Tell Us About Your Application Requirements
United Motion Inc welcomes inquiries and challenges. If you find our standard products cannot meet your need, please feel free to contact us for customization. Our professional engineering and service team will quickly review your need and propose a solution if we can make it.
We look forward to communicating and collaborating with you!