United Motion Inc. is the U.S. subsidiary of Greensky Power Company, a professional motor and driver manufacturer with over 15 years of experience in motor industry.
Over the past decade, our portfolio has grown from traditional DC and induction motors to advanced BLDC/PMSM and servo systems featuring cutting-edge technologies. We also collaborate with world-class manufacturers such as Wolong Electric Drive and OLI Motion Control to provide reliable, application-appropriate drive solutions.
With one main manufacturing facility in China and a new facility under construction in Thailand, our annual production capacity is expected to reach 100,0000 units in 2026 and continue to increase.
In North America, United Motion Inc. serves as your dedicated sales and technical support partner, helping you select and implement the right motor and drive solutions for your applications.
What Is a BLDC Motor in a Washing Machine? In today’s home appliance market, washing machines are getting smarter, more efficient, and quieter. One of the key technologies driving this change is the BLDC motor, a type of motor that has quickly replaced older motor types. Many manufacturers are shifting to BLDC motors because they
Can a Gear Motor Produce Electricity? Can a gear motor produce electricity? The short answer is yes — under the right conditions. To understand how, we need to look at how motors and generators convert energy. For engineers, hobbyists, and renewable energy enthusiasts, this isn’t just theory — it’s practical. Reusing gear motors for off-grid
What Is a Planetary Gear Motor? In today’s age of automation, robotics, and smart machinery, Planetary Gear Motors have quietly become the unsung heroes behind countless mechanical movements. Whether in factory automation, electric vehicles, robotics, or medical equipment, these small yet powerful systems convert energy into controlled motion with precision and strength. Many people are
How Many Wires Does a BLDC Motor Have? In modern automation and robotics, the Brushless DC Motor (BLDC motor) is vital for efficient and reliable motion control. Found in EVs, drones, and medical devices, these motors are central to precision systems. A common question—“How many wires does a BLDC motor have?”—reveals key insights into its
Which is Better, a Synchronous Motor or an Induction Motor? In the world of electric motors, few topics spark more discussion among engineers, manufacturers, and machine builders than the question: Which is better — a synchronous motor or an induction motor? Both motor types play a vital role in powering today’s industries, from automation lines and
What Affects PMDC Motor Speed? Permanent Magnet DC (PMDC) motors are widely used across industries because of their simple design, reliable torque characteristics, and ease of control. However, one of the most critical aspects of their performance — and one that often raises questions — is speed. What makes a PMDC motor run faster or
