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.

UNITED MOTION INC.
powersky power
MOTORS

BLDC & PMSM Motor

Stepper Motor

DRIVERS
APPLICATIONS

Lawn Mowing Robots

Lawn Mowing Robots

Modern lawn mowing robots require efficient, quiet, and precise operation to handle uneven terrain and long working hours. Compact, energy-saving BLDC motors provide the torque and durability these smart machines need, ensuring reliable performance and a longer lifespan. They help create cleaner, greener, and more autonomous lawn care systems for home and commercial use.
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Electric Bicycles

Electric Bicycles

Electric bicycles combine smooth acceleration, strong torque, and whisper-quiet motion for an enjoyable ride. Using BLDC or geared DC motors designed for energy efficiency and lightweight integration, e-bikes achieve better comfort and longer battery range. Ideal for daily commuting or long-distance cycling, they deliver dependable power and a seamless riding experience.
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Water Pumps

Water Pumps

Efficient water pump systems rely on stable torque, precise speed control, and long-term reliability. BLDC and PMDC motors make this possible with their durable construction, high efficiency, and low maintenance design. Suitable for residential, agricultural, and industrial use, these motors maintain steady water flow while helping reduce overall energy costs.
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Electric Kayaks

Electric Kayaks

Electric kayaks offer smooth propulsion, strong thrust, and a quiet, eco-friendly ride across the water. Compact and waterproof BLDC motors deliver efficient power with excellent corrosion resistance, allowing for longer trips and less energy consumption. Designed for outdoor adventure, they combine durability, performance, and comfort in one sleek system.
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Company News & Blogs

Greensky Power Successfully Showcased at SPS Germany 2025

Greensky Power Successfully Showcased at SPS Germany 2025 — A Key Moment for Intelligent Motion Solutions

Greensky Power Successfully Showcased at SPS Germany 2025 — A Key Moment for Intelligent Motion Solutions Nuremberg, Germany – November 27, 2025 As the SPS Exhibition in Germany officially concluded today, UNITED MOTION INC. is pleased to highlight the strong presence and successful exhibition of our long-term partner Greensky Power. Representing advanced motion technologies on

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types of electrical motors

Types of Electric Motors Explained with Applications and Tips

Types of Electric Motors Explained with Applications and Tips Electric motors are the hidden engines behind the modern world. Although the first part of this blog is intentionally shorter per your request, the purpose remains the same: provide a buyer-friendly, industry-level explanation of electric motor uses, electric motor function, and electric motor construction, so engineers,

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BLDC motor

How to Choose a BLDC Motor for an Electric Bike?

How to Choose a BLDC Motor for an Electric Bike? Choosing the right BLDC motor for an electric bike sounds simple, but anyone who has worked in the e-bike industry knows it is one of the biggest sources of confusion for new builders, small manufacturers, and even experienced technicians. The motor you select affects speed,

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bldc motor with driver

Can You Run BLDC Motor without Driver?

Can You Run BLDC Motor without Driver? It’s a common question we hear at United Motion Inc.: “Can I run a BLDC motor without a driver?” The short and direct answer is no, you cannot. A Brushless DC motor is not like a simple DC toy motor that spins when you connect it to a

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bldc motor

What Is a BLDC Motor in a Washing Machine?

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

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gear motor

Can a Gear Motor Produce Electricity?

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

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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  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!

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