
Connection Mode: Discover the seamless integration possibilities of our motor, designed to ensure hassle-free connectivity and optimized performance. Our connection mode is engineered for simplicity and efficiency, catering to your specific commercial needs.
Motor model | Power supply | Number of phases | Number of poles | Output power | Current | Reference speed |
Model | Vot | Phase | Poles | Output | Current | Speed |
139BLDC-250W | AC220V | 3 | 10 | 250W | 1.05A | 1000rpm |
139BLDC-500W | AC220V | 3 | 10 | 500W | 2.1A | 1000rpm |
139BLDC-750W | AC220V | 3 | 10 | 750W | 3.3A | 950rpm |
Type | L | B | C | D | E | F | G | DD | d | H |
139BLDC-250W | 134 | 35 | 86 | 16.5 | 12 | M8 | 39 | 190 | 12 | 10.5 |
139BLDC-500W | 149 | |||||||||
139BLDC-750W | 159 |
Number | Colour | specification |
1 | RED | AC220V (L) |
2 | BLK | AC220V (N) |
3 | YEL/GRN | PE |
Number | Colour | specification |
1 | BLU | +5V |
2 | GRN | RS485 A |
3 | WHT | RS485 B |
4 | YEL | GND |
Number | Colour | specification |
1 | BLU | +10V |
2 | WHT | VSP |
3 | YEL | GND |

Application areas: This versatile motor finds its application in a wide range of areas such as air source heat pumps, axial flow fans, fresh air systems, household air conditioners, and commercial air conditioners. Wherever you need efficient air movement, this motor delivers.
Power supply: Powered by an AC220V/50Hz source, this motor boasts a robust 10-pole design with an impressive output power range of 100-750W. It is engineered to meet your power needs seamlessly and effectively.
Utilizing high-quality, low-noise ball bearings from renowned brands like NSK and TPI, this motor ensures a smooth and quiet operation, enhancing durability and performance.
Featuring a roll plate structure and adjustable installation size, it adapts flawlessly to various environments and comes with a motor protection level of IP54, ensuring safety and reliability in diverse conditions.
Harnessing Hall-free FOC control technology, our motor guarantees exceptional low noise and vibration levels, coupled with high efficiency and reliability, making it the ideal choice for demanding applications.
Controller speed control interface: Offers dual options with a (0 ~ 10V analog input) and b (RS485 communication interface), allowing flexible control tailored to your specific requirements.
Designed with a unique integrated motor controller, this motor simplifies the installation process with its plug-and-play convenience, making it user-friendly and efficient.
Experience the power of stepless speed regulation, constant torque, constant speed, and constant air volume, ensuring optimal performance and energy efficiency at all times.






Changzhou Joinbrain Motor Co., Ltd. Nestled in the heart of China's esteemed motor manufacturing hub, the Wujin Economic Development Zone in Changzhou, our company holds a strategic and advantageous position. With an expansive and modern production facility sprawling over 8,000 square meters, we specialize in the pioneering development and precise manufacturing of motors crafted for a wide and varied range of applications, encompassing central air conditioning fans, innovative air energy systems, efficient water pumps, cutting-edge evaporative air coolers, robust livestock ventilation solutions, dynamic permanent magnet brushless motors, high-performance cooling towers, and dependable air compressor fans. Our operations boast a remarkable annual production capacity, exceeding one million units. Furthermore, we provide customized motor design solutions tailored to meet the specific and unique requirements of our esteemed customers.
Recognized as a National High-Tech Enterprise and a Changzhou Science and Technology Enterprise, our diverse product range is also accredited by CCC and CE certifications, showcasing our steadfast dedication to quality and reliability.
Our team comprises a dynamic group of highly skilled professionals with deep-rooted expertise in motor and control technologies, fostering continuous innovation and maintaining technical superiority. Equipped with cutting-edge production and testing facilities, we utilize advanced processing methodologies and implement strict quality control measures to ensure our products' unwavering reliability and superior performance.
Our mission is deeply rooted in the principles of integrity and an unyielding commitment to quality. To consistently enhance our product standards and refine our processes, we have established a comprehensive quality management system that adheres rigorously to ISO9001:2015 standards, guaranteeing outstanding service and product excellence at every stage-pre-sale, during production, and after-sale.
Quality Policy:
With an unwavering dedication to continual improvement, we are committed to providing products that not only meet but far surpass our customers' expectations.
Guided by our foundational principles of "Innovation and Integrity," we are committed to producing exceptional quality products and fostering genuine partnerships that spur mutual growth and success with our clients across a wide array of industries.


Q1: Are you factory?
A: Yes, we have been in designing and providing excellent motors for customers. Our factory production is all under ISO9001 quality management system.
Q2: How long you could prepare samples?
A: Normally 3 days if we have the sample in hand. If customized one, about a week around
Q3: How about batch order production?
A: Normally 15-30 days, the customized or newly developed products may take more half month.
Q4: Do you inspect the finished products?
A: Yes, we do inspection according to ISO9001 standard and ruled by our experienced QC staff.
Q5: What advantage do you have?
A: For the motors, we have long enough of 24months guarantee, and for the service, we offer 24 hours technical support and barrier-free communication.
Q6: How do you do after-sale service?
A: We will send you free spare parts to replace under warranty.
Q7: what's the delivery time?
A: It depends on the order quantity. Normally delivery time will be within 15 days after receiving payment by TT.
Q8: What is your terms of payment ?
A: Payment≤5000USD, 100% in advance. Payment≥5000USD, 30% T/T in advance , balance before shipment.