EC Centrifugal Fans
Your Professional EC Centrifugal Fans Supplier
ECNITY is a professional manufacturer specializing in EC motors and fan solutions for HVAC and industrial applications. With years of experience in motor production, fan assembly, and system optimization, we provide energy-efficient centrifugal and axial fans for OEM manufacturers and system integrators worldwide. Our products are widely used in ventilation, air conditioning, cooling, and industrial airflow systems.
Customized Solutions
We offer flexible OEM and ODM support for airflow, pressure, motor control, and structural design. Each project is adjusted to match different applications and customer needs.
Quality Control
Our manufacturing covers the full production process, including motor assembly, impeller balancing, fan assembly, and testing. Strict quality control helps ensure product consistency and long-term reliability.
Professional Service
Effective technical communication improves project efficiency. Our engineering team works closely with customers to reduce development risks, shorten lead times, and support long-term cooperation.
Parameter
|
Motor type |
BLDC external rotor motor |
|
Impeller Diameter |
190mm |
|
Impeller Material |
PA66 |
|
Direction of Rotation |
CW, see on rotor |
|
Speed Control |
0-10VDC/PWM |
|
Type of Protection |
IP44 / IP54 |
|
Insulation Class |
B |
|
Operation Mode |
S1 |
|
Bearing |
Maintenance-free ball bearing |
|
Ambient Temperature |
-25~+60℃ |
|
Motor Protection |
Locked-Rotor Protection, Reverse Polarity Protection, Thermal Protection, Soft Start |
|
Certificate |
CE, LVD, ROHS, ETL |
Advantages of EC Centrifugal Fans
Energy Efficiency
EC centrifugal fans are highly efficient compared to traditional AC motors. They use electronic commutation to precisely control the motor speed, resulting in energy savings compared to constant-speed AC motors.


Variable Speed Control
EC centrifugal fans can operate at variable speeds, allowing for precise control of airflow and better matching of fan performance to system requirements. This helps in optimizing energy consumption and overall system efficiency.
Quiet Operation
EC centrifugal fans operate more quietly compared to traditional AC motors. The smooth speed control and absence of mechanical brushes contribute to reduced noise levels, making them suitable for applications where noise is a concern.


Compact Design
EC centrifugal fans often have a more compact design compared to traditional fans with AC motors. This compactness can be advantageous in installations where space is limited.
Low Maintenance
Due to their brushless design, EC centrifugal fans require minimal maintenance. This reduces downtime and maintenance costs associated with fan systems, making them more economical in the long run.


Environmentally Friendly
EC centrifugal fans are more environmentally friendly than traditional AC motors due to their higher efficiency, which results in lower energy consumption and reduced carbon emissions.
Applications of EC Centrifugal Fans

HVAC systems in homes and businesses
EC centrifugal fans are important in HVAC systems for homes and offices. They adjust airflow to match the space’s needs, saving energy. At home, they keep temperatures comfortable while using less power.
Ventilation and cooling in factories
Factories need strong and reliable ventilation systems. EC centrifugal fans are perfect for these jobs because they are efficient and powerful. They move a lot of air to control heat, remove dust, and keep workers safe.
Cooling for data centers
Data centers need exact cooling to protect their equipment. EC centrifugal fans are great for this because they are efficient and smart. They adjust airflow based on temperature, keeping equipment cool.
Medical and laboratory environments
Medical and lab spaces need clean air and controlled airflow. Centrifugal fans help keep these conditions safe and steady. These fans are used in fume hoods, cleanrooms, and air filters. They remove harmful particles, control temperatures, and create safe spaces.
Installation Precautions for EC Centrifugal Fans
1. The entire unit needs to be placed directly on the site and leveled using double inclined pads.
2. When assembling on site, the base needs to be protected to ensure that there will be no rust, cracks, etc.
3. The bearing seat and base must be tightly connected, with vertical unevenness not exceeding 0.2/1000 and horizontal unevenness not exceeding 0.3/1000.
4. Before grinding and scraping the bearing bush, it is necessary to calibrate the axis of the rotor and the axis of the casing, and correct the gap between the impeller, the air inlet, and the main shaft and the bearing bush.
5. When adjusting the hole axis of the chassis rear baffle, it is also necessary to comply with the requirements of the equipment's technical documentation.
6. When installing a centrifugal fan with roller bearings, you can determine whether the axiality of the bearing holes on the bearing frame is the same based on the ease of rotation of the rotor after installation.

Precautions for Using EC Centrifugal Fans




Regular cleaning
Keeping the fan clean is an important part of maintenance. Accumulated dust and debris may affect the normal operation of the fan or even damage key components.
Bearing lubrication
Regularly checking and replacing bearing lubricants ensures smooth bearing operation, reduces wear and prolongs life.
Impeller balance
Regularly check the balance of the impeller to ensure there is no deviation or damage to avoid vibration and noise problems.
Motor Maintenance
Regularly check the running status of the motor to ensure that the motor is working properly, and maintain the cleanliness and ventilation of the motor to prevent overheating.
Fan connecting parts
Check the connecting parts for looseness or damage to ensure that the fan parts are firmly and reliably connected.
Temperature and vibration monitoring
Regularly monitor the temperature and vibration level of the fan. Abnormal temperature or vibration may indicate a problem with the fan that needs to be handled in a timely manner.
Regular inspections
Conduct regular comprehensive inspections, including the electrical system, mechanical transmission system, etc., to ensure the normal operation of the fan components.
Environmental protection
Keep the environment around the fan clean and well ventilated to avoid dust and debris from entering the interior of the fan.
Ordering Process
Inquiry - quotation - communication - order confirming - deposit payment - production - testing and debugging - balance payment - packing - delivery - customer receiving - after service.
Packaging and Shipping
|
Packaging |
Cardboard boxes, wooden crates |
|
Shipping |
Shipping by sea, by air, by express are acceptable. According to your requirements. |
Our Factory






FAQ
As one of the most experienced ec centrifugal fans manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please feel free to buy high-grade ec centrifugal fans made in China here from our factory. We also accept customized orders.
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