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Ningbo Longwell Electric Technology Co.,LTD
Business Partner :GREE,BYD,Carrier,Midea,Systemair,LG,FRICO,Daikin,SIEMENS,YORK,etc
Go Further with LONGWELL
Cross Flow Fans |High quality Motor| 0-10V/PWM| High Air FLOW | Highly customizable
Housing:LONGWELL offer metal housing, mostly of aluminum.
Impeller: LONGWELL impellers ‘s diameter ranges from 25mm to 150mm and 76mm to 1200mm in length ( single – double – triple type )
Bearings: NMB or NSK ball bearings for our tangential fans.
Voltages: LONGWELL DC cross flow fans are workable in 12V,/24V/48VDC,115/230Vac&EC
Speed Control System : 0-10V / PWM (DC/EC Motor) or 1-2-3 Speeds(AC Motor)
Best selling :40mm Cross flow fan -SUPER quiet design down to 20dBA
Mainly be used in Heating & Cooling system: heaters ,Convectors, floor heating system ,air exchanger ,etc
Hot sale :45mm Cross flow fan – with 0-10V & PWM Speed control system
Mainly be used in Heating & Cooling system: heaters ,Convectors, floor heating system ,air exchanger ,etc
Hot sell : 60mm Cross Flow fans -Aluminum material with 3phase low noise BLDC Motor
Used in Ventilation units , cooling system ,Heaters ,etc — 0-10V/PWM stepless speed control system
NOTES:
The price attached to the above products is only the reference price or the price reference under the standard parameter configuration, please contact our sales engineer for the specific price, to provide you with the most accurate quotation and discount
The Professional’s Choice for LONGWELL Cross Flow Fans
High quality Motor| 0-10V/PWM| High Air FLOW | Highly customizable
LONGWELL-Project & Customer Applicaiton
Heaating Convectors ,Heaters ,Fireplace, Floor heating system ,AIR-CURTAIN,Air conditioning ,Refrigerator,TRAIN_Ventilation system ,Medical machine,3d -printer,Greenhouse,etc
PROJECT : Floor heating Convector
Adaptation product：
30,40,45mm diameter cross flow fan
Motor: BLDC motor
Voltage : 12V/24V
Speed control : PWM stepless control
Blower type: single -double -triple
PROJECT : Fireplace
Adaptation product：
48,60,65mm diameter cross flow fan
Motor: AC Shaded pole motor
Voltage : 115V/230V
Speed control : 2 speed & 3 speed
Blower type: single -double
PROJECT : Heating Convector
Adaptation product：
30,40,45mm diameter cross flow fan
Motor: BLDC motor
Voltage : 12V/24V
Speed control : PWM stepless control
Blower type: single -double -triple
Heating Convector
Air Curtain
Air Conditioning
Fire Place
Refrigeration
Train Ventilation
Medical Machine -Ventilation
3D-Printer
Greenhouse-Plant system
Ningbo Longwell Electric Technology CO.,LTD
High Quality Air & Smart Fans
Centrifugal fans & Blowers, Cross flow fans,Axial fans ,duct fans ,motos,etc
WHY LONGWELL ？
Centrifugal fans & blowers | Cross flow fans | Axial fans | Exhaust fans & Blowers | Motors | Air-conditioning impeller & blades| Accessories and Moulds
LONGWELL focuses on providing global customers with high-efficiency, controllable fan solutions and HVACR integrated technical solutions based on ventilation technology. Driven by technological innovation, Longwell continuously researches and develops advanced fan technology to offer customers high-performance and high-efficiency solutions. Our products cover civilian ventilation, wind power generation, industrial manufacturing, new energy, and agricultural production, earning the trust and praise of customers worldwide.
● Highly qualified : ISO9001, ISO14001, ISO45001, BSCI, CE, UL/ETL, FCC, CCC, Rohs, EMC, LVD, etc.
● OEM for well-known brands
● Supplies Fortune 500 Companies
● Global technical support (European office, North American office, Dubai office, etc.)
Trusted by top Brands
Longwell’s efforts make us advocates of sustainable development and leaders in the high-efficiency fan and motor industry.
Worldwide Marketing of LONGWELL
Exhibitions & Offices | AHR_USA ,MCE_Italy, CRH_China, ISH_China/German,HARFKO_Korea,etc
Over 15Years Ventilation fans & Motors Production Experience
Longwell’s expertise in fan manufacturing can be traced back to 1998. It is a leading fan manufacturer dedicated to providing global customers with efficient and controllable fan solutions. The company is committed to addressing global energy crisis and creating a healthier, more comfortable, and environmentally friendly living environment for people.
Longwell has a strong team of research and development professionals dedicated to studying innovative fan technologies. We adopt advanced EC (Electronically Commutated) motor drive technology to achieve high efficiency and precise airflow control. Through EC motor-driven fans, our customers can enjoy higher quality and more reliable airflow, achieving significant breakthroughs in energy utilization. We continuously promote the development of fan technology to meet the demand for high-tech and high-efficiency solutions.
FAQ
Q1. what’s the advantages of your cross flow fan ?
-LONGWELL cross flow is special design for low noise purpose only . noise even low to 19 dBA ;
– We have large production range from 20mm to 200mm ;
– We have heavy duty design which makes 4000rpm for diameter less 60mm，150mm dia fan makes over 2700rpm.
Q2. Does Longwell provide any speed control options for DC cooling fans ?
Reply :
Yes , Longwell can provide some speed regulator solutions according customer’s requirements ,such as :
– The 0-10V/ pwm controller is for use with the full range of cross flow fans / dc cooling fans. Powered by the 10VDC it provides infinitely variable, manual speed control between 0% and 100% ;
– Can control multiple fans running at the same speed ;
– Stepless control knob for infinitely variable speed setting .
Q3. how we connect the tangential fan to our application ,is there a wiring diagram ?
Please check the speed control of your application first ( is it PWM or 0-10V ) ,
Please refer to the wiring diagram of 0-10v series as below :
for more details please contact us for professional engineer service ,
Q4. Life span of this kind of dc cross flow fan ?
Longwell EC external rotor motor surpasses efficiency class IE4, magnets with no rare earths, maintenance-free ball bearings (sealed) with long-term lubrication, theoretical nominal service life of at least 40,000 hours of operation, installation with horizontal and vertical motor shaft; soft start, integrated current limitation. Integrated electronics, quiet commutation logic; 100 % speed controllable; control signal 0-10 V DC / PWM; tach output.
Q5. Are there any other AC DC EC cross flow fans options or solutions for selection ?
Yes ,sure .
LONGWELL is a professional manufacturer of fans, blowers , motors and components for heating ,venlation, air conditioner and refrigeration applications ,specialist in centrifugal fans, axial fans, AC /BLDC cross flow fans, single / double forward curved fan BLOWERS ,AC / BLDC/ECM motors as well as industrial fan blowers, inline duct fans , Poultry ventilation fans ( AC / DC /EC ) , etc. Please check below photos for reference :
Longwell as a known and trustworthy DC cross flow fan Supplier in China , we assure you the best product quality and service.
If you are looking for DC cross flow fans for your manufacturing applications or electronic devices, do go through the features and specifications of our various models of DC cross flow fans. In case you require any further information or have technical queries, you can contact us directly at :
Q6. What are the key performance features of LONGWELL aluminum cross flow impellers?
LONGWELL cross flow impellers are engineered for low noise, high air quantity, excellent dynamic balance, high tensile strength,and lightweight construction. Our aluminum alloy plate construction ensures durability while maintaining the precision required for uniform airflow across the entire length of the wheel. These features make them ideal for high-demand commercial and industrial HVAC applications.
Q7. What diameters and standard lengths are available, and do you accept custom length orders?
We offer a comprehensive range of wheel diameters from 30mm to 150mm. Standard lengths vary by diameter, ranging from 115mm up to1050mm (e.g., 60mm offers lengths from 120mm to 480mm; 100mm offers lengths from 360mm to 1000mm). Yes, we fully support custom length requirements. For wholesale and OEM clients, we can cut the impeller to precise millimeter specifications to meet your exact assembly needs.
Q8. How does LONGWELL ensure dynamic balance and low noise in mass production?
As a professional HVAC fan and motor manufacturer, we adhere to strict quality control standards. Each impeller undergoes precision dynamic balancing to meet G6.3 or higher balancing grades (customizable upon request). The specific blade count design (ranging from 20 blades on 30mm to 50 blades on 150mm) is optimized to minimize air turbulence, ensuring consistent low-noise operation across bulk orders.
Q9. What are the typical industrial applications for these cross flow impellers?
Based on our catalog specifications, LONGWELL impellers are widely used in: Electrical Fireplaces, Air Curtains/Air Doors,
Microwave Ovens, Dishwashers, Vehicle Air-Conditioning, Ground Heating Systems, and Electronic Cooling Units. Their wide diameter range (30mm – 150mm) covers everything from compact kitchen appliances to large-scale commercial air doors.
Microwave Ovens, Dishwashers, Vehicle Air-Conditioning, Ground Heating Systems, and Electronic Cooling Units. Their wide diameter range (30mm – 150mm) covers everything from compact kitchen appliances to large-scale commercial air doors.
Q10. Do you offer OEM/ODM services for cross flow impellers (shaft, blade count, end rings)?
Absolutely. LONGWELL specializes in OEM/ODM solutions for B2B clients. We can customize: Shaft Diameter & Material: Matching your motor specifications. Blade Count: Adjusting number of blades for specific pressure/flow curves (as referenced in our catalog,from 20 up to 50 blades). End Rings & Flanges: Custom injection molded or aluminum end rings for specific housing mounts. Simply provide your drawings or required parameters, and our engineering team will provide a tailored solution for you
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