Quiet, space-saving airflow for fireplaces, air curtains, elevator cabins, split air conditioning and heating appliances.
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Reliable AC motor-driven tangential blowers featuring stable airflow and durable aluminum impellers.
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Low-voltage DC tangential fans offering precise speed control and highly efficient cooling performance.
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Ultimate energy-saving EC motor cross flow fans with smart speed regulation and ultra-low noise levels.
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Compact, ultra-quiet tangential blowers specifically engineered for elevator cabin ventilation.
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Heavy-duty tangential fans built for efficient heat dissipation in power transformers.
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Inside these downloadable PDF brochures, you will find precise aerodynamic performance curves (PQ curves), exact dimensional drawings, wiring diagrams, and acoustic data to help you select the optimal airflow solution for your HVAC or industrial project.
Longwell Technology is a designer, manufacturer, and distributor of high quality, cost effective, RoHS, certified AC cross flow fans, (voltages 110v – 120v & 220v -240v ) in AC capacitors as well as shaded pole motors. We have professional service teams in the United States, Russia, Germany, Poland, Turkey, and China, among other locations. Our Industrial crossflow fans, often referred to as tangential or blower wheel fans, will generate a wide, even flow of air parallel to the unit being cooled, insuring greater efficiencies and lower noise ratios per cfm when compared with axial fans. Impellers range in size from 60mm to 1200mm in wheel diameter for an ac capacitor type motor and from 30mm to 150mm in wheel diameter for a shaded pole motor. The fan’s motor location can be changed from the right side to the left side by the factory at the customer’s request. Additional modifications allow two impellers to be mounted to a single motor, one impeller on either side of the motor housing. 3rd wire options are also available on all Industrial crossflow fans: signal-rotation detection, signal-frequency generator function as well as temperature control for operating environments where noise and temperature are a consideration. Various speeds are also available.perpendicular direction of the fan across its length, thereby creating a broad and laminar airflow pattern. This fan is also known as a tangential cross flow fan due to its tangential airflow pattern. Powered by DC sources, these fans are used in applications requiring efficient ventilation or cooling in compact spaces.
A DC cross-flow fan draws air in from one side of the fan housing and expels it in a perpendicular direction of the fan across its length, thereby creating a broad and laminar airflow pattern. This fan is also known as a tangential cross flow fan due to its tangential airflow pattern. Powered by DC sources, these fans are used in applications requiring efficient ventilation or cooling in compact spaces.
Longwell technology provides DC cross flow fans with various performance characteristics, materials, 3 Phase BLDC Motor, and functionalities with IP21 rating.Our RoHS-certified product line encompasses a wide selection of tangential cross flow fans in 30mm to 150mm impeller sizes and in metal/aluminum housing. Our DC cross flow fans are fitted with a DC brushless motor and designed for horizontal mounting. We can provide them with options, such as special IP ratings, left and right-hand motor configurations, etc.
Longwell offer different kinds of DC cross flow fans with 3 phase BLDC Motor .And safety grid and speed regulator controller can be choosed with this kind of tangential fan.
EC cross-flow fan, also known as an electronically commutated cross flow fan, is a type of fan that utilizes an electronically commutated motor (EC motor) for its operation.
Cross-flow fans are designed to produce a wide, uniform airflow. They have a cylindrical housing with an impeller wheel that extends across the diameter of the housing. As the impeller rotates, it draws air in through one side of the housing and expels it out the other side, creating a consistent flow of air across the entire length of the fan.
The electronically commutated motor used in an EC cross-flow fan is a brushless DC motor that offers several advantages over traditional AC motors or standard DC motors. EC motors are more energy-efficient, quieter, and offer variable speed control, allowing for precise adjustment of airflow. They also typically have a longer lifespan and require less maintenance compared to other types of motors.
LONGWELL technology provides EC cross flow fans with various performance characteristics, materials, with EC External Rotor Motor.Our ec cross flow fan product line encompasses a wide selection of tangential cross flow fans in 80mm to 150mm impeller sizes and in steel+aluminum alloy housing. Our EC cross flow fans are designed for horizontal mounting. We can provide them with options, such as special IP ratings, left and right-hand motor configurations, etc.
Comprehensive Specifications:
Quickly match your cooling and ventilation specifications with Longwell's high-efficiency cross flow fans. Find custom OEM configurations, 3D CAD files, and cross-reference alternatives below.
| Your Requirements | Longwell Technical Solutions | Resources & Actions |
|---|---|---|
| Airflow & Dynamic Performance Match | High-quality tangential blowers featuring uniform, laminar airflow, low noise levels, and space-saving designs with AC/DC/EC motor configurations. | Compare Models & Specs |
| Custom Impeller, Bracket, or Wiring | Flexible OEM/ODM custom solutions: choice of aluminum or plastic impellers, custom brackets, customized voltage options, custom wiring, and labels. | Learn More about OEM Service |
| Compliance & Appliance Safety | Full compliance with international standards, meeting major safety and electrical regulations including CE, UL, ETL, UKCA, and RoHS requirements. | Get Certificates |
| Rapid Evaluation & 24h Recommendation | Share your impeller diameter, length, target airflow, and installation space limits for rapid engineering model selection and prototype guidance. | Submit Fast Technical RFQ |
The impellers of cross flow fans are primarily constructed from aluminum alloy or engineering plastics; they are arranged within a cylindrical housing spanning the width of the fan, thereby forming an air duct. Furthermore, the fan is powered continuously by either DC or AC electricity supplied by a motor.
Air is drawn into the cross flow fans in a direction perpendicular to their axis of rotation and is subsequently discharged in that same direction—specifically, tangential to the fan blades—which is why they are also referred to as “tangential fan.” As the fan blades rotate, the air is propelled and flows laterally. The fan is capable of rotating in either a clockwise or counter-clockwise direction.
In contrast to the airflow direction of axial fans—which run parallel to their axis of rotation—the discharge mechanism of cross flow fans facilitates a more uniform distribution of airflow, making them particularly well-suited for creating air curtains.
Longwell is capable of providing customized solutions tailored to your specific requirements, no matter material, impeller size, motor type, or single-stage or configurations.
By employing high-precision bearings and ingenious structural design, Longwell successfully reduced the noise level of cross-flow fans to below 19 dB.
The cross flow fan equipped with EC/DC motors achieves up to 70% energy savings compared to normal products, fully complying with ErP environmental regulations.
Longwell consistently implements 100% quality inspection for all products. Our cross flow fans have obtained internationally recognized certifications of CE, ETL, and RoHS.
LONGWELL manufactures various cross flow fans, including: AC cross flow fans, DC cross flow fans, EC cross flow fans, cross flow impellers, elevator cross flow fans, transformer cooling cross flow fans and other cross flow fan products. Super low noise with high air flow rates and low back pressures.
Cross Flow Fan / Tangential fan – 100 % replacement solution of Fergas & German & Punker
DC12V, 24V, 48V/310V ~50/60Hz
AC115V / 230v ~50/60Hz
EC115V/230V ~50/60Hz
Designed around Longwell’s AcousticFlow™ low-noise blade technology and AcuFlow™ aerodynamic design philosophy, the cross flow fan series achieves highly uniform air distribution with significantly reduced turbulence and acoustic output. For temperature-sensitive applications, the optional ThermoFlex™ platform ensures stable performance across a wide operating range. Selected EC configurations are supported by the SmartEC™ intelligent control platform, enabling precise speed regulation and improved energy efficiency in modern HVAC systems.
Unmatched Reliability and Performance: Our EC cross-flow fans are meticulously designed to deliver superior performance and enduring reliability in the most challenging industrial environments. These innovative fans boast an array of features, making them the ideal choice for a wide range of applications.
Comprehensive Specifications:
○ Impeller Sizes: Available in a broad range of sizes (80mm – 150mm) to seamlessly integrate into compact spaces. Additionally, double impeller configurations are offered for enhanced airflow.
○ Material: Constructed from lightweight yet robust aluminum alloy, the impellers and housings offer an optimal balance of durability, weight efficiency, and performance.
○ Bearings: Equipped with premium ball bearings that minimize friction, resulting in reduced wear and tear and smooth operation even in demanding environments.
○ Operating Voltages: Operating voltage 230V, can be customized to meet various application requirements.
○ Operating Temperature Range: Function seamlessly across a wide temperature spectrum (-20°C to 60°C), ensuring consistent performance in diverse operating conditions.
○ Safety and Compliance: All fans adhere to strict RoHS compliance and are protected for impedance, guaranteeing safe and reliable operation.
○ Uniform, Broad Airflow: Engineered to generate expansive yet uniform airflow patterns. The tangential flow design ensures consistent air distribution across a broad area, making them ideal for applications requiring efficient cooling.
○ Diverse Applications: The uniform airflow pattern makes these tangential blower fans highly sought-after for HVAC systems, cooling electronic components, and various other applications.
○ Optimal Heat Dissipation: The wide airflow distribution and laminar flow characteristics of EC cross-flow fans effectively dissipate heat from heat-generating components, maintaining optimal operating temperatures. This translates to extended lifespan, enhanced reliability, and improved performance for electronic devices, industrial machinery, and other heat-sensitive equipment.
○ Quiet Operation: Equipped with brushless EC motors, these fans deliver exceptionally quiet operation. The combined design of the brushless motor and fan ensures smooth and silent performance, making them perfect for noise-sensitive environments in both commercial and industrial settings.
○ Energy Efficiency: Powered by efficient DC motors, these fans offer precise airflow control and the ability to operate at variable speeds. This feature allows for optimized energy consumption, minimizing running costs.
○ Specifications: 30*L, 40*L, 43*L, 45*L, 50*L, 60*L, 65*L, 80*L, 90*L, 100*L, 110*L, 120*L, 150*L, 180*L, 200*L ( 100≤L≤1200
○ Material: Aluminum Alloy / ABS Plastic
○ Diameter of Hub: 6mm, 8mm, 10mm, 12mm, 12.7mm
○ Diameter of Shaft: 6mm, 8mm, 10mm, 12mm
○ Applications: Air curtain, electrical fireplace, warmer, Floor heating, Cooling equipments, Air conditioning
● Airflow Direction
For axial fans, the direction of airflow is parallel to the axis of the blades.
In centrifugal fans, gas is drawn in parallel to the main shaft; it is then accelerated by the rapidly rotating impeller, subsequently changes direction, and exits perpendicular to the main shaft.
The airflow direction of cross flow fans is unique. The airflow is perpendicular to the motor axis and passes through the fan impeller twice—first entering radially into the blades from one side, traversing the internal space, and then exiting radially from the other side. Both the intake and exhaust directions lie within the same plane.
● Performance
The primary advantage of axial fans lies in their ability to deliver extremely high airflow volume, though the air pressure generated is relatively low. Their blade cross-sections typically feature an airfoil profile, directing air in a straight line.
Centrifugal fans typically feature an external volute casing and generate high air pressure. Their core operating principle involves converting kinetic energy into pressure energy. (Naturally, we also offer plug fans options for your selection.)
Cross flow fans employ a multi-blade, long-cylindrical design with forward-curved blades, capable of generating a broad, uniformly distributed “wall of air.” They feature a simple structure, a compact footprint, a long air-delivery distance, and extremely low operational noise levels.
● Common Applications
Axial Fans: Everyday household electric fans, cooling fans for outdoor air conditioning units, ventilation for electrical control cabinets, cooling systems for vending machines, etc.
Centrifugal Fans: Scenarios requiring high air pressure or the ability to overcome high system resistance—such as ventilation and dust removal in factories, mines, and tunnels; induced draft for industrial boilers and furnaces; fireplaces; range hoods; air conditioning filtration systems; printing machinery; etc.
Cross Flow Fans: Air curtains installed above the entrances of shopping malls and supermarkets; floor-standing convection heaters; pellet stoves; indoor units of wall-mounted air conditioners; hair dryers; and various other household appliances where low noise operation is a priority.
Equipped with advanced assembly lines and massive inventory, we are ready to fulfill your high-volume OEM/ODM orders worldwide.
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🏭 Why Choose LONGWELL Fans? As a leading manufacturer since 1990, we provide EC/AC/DC fans with up to 90% motor efficiency, trusted by Fortune 500 companies globally — with ISO9001, CE, RoHS, ETL, FCC & BSCI certifications.
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Born for High-Quality Breathing — LONGWELL Fans Power Your Equipments
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Please refer to the wiring diagram of dc tangential fan series below:
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%
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.
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.
