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Highlights at a glance
LONGWELL DC Cross Flow Fans-Efficient, Quiet & Versatile Cooling
Advanced 3-Phase BLDC Motor:High efficiency with low power consumption. Available in 12V and 24V DC options.
Flexible Speed Control & Monitoring:0-10V analog input or PWM control for precise airflow adjustment. FG signal output for real-time speed feedback. Easy integration with smart controllers and IoT systems.
Wide Range of Models to Fit Any Application:Over 70 models across LWCD-30, 40, 43, 50, 60, 65, 120, and 150 series. Airflow from 26 m³/h up to 1900 m³/h; static pressure up to 1350 Pa. Single, double, and triple blower configurations available.
Ultra-Low Noise Operation:Noise levels as low as 26 dB(A) in LWCD-30 series. Ideal for noise-sensitive environments like offices, medical equipment, and home appliances.
Robust Construction for Long Service Life:Housing: Steel end brackets with aluminum alloy casing. Impeller: Durable aluminum alloy blades. Class B insulation, ball bearings, operating temperature -25°C to +60°C.
Safety & Customization Options:Available with or without safety grid (G and N codes). OEM/ODM customization available upon request.
Applications of DC cross-flow fans:HVAC systems, air curtains, air purifiers, refrigeration display cases, electronic cabinet cooling, vending machines, Floor heating & Trench heating, Fireplace ventilation, Transportation ventilation, Refrigerator cooling, Servers cooling, Disinfection and sterilization,Equipments cooling, 3D Printer, Evelator ventilation, Growing plant ventilation, Air conditioning system.
About this supplier
LONGWELL is a globally recognized fan manufacturer,specializing in high-performance EC/DC/AC fans,blowers,and motor systems for HVACR applications.With over 20 years of export experience and millions of units produced annually,we deliver reliable airflow solutions to OEMs in more than 30 countries. Our extensive product range includes centrifugal fans,axial fans,cross-flow fans,forward curved blowers,and ECM motors widely used in AHUs,FFUs,purifiers,heating systems,and industrial ventilation.We are certified to ISO9001,ISO14001,BSCI, CE,UL/ETL,FCC,and RoHS standards,ensuring full compliance across global markets. As an innovation-driven company,Longwell integrates aerodynamic design,CFD simulation,and custom engineering to meet specific client needs.Backed by advanced R&D labs,flexible manufacturing,and a global sales network across 8 regions,we respond quickly with tailored fan solutions built for efficiency,durability,and compliance. Our 40,000 sqm Smart Factory produces 1M+ fans yearly with 100% balancing and performance testing. We have B&K noise lab, CFD simulation, aerodynamic test chamber, and robotic injection molding. Every fan meets declared air volume and pressure curve. We offer real OEM/ODM: custom cable length, connector, terminal coating, frame color, and private labeling. In-house mold shop cuts lead time by 3-5 weeks. Free pre-production samples with test reports for qualified buyers. Traceable batch management from raw material to finished goods. Each fan has a unique serial number. 12-month warranty and 48-hour video technical support. Audited by Fortune 500 HVAC brands. 92% customer retention rate. We are the actual manufacturer, not a trading company. Request a live video tour anytime. Partner with us for reliable, energy-saving fans.
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FAQs
What product series and sizes are available for LONGWELL DC cross flow fans?
The LWCD series covers rotor diameters from 30mm to 150mm (LWCD-30, 50, 60, 80, 100, 110, 120, 150), with impeller lengths ranging from 98mm to over 1,300mm. Single, double, and triple blower configurations are available for extended airflow coverage. Total airflow spans 26 m³/h to 2,500 m³/h, and static pressure ranges from 12 Pa to 320 Pa. This breadth makes the LWCD series suitable for fan coil units, air curtains, refrigeration evaporators, telecom enclosures, and industrial HVAC equipment.
What voltages are supported, and which speed control interfaces are available?
All LWCD series fans run on 12V or 24V DC depending on the series. The motor is a 3-phase BLDC (brushless DC) design for high efficiency and long service life. Standard speed control is via 0-10V analog voltage input, which is directly compatible with mainstream BAS/BMS controllers from Siemens, Honeywell, Johnson Controls, and others. PWM speed control is available as an alternative- please specify at time of order or contact sales@zjlongwell.com. All models include an FG (frequency generator)
What are the construction materials and environmental ratings?
Component:Specification Housing Steel:+ Aluminum Alloy Impeller/Blades:Aluminum Alloy Bearing:Double-sealed Ball Bearing Motor Insulation:Class B Operating Temperature:-25°C to +60°C The wide operating temperature range suits cold storage equipment, outdoor telecom enclosures, and industrial environments with significant temperature swings. The aluminum alloy impeller provides low inertia, corrosion resistance, and dimensional stability over the product lifecycle. For IP-rated or special-environ
What is the MOQ, and do you support OEM/ODM customization?
Standard MOQ is typically 50-200 units per model. Sample orders are available for evaluation prior to bulk commitment. We support full OEM and ODM programs for qualified buyers, including: Custom impeller length to match your housing Non-standard voltage or terminal/connector type Grid (suffix -G) or no-grid (suffix -N) configuration PWM or 0-10V control interface selection Custom branding, labeling, and export packaging Lead time: 3-5 weeks for standard models; 6-10 weeks for ODM projects depe
How do LWCD DC fans compare to AC cross flow fans in efficiency?
LWCD fans use 3-phase BLDC motors achieving 70-80% motor efficiency, versus 50-60% for conventional AC induction motors. Advantages: Precise variable-speed control reduces energy consumption by up to 50% under partial load Near-zero no-load losses at low speed settings Lower operating noise at partial load (6-10 dB(A) reduction vs. full speed) Longer service life due to brushless motor design and quality ball bearings
What certifications are available, and can these fans be used in CE or UL-certified end products?
Our DC cross flow fans are designed to support integration into CE-marked end products, meeting EMC and Low Voltage Directive requirements. Relevant test reports covering motor efficiency, EMI, and vibration are available upon request to support your certification process. For UL, CUL, CB, RoHS, and REACH compliance documentation, availability varies by model-please inquire with our team early in your sourcing process. We recommend sharing your target end-product certification requirements upf
What noise levels can I expect across different series?
LWCD-30 Noise:32~38 dB(A) LWCD-50 Noise:37~42 dB(A) LWCD-60 Noise:38~52 dB(A) LWCD-100 Noise:60~62 dB(A) LWCD-120 Noise:56~60 dB(A) LWCD-150 Noise:60~62 dB(A) Larger-diameter, lower-RPM designs deliver quieter operation at equivalent airflow. With 0-10V or PWM speed control, demand-based speed reduction cuts noise significantly at partial load-critical for noise-sensitive applications such as fan coil units, display refrigeration cases, and commercial
How do I request samples, place a bulk order, or get a custom quotation?
Samples – Email :sales@zjlongwell.com or Tel :0086 18358274663 with your model code or application brief. Lead time: 1-2 weeks. Bulk Quote – Send model(s), quantity, schedule, and customization needs. We return a pro-forma invoice with full specs and pricing. QC – All batches pass performance and dimensional inspection. Factory audits and third-party inspection available on request. Shipping – FOB Ningbo, CIF, DDP supported. T/T and LC accepted. Neutral or branded packaging available.
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