Tunnel Ventilation Fan – Industrial Axial Jet Fan for Underground Projects
Our tunnel ventilation fan is a high-performance axial flow jet fan engineered for underground infrastructure projects including highways, metro tunnels, subways, mining shafts, and large underground chambers. Designed for continuous operation under demanding conditions, it ensures reliable airflow, smoke control, and ventilation safety for workers and infrastructure alike.
Built with advanced aerodynamic design, high-efficiency motors, and durable materials, this fan meets the rigorous demands of modern tunnel projects while complying with ISO 5801, AMCA 210, CE, and ATEX/IECEx certifications. Its modular construction and customizable configurations make it an ideal choice for both new projects and retrofitting existing tunnels. 
Key Features & Benefits
High Airflow & Pressure Performance
Equipped with aerofoil impellers and streamlined casings, the fan delivers 20,000 – 300,000 m³/h airflow with static pressures up to 2,000 Pa, providing consistent and strong air circulation even in long or complex tunnel sections. This ensures proper ventilation and smoke extraction, critical for safety compliance.
Energy-Efficient & Low Noise Operation
Optimized blade geometry and precision-balanced impellers reduce turbulence and energy losses, achieving low noise levels (≤ 75 dB(A)) while consuming less power than traditional tunnel fans. This makes it suitable for projects with strict environmental or acoustic regulations.
Explosion-Proof & Fire-Resistant Design
Optional Ex d IIB T4 explosion-proof motors and F300/F400 fire-rated housings ensure safe operation in hazardous underground environments, including coal mines, chemical tunnels, and industrial subways.
Durable & Easy to Maintain
Constructed with galvanized or epoxy-coated steel, the fan is designed for 40,000+ hours of continuous operation. Modular assembly allows for fast on-site installation and maintenance, minimizing downtime and installation costs.
Customizable Configuration
Available in multiple airflow capacities, motor powers, voltage options, and fan diameters, the tunnel ventilation fan can be tailored to meet specific project requirements, whether for emergency smoke extraction, regular ventilation, or both.
Technical Specifications
| Parameter | Range / Options |
|---|---|
| Airflow Capacity | 10,000 – 300,000 m³/h |
| Static Pressure | 300 – 6,000 Pa |
| Motor Power | 4 – 250 kW |
| Voltage Options | 220V/ 380V / 660V / 1140V |
| Frequency | 50Hz / 60Hz |
| Noise Level | ≤ 75 dB(A) |
| Explosion-Proof Grade | Ex d IIB T4 (optional) |
| Fire Resistance | F300 / F400 (optional) |
| Standards Compliance | ISO 5801, AMCA 210, CE, ATEX |
Applications
Highway and road tunnels ventilation
Subway and metro station ventilation
Underground parking, logistics, and storage facilities
Mining shafts and large underground chambers
Emergency smoke extraction and fire safety systems
By providing consistent airflow, smoke management, and safe working conditions, our tunnel ventilation fans help meet national and international safety standards while optimizing operational efficiency.
Certifications & Compliance
All our tunnel ventilation fans are designed and manufactured according to international standards:
ISO 5801 – Air performance measurement
AMCA 210 – Standardized fan testing
CE Certification – Safety and quality compliance for EU projects
ATEX / IECEx – Explosion-proof compliance for hazardous environments
These certifications ensure that your project adheres to global safety regulations and can withstand harsh underground conditions.
Why Choose Our Tunnel Ventilation Fans?
Proven Reliability: Used in major infrastructure projects worldwide.
Custom Solutions: Tailored airflow, pressure, and noise configurations.
Technical Support: Guidance for installation, commissioning, and maintenance.
Fast Delivery: Global logistics network ensures timely project completion.
Contact Us
For detailed specifications, CAD drawings, or a custom quotation, contact our engineering team today. Upgrade your underground ventilation system with professional, efficient, and reliable tunnel ventilation fans designed for long-term performance and safety.
SDF Series Tunnel Ventilation Fan – Technical Specifications
| Model | Power (kW) | Speed (r/min) | Impeller Diameter (mm) | Airflow (m³/min) | Fan Pressure (Pa) | Total Length (m) |
|---|---|---|---|---|---|---|
| SDF-4 | 2×4 | 2900 | 400 | 165–110 | 375–3040 | 1.7 |
| SDF-5 | 2×5.5 | 2900 | 500 | 240–160 | 325–2540 | 1.9 |
| SDF-5 | 2×7.5 | 2900 | 500 | 260–170 | 400–3155 | 1.9 |
| SDF-5.6 | 2×11 | 2900 | 550 | 350–190 | 310–3640 | 2.2 |
| SDF-5.6 | 2×15 | 2900 | 550 | 390–270 | 380–4480 | 2.2 |
| SDF-6.3 | 2×30 | 2900 | 600 | 510–310 | 640–7310 | 2.5 |
| SDF-7.1 | 2×45 | 2900 | 700 | 690–410 | 680–8160 | 2.8 |
| SDF-8 | 2×55 | 2900 | 800 | 870–500 | 690–8230 | 3.2 |
| SDF-9 | 2×75 | 2900 | 800 | 970–560 | 850–9900 | 3.8 |
| SDF-10 | 2×55 | 1450 | 1000 | 1170–670 | 510–6100 | 4.8 |
| SDF-11 | 2×55 | 1450 | 1100 | 1580–930 | 850–6410 | 5.0 |
| SDF-12 | 2×75 | 1450 | 1200 | 1640–990 | 990–6640 | 5.0 |
| SDF-13 | 2×110 | 1450 | 1300 | 1770–1040 | 1260–6850 | 5.2 |
| SDF-14 | 2×132 | 1450 | 1400 | 1920–1270 | 1330–7200 | 5.6 |
| SDF-15 | 2×160 | 960 | 1600 | 2100–1450 | 1550–4760 | 6 |
| SDF-16 | 2×185 | 960 | 1800 | 2340–1580 | 1800–5380 | 6 |
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