Industrial Fan
+86-13806436611 
Tunnel fan is a specialized ventilation equipment used in underground engineering such as highways, railways, subways, water conservancy chambers, and mining tunnels to "exchange air, exhaust gas, and
01Over 700 types of wind turbine models
02Customization supported
Mingbo tunnel fans include SDF counter‑rotating axial fans for tunnel construction ventilation and SDS jet fans for permanent tunnel operation. Tunnel fans are engineered for highway, railway, water diversion and metro tunnels, delivering reliable air supply, exhaust, smoke control and hazardous gas removal in confined underground spaces.
SDF counter‑rotating fans are mainly used for tunnel excavation and construction ventilation to supply fresh air over long distances. SDS jet fans are installed on tunnel ceilings for longitudinal ventilation and emergency smoke extraction during fire events. The units can operate stably at altitudes up to 3500 m, with ambient working temperature ranging from -25℃ to +50℃.
Key Features
Counter‑rotating impeller design (SDF series):Two sets of impellers rotate in opposite directions, achieving high total pressure, large airflow and high aerodynamic efficiency, ideal for long-distance duct ventilation.
Reversible airflow (SDS jet fan): Bidirectional thrust available for normal ventilation and emergency smoke control; forward and reverse airflow nearly equivalent.
Low vibration & low noise: Precision dynamically balanced impellers; optional integrated silencers to reduce noise on site.
Robust welded steel casing: High structural rigidity, anti-corrosion coating, suitable for humid, dusty underground environments.
Reliable motor system: Pure copper winding motor, IP55 protection, Class F insulation. Explosion-proof version (BSDF) optional for gas-containing tunnels.
Easy installation & maintenance:SDF for ground mounting; SDS jet fan for overhead suspension. Compact structure, convenient inspection and spare part replacement.
Customizable:Adjustable blade angles, variable frequency drive, special voltage, high-temperature resistant and explosion-proof configurations on request.
Application Fields
Highway & railway tunnel permanent ventilation and fire smoke control
Tunnel excavation, underground construction, diversion tunnel ventilation
Metro tunnels, underground utility tunnels
Hydraulic engineering caverns
Other confined underground spaces for air exchange and toxic gas exhaust
You can also contact us for more models and support customization
You only need one phone call
Leave the rest to us
The sales team will have a detailed discussion with you
Tell us your needs
Engineers based on your requirements
Provide a reasonable solution for the demand
We will do it within a reasonable time frame
Complete with quality and quantity assurance
Any problems in the later stage are welcome
Contact the after-sales engineer
You can also contact us for more models and support customization
You only need one phone call. Leave the rest to us
The sales team will have a detailed discussion with you and tell us your needs
Engineers provide reasonable solutions based on your needs
We will complete it with high quality and quantity within a reasonable time
If there are any problems in the later stage, you can contact the after-sales engineer
+86-13806436611
