
DBF Transformer Cooling Fan
Dedicated axial cooling fan for large transformers.

Axial fan for tunnels in water-conservancy dams, highways, railways, subways and related infrastructure projects.
The SDF axial fan supports tunnel ventilation for water conservancy projects, highways, railways and metro systems. Models from 3.5# to 11.2# cover airflow requirements up to 60,000 m³/h.
SDF Axial Fan belongs to Yosinda’s axial fans range. Typical uses include Tunnel ventilation for water-conservancy dams, highways, railways, subways and related projects. Tunnel and axial ventilation selection depends on the air path, required air exchange and resistance of the connected installation. Provide duct dimensions, mounting conditions and the available supply so the model can be checked for the intended ventilation duty.
Published configuration information includes Fan Diameter: 3.5#–11.2#; Air volume: 4000–60000 m³/h. Range figures cover different sizes and operating points; they should not be read as simultaneous performance for one unit. Confirm the selected fan’s performance and dimensions with our engineering team.
Manufacturing takes place in Wuhu, Anhui, China. Send the duty point, local voltage and frequency, drawings and destination with your inquiry. Yosinda can review the mechanical configuration, motor options and export packing for the order. The quotation confirms the delivery scope and applicable inspection requirements before production.
Published ranges support initial selection. Final performance and configuration are confirmed for your operating point.
| Model | SDF, 3.5#–11.2# |
|---|---|
| Airflow | 4,000–60,000 m³/h |
| Product Name | SDF Axial Fan |
|---|---|
| Application | Widely used in tunnels of water conservancy dam projects, highways, railways, subways and other projects. |
| Fan Diameter | 3.5#–11.2# |
| Catalog Note | Per the latest GB48144—2026 General Technical Requirements for Fire Fans, fan model numbers above may change. Confirm full requirements with sales prior to purchase. |
Tunnel ventilation for water-conservancy dams, highways, railways, subways and related projects.
Available options depend on the model and duty. Confirm the required configuration with our team.
Need a custom fan configuration?
Request a QuoteYosinda combines fan engineering with manufacturing in Wuhu, China. Production includes fabrication, welding, impeller balancing and assembly, followed by performance testing and final inspection. The applicable inspection scope and product certification are confirmed for each order.
Send the airflow, pressure, gas temperature, handled medium, installation space and power supply. Our team will review the duty point and confirm a suitable configuration.
Configuration options depend on the selected model. Share your target duty point so our engineers can confirm the available range.
Motor and electrical options are reviewed at quotation stage against the actual site power supply and selected fan.
OEM branding, outlet direction and mounting requirements can be discussed with our team. Available options are confirmed before production.

Dedicated axial cooling fan for large transformers.
Share the airflow, pressure, temperature, power supply and installation requirements. Our team will review the duty point with you.