Double Inlet Centrifugal Fans
BAD/BND series are double inlet centrifugal fans. The core technologies — backward curved impeller, variable width design, and high airflow capacity — enable the fan to operate in the high-efficiency zone at 50/60Hz without VFD, delivering efficient, reliable, large-scale airflow for large AHU, rooftop units, exhaust fan boxes, and industrial ventilation applications.
Contact Us Now| Parameter | BAD (Airfoil Blades) | BND (Plate Blade) |
|---|---|---|
| Type | High Efficiency Double Inlet Fan | Standard Double Inlet Fan |
| Max Pressure (Pa) | 2700 | 2700 |
| Max Air Volume (CMH) | 185,000 | 120,000 |
| Size Range (mm) | 250–1,400 | 250–1,000 |
| Impeller | 11 blades | 10 blades |
Constant impeller diameter with variable width, enabling the fan operation in high-efficiency zone at 50/60Hz without VFD.
Advanced design minimizes airflow conflict, increases pressure 7%, reduces noise 2dB, static efficiency enhance 3%.
Up to 185,000 CMH for large-scale ventilation requirements
Balanced airflow, compact structure, ideal for space-constrained installations
High efficiency, stable pressure curve, suitable for variable air volume systems
Flexible drive options based on application needs
Explosion-proof versions available (BAD-Ex/BND-Ex) for hazardous areas
International certification. AMCA Certified for air performance, CE compliant for European market standards.
Recommended: BAD
High efficiency, variable width
Recommended: BAD/BND
High airflow, compact design
Recommended: BND
Cost-effective, reliable
Recommended: BAD
High airflow, ATEX option
Recommended: BAD
Energy efficient, low noise
Recommended: BND
Economical, high volume
Choose: BAD (Airfoil blade)
Optimal for applications where operational cost reduction is essential.
Choose: BND (Plate blade)
Cost-effective solution for applications with tighter capital constraints.
Choose: BAD (185,000 CMH)
For large-scale ventilation demands requiring highest capacity.
Choose: BAD-Ex / BND-Ex
For hazardous areas requiring explosion-proof certification.
| Feature | BAD/BND Series | Typical Competitors | Advantage |
|---|---|---|---|
| Airflow Capacity | 185,000 CMH | Typically 150,000 CMH | Higher airflow |
| Width Flexibility | Variable width | Fixed width | Perfect cabinet matching |
| Blade Options | Airfoil/Plate | Single type | Efficiency vs cost options |
| ATEX Option | Available | Partial | Wider application scope |