Bifurcated Fans
Bifurcated axial fans are direct driven axial fans where the motor is kept out of the airstream. Bifurcated Fans are useful in industrial ventilation applications where the motor is to be kept out of the airstream due to certain temperature or types of gases or fumes. They come in various constructions and sizes 12 inches up till 48 inches diameter.
A bifurcated design splits the casing so the impeller stays in the duct while the motor lives in its own separately ventilated compartment outside it, connected by a through-shaft and sealed bulkhead. The motor never touches the process air. That single change is what lets these fans hold up in tunnels, mines, and process exhaust systems where a conventional fan would burn out its bearings or windings within a couple of years.
Performance range
- Diameters from 315 mm up to 2000 mm
- Airflow up to roughly 120 m³/s
- Static pressure up to about 3,500 Pa
- Motors from 1.1 kW to 250 kW
- Standard continuous rating -20°C to 60°C; high-temperature variants rated for 200°C, 300°C, or 400°C for the duration required by fire code
- Fixed speed, two-speed, or VFD-compatible control
Key Advantages of the Bifurcated Design
- Motor isolated from hot air and contaminants
- Suitable for high-temperature ventilation
- Handles smoke, fumes, vapors, and grease-laden air
- Reduced motor overheating risk
- Longer service life in harsh industrial environments
- Lower maintenance requirements
This design makes bifurcated fans ideal for smoke extraction systems, furnace exhaust, paint booths, commercial kitchens, and chemical process ventilation.
Bifurcated Axial Fan vs Standard Axial Fan
Feature | Standard Axial Fan | Bifurcated Axial Fan |
|---|---|---|
Motor in Airflow | Yes | No |
High-Temperature Handling | Limited | Excellent |
Smoke Extraction | Not recommended | Recommended |
Grease/Fume Handling | Poor | Good |
Motor Protection | Low | High |
Industrial Furnace Use | Limited | Ideal |
Applications of Bifurcated Axial Fans
- Industrial Furnaces & Ovens- Used for hot air extraction, combustion air circulation, and process ventilation in foundries, heat-treatment plants, and thermal processing facilities.
- Smoke Extraction Systems-Suitable for fire and smoke exhaust systems in:
- Manufacturing plants
- Warehouses
- Commercial buildings
- Tunnels and utility areas
- Paint Booth & Solvent Exhaust- The isolated motor design helps protect electrical components from flammable vapors and solvent-laden air.
- Commercial Kitchen Exhaust- Handles grease-laden hot air from industrial and commercial cooking operations more reliably than standard axial fans.
- Chemical & Process Plants- Used for exhausting corrosive fumes, vapors, and heated process gases where motor protection is critical.
When your process involves hot air, smoke, fumes, or contaminated exhaust, a standard axial fan is often the wrong choice. Bifurcated Axial Fans from Atmax Filtration provide the durability, motor protection, and airflow performance required for reliable industrial ventilation under harsh operating conditions.
FREQUENTLY ASKED QUESTIONS
Standard industrial models typically handle up to 250°C continuous operation. Higher temperature designs can be engineered for specific applications.
Yes. The bifurcated casing separates the motor from the main airstream, protecting it from heat, smoke, grease, and contaminants.
Yes. SS304 and SS316 constructions are available for corrosive or hygienic applications.
Absolutely. We can select and manufacture fans based on your required CFM, static pressure, temperature, duct arrangement, and operating conditions.
Yes. Bifurcated axial fans are commonly used in smoke extraction and emergency ventilation systems because the motor is protected from the hot smoke stream.
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Key Advantages of the Bifurcated Design
- 2101 Park Ave, South Plainfield New Jersey 07080, USA
- sales@atmaxfiltration.com
- (816) 745-9994
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Atmax Filtration provides high quality dust collectors and accessories and supplies in the entire New Jersey.
For more information talk to us on (816)-745-9994 or write at sales@atmaxfiltration.com