This article's table of contents introduction:
- What is a "4-10 Series" Fan?
- Technical Specifications (Typical for a 40" Backward Curve Fan)
- Key Features & Benefits (Why choose this fan?)
- Common Industrial Applications
- How to Confirm Your Exact Model & Purchase
Based on your query, it appears you are looking for a specific type of industrial fan, likely for a material handling, dust collection, or high-pressure HVAC system.
The description "4-10 Series," "High Flow Rate," "High Efficiency," "Backward Curve Blade," and "Industrial Applications" points to a standardized fan design. Backward Curve (BC) fans are the industry standard for clean air and material handling due to their non-overloading horsepower characteristics and high static efficiency.
Here is a breakdown of what this fan is, typical specifications for a "4-10" size, and key features.
What is a "4-10 Series" Fan?
In the fan industry (particularly following the AMCA (Air Movement and Control Association) standard arrangements), a "4-10" designation usually refers to a specific Size and Arrangement.
- Size (4): The "4" often refers to the wheel diameter (e.g., 4 inches, 40 inches? Clarification needed below).
- More likely: It is the Series number (e.g., Series 4000) or a size code.
- Most likely size: A "4-10" often decodes to 40 inches (4 = 40" diameter).
- Arrangement (10): Arrangement 10 is very specific. It means the fan wheel is overhung, with two bearings on the base (pedestal) , and the fan shaft is direct driven by a motor mounted on an adjustable base or belt-driven via sheaves. This is common for industrial exhaust and high-temperature applications.
Interpretation: You are looking for a 40-inch diameter, Backward Curve, Belt-Driven or Direct Drive fan, with bearings mounted outside the housing.
Technical Specifications (Typical for a 40" Backward Curve Fan)
| Parameter | Typical Value |
|---|---|
| Wheel Diameter | 40 inches |
| Airflow (CFM) | 10,000 – 30,000 CFM (High Flow Rate) |
| Static Pressure | 4 – 15 inches w.g. (Water Gauge) |
| Max Speed | ~1,200 RPM (Belt driven) |
| Efficiency | 75% – 85% (Static efficiency) |
| Blade Type | Backward Curved (BC) |
| Housing Material | Carbon Steel (Standard), Stainless Steel 304/316 for corrosive gases. |
Key Features & Benefits (Why choose this fan?)
- High Efficiency (Non-Overloading): Unlike forward-curved fans, the horsepower curve of a backward-curved fan peaks at a certain point and then drops off. This means the motor will not overload if the duct system is opened or the filter is clean. This saves energy and prevents motor burnout.
- High Flow Rate: The 40-inch wheel size allows for moving large volumes of air (typically 15k – 25k CFM) while maintaining high static pressure.
- Robust Construction: Arrangement 10 means the bearings are outside the airstream, allowing for operation with air temperatures up to 400°F - 600°F and protecting the bearings from dust and moisture.
- Low Noise: Backward curve blades operate more quietly than radial or forward-curved blades at the same duty point.
Common Industrial Applications
- Dust Collection Systems: For woodworking, cement, or metal grinding.
- Boiler Forced Draft (FD) / Induced Draft (ID): For combustion air or exhaust gas removal.
- HVAC Exhaust: For large commercial or industrial buildings.
- Paint Spray Booths: For consistent airflow and fume extraction.
- Material Handling (with appropriate wheel modifications).
How to Confirm Your Exact Model & Purchase
Since "4-10" is a specific shorthand, you likely need to match it to a manufacturer's product line. Common manufacturers using this type of nomenclature include:
- Greenheck (e.g., BISW or QEI series)
- New York Blower (e.g., BCS or BCIS series)
- Chicago Blower (e.g., BIBC series)
- Twin City Fan & Blower (e.g., BC series)
To ensure you get the right fan, you need to verify three things:
- Wheel Diameter: Is it 40 inches? Or is it a 4-inch wheel (micro fan)?
- Motor HP: For a 40" BC fan, expect a 15HP to 50HP motor depending on pressure requirements.
- Rotation & Discharge: Clockwise or Counter-Clockwise? Top Horizontal, Bottom Angular, etc.?
Recommendation: If you are looking for a replacement, measure the wheel diameter and check the nameplate on your current fan for the specific Manufacturer Model Number (e.g., "BISW-40").
Do you need help calculating the required CFM and static pressure for your specific application? If you provide the duct size, length, and number of filters, I can help you select the correct motor HP.
