BC-High Performance Blower

Dynamic Fan Corporation BC fans have single thickness curved blade wheels. BC fans are known as non-overloading fans. This means that at a given RPM the required brake horsepower will not exceed a certain maximum value, no matter where the point of fan operation is on the performance curve. This feature can prevent overloading of the motor if the system resistance is variable. The non-overloading high efficiency design generates moderate to high pressures.


BC fan wheels are designed for virtually clean air applications with very little or no particulate. They are designed to allow the wheel to perform at efficiencies equal to or better than our BI and AF fans with higher pressure capability. BC fan wheels have single thickness heavy gauge curved backward inclined blades that are continuously welded to a tapered inlet shroud and a flat backplate. Heel and tip rings are added when tip speeds require them. Taper bore steel hubs with easy release companion bushings are standard. All wheels are statically and dynamically balanced on precision electronic balancing equipment.


BC fans are available in SW (Single wide) and DW (double wide) configurations with wheel diameters from 27” to 73.25”. They are available to operate at temperatures of up to 1000 deg. F. and air flow of 5,000 to 300,000 CFM up to 22” SP for SW and 10,000 to 500,000 CFM up to 22” SP for DW. All standard AMCA arrangements are available and all performance ratings are based on tests made in accordance with AMCA standards. Sizes and performance requirements outside the standard product line are our specialty. Contact us for information.


Housings for all DFC fans are continuously welded for strength and are airtight. Extra heavy-duty steel gauges are used for superior strength with heavy-duty angles and bars added to the case for additional stiffness and support ensuring vibration free performance. Inlet cone spinnings are designed for smooth acceleration of airflow into the wheel for optimal efficiency. Continuously welded and drilled Inlet and Outlet flanges are standard on all fans. All-welded heavy-duty steel bearing pedestals maintain accurate drive alignment. We use anti-friction pillow block bearings rated for 100,000 hours (L10) of operation. Fan shafts are turned ground and polished and selected for a minimum first critical speed 33% above the maximum fan speed. Stainless Steel, Aluminum and special alloy construction is available for all fans.


  • Dynamic Fan gray enamel paint is standard
  • Shaft, belt and coupling guards are standard
  • Housing drain with plug is standard
  • Bolted access door is standard
  • All DFC fans are tested at design operating speed and trim balanced prior to shipment.


  • Custom paint
  • Epoxy coating
  • Primer only
  • Teflon coated wheels
  • Polyurethane coating
  • Hinged, flush, or raised access doors
  • Access doors with gaskets
  • High temperature construction
  • Abrasion Resistant (AR) housings and AR housing liners
  • Chromium carbide housings and chromium carbide housing liners
  • Abrasion Resistant (AR) wheel blades and AR wheel blade liners
  • Stainless steel construction
  • Special alloy construction
  • Spark resistant construction

Fan Accessories BC Fan Dimensions Fan Arrangements