Direct Drive Airfoil Plug Fan

Direct drive simplicity converts to lower initial cost and less operating expense, as there are no fan shafts, bearings, belts or guards to maintain. Plug fans utilize Chicago's quiet, efficient airfoil wheel with hyperbolic inlet cone. Exceptional rigidity is afforded by the heavy steel panel with flanged edges and gusseted motor base. Plug fans are designed for horizontal or vertical installation.


Chicago's direct drive airfoil plug fan offers a compact economical alternative to belt drive plug fans. Applications include packaged equipment for cooling, drying, dust collection, recirculation and aeration systems. For retrofit installations, the compact direct drive configuration allows greater system flexibility. When coupled with a variable frequency drive, performance is no longer limited to synchronous motor speeds.

Operating range

Maximum CFM 26,000
Maximum Static Pressure 12" wg
Maximum Temperature 180 degree Celcius
Fan Sizes 12-1/4" to 30"


  • Unhoused wheel installs inside unit with the drive panel on the outside
  • Stable air flow over entire performance range
  • Large flush mounting panels minimize panel wall loading
  • Efficient airfoil wheel has steep pressure curve that compensates for system variation
  • Spun steel wheel cone optimizes air flow
  • Rugged gusset construction with heavy gauge adjustable motor base


  • Inlet volume control
  • Housing
  • Aluminum inlet cone
  • Type "B" steel wheel
  • Fully assembled and run tested
  • Extended grease fittings
  • Panel mounting holes
  • Shipping crate
  • Slip fit inlet
  • 72% width inlet cone
  • Shaft seal
  • Mount motor base, motor and drive
  • Cone mounting hardware

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