SQB Centrifugal Fan

Chicago Blower's SQB is regarded as a high performance, trouble free fan proven in a myriad of industrial applications. With its backward inclined wheel and square housing design, the SQB is efficient, economical and versatile. It is also quickly available through Chicago's Stock Fan program. "Packaged" fans, those furnished with motor, V-belt drive, belt guard and other options, are factory aligned, run tested and shipped ready to install. By eliminating jobsite assembly, the packaged SQB fan can substantially reduce overall installation cost.


The SQB Type "B" wheel has backward inclined blades designed to handle corrosive or dusty airstreams. Typical applications include oven circulators, dust collector exhaust fans, fume exhausters and emissions control system. Since the blades are solid steel, the "B" wheel is ideal for custom applied corrosion resistent coatings. The SQB is also suited for high temperature gasses and air to 650. For greater safety in explosive environments, spark resistant construction is offered. The versatile SQB is furnished in 14 sizes in Arrangements 1, 9 or 9H and in three classes of construction.

Operating range

Maximum CFM 55,000
Maximum Static Pressure 15" wg
Maximum Temperature 650 degree Celcius
Fan Sizes 12-1/4" to 44-1/2"


  • Chicago type "B" wheel
  • Steep pressure characteristics
  • Rugged steel housing
  • Removable bearing brackets
  • Adjustable motor base
  • AMCA Certified Performance for air and sound
  • Greater efficiency
  • Adjustable discharge positions
  • Flanged outlet
  • Precision shafts
  • Four-way gusset


  • Punched flanged inlet
  • Housing drain
  • Inlet screen
  • Shaft cooler and guard
  • Spark resistant construction
  • Shaft seal
  • Inlet volume control
  • Companion flanges
  • Punched flanged outlet
  • Cleanout door
  • Mounted belt guard
  • Shaft and bearing guard
  • Slip fit inlet
  • Extended grease tube fittings
  • A/9 Mount motor and drive
  • Arrangement 8

Alternate Products

Greater CFM Design 10A Backward Inclined
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