Model PB: Cast Aluminum Pressure Blower

Cast Aluminum Wheel and Housing for Less Maintenance and No Rust

Cincinnati Fan manufacturers eight sizes of the Model PB Cast Aluminum Pressure Blower. Multiple wheels and inlet sizes are offered to provide extensive direct drive performance ratings.

Belt driven arrangements are available for even more flexibility.


• Capacities up to 4,500 CFM and 20″ SPWG
• Standard air stream temperatures to 150°
• Optional high temperature construction up to 400°


Temperature: See Model PBS
Pressures or CFM: See Model HP-I & Model HP-II or Model RBE




  • Cast aluminum centrifugal blower housings and wheels are natural for designers and manufacturers.
  • AMCA Type B spark resistance is standard. AMCA Type A is also easily available.
  • Self-cleaning radial wheels.
  • Eight housing sizes, multiple inlet and wheel sizes allow an easy selection of direct driven blowers with eighty-seven lines of direct drive performance ratings.
  • Round inlets and discharges easily connect to standard pipe or duct sizes with slip connections or flanges. This also allows for easy flexible hose connections.
  • Arrangement 8 units come standard with shaft/coupling guards.
  • Arrangement 9 units come standard with belt guards.


  • Spark Resistant: Model PB Pressure Blowers are AMCA Type B spark resistant. With the addition of an aluminum shaft collar and brass hardware, they will meet AMCA Type A spark resistant requirements. Standard features are much less expensive than the competition.
  • Easy Pipe or Duct Connections: All Model PB Pressure Blowers have round inlets and discharges, so a connection to a pipe or duct is easily made with slip connections or flanges. Does not require special square-to-round transitions.
  • Attractive: Cast aluminum’s natural appearance adds to the aesthetics of the equipment it is mounted on. Provides a rugged appearance and it can be brushed, buffed, or colored by anodizing. It also has excellent paint adhesion. Superior esthetics for OEM designers at no extra cost.
  • Corrosion Free: No painting is required for a maintenance-free moist environment. It will not rust.
  • Non-Toxic: Aluminum is “friendly” to foods, beverages and medicines. Model PB Pressure Blowers are used in many food processing applications where cleanliness is critical and equipment washdowns are a daily occurrence. Less expensive than stainless steel.
  • Non-Magnetic: Cast aluminum resists magnetism even in magnetic fields making it ideal in electronic applications where preventing interference is extremely important. No magnetic isolation is required.
  • Not Affected by Cold: Unlike many materials that become brittle when super cold, aluminum alloys become stronger. That makes Model PB Pressure Blowers ideal for temperatures below 0° F. It can be installed outdoors.
  • Strong: Aluminum’s strength is exhibited in products such as guard rails, truck trailers, and baseball bats. In high-speed blower wheels, aluminum is alloyed with magnesium, titanium, or other alloys for even greater strength. Provides very long service life in demanding applications.
  • Workable: Aluminum can be machined by almost every metal working process. Makes future modifications easier.

9 Standard Arrangements

Arrangement 1

Arrangement 2

Arrangement 4 (Foot & flange motor)

Arrangement 4 (Foot mounted motor)

Arrangement 4 (Flange mount-footless motor)

Arrangement 4D

Arrangement 4HM

Arrangement 8

Arrangement 9

Blower Wheels

Cast Aluminum Radial

Cast Aluminum B.C.

Optional Fabricated Steel
or Stainless Steel

Inlet/Outlet Flange

Inlet/Outlet Guard

Slide Gate Damper

Teflon Shaft Seal

Belt Guard – Standard on Arrangement 9

Inlet Filter

Shaft and/or Heat Slinger Guard

  • Pressurization
  • Electrical equipment cooling
  • Blow off systems
  • Ink drying
  • Combustion air
  • Aeration
  • Material conveying
  • Flotation
  • Dust collectors
  • Fumigation
  • Induced draft fan


Exceptional local support with over 170 experienced sales engineers in 56 offices strategically located across the U.S. and Canada to assist you.