Regal Rexnord
Centrifugal Blowers
Regal Rexnord centrifugal blowers are belt - driven or direct - drive air - moving machines that use a rotating impeller to accelerate air radially outward, converting the kinetic energy into a significant increase in static pressure — the technology of choice for industrial applications requiring high - pressure airflow for combustion air, pneumatic conveying, drying, air - knife systems, and process air supply.Under the Fasco, Marathon, and Industrial Blower brands, our centrifugal blower portfolio spans single - stage and multi - stage designs in sizes from compact regenerative blowers to large industrial blowers capable of several thousand CFM at pressures exceeding 100 inches water gauge.Plant engineers in wastewater treatment(aeration blowers), food processing(drying and blow - off), printing(sheet separation), and chemical manufacturing(process air) select Regal Rexnord centrifugal blowers for their ability to deliver consistent, pulsation - free pressurized air flow under continuous operation.With cast - aluminum and fabricated - steel housing options, belt - drive flexibility for speed tuning, and direct - drive configurations that eliminate belt maintenance, our centrifugal blowers provide the pressure capability and durability that process - air applications require.
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High - Static - Pressure Capability
Centrifugal impeller design develops pressures from 10 to 100 + inches water gauge — essential for air - knife, pneumatic conveying, and aeration diffuser applications that axial fans cannot support.
Belt - Drive Speed Tuning Flexibility
Belt - driven blowers allow field speed adjustment by sheave change, enabling precise airflow / pressure matching to the application without damper throttling inefficiency.
Direct - Drive & Regenerative Configurations
Direct - drive blowers eliminate belt maintenance for clean, accessible installations; regenerative blowers provide oil - free, pulsation - free air for sensitive processes.
Heavy - Duty Welded Housing Construction
Fabricated steel housings with continuous welds and flanged connections for the rigidity and leak - tightness required in industrial process - air systems.
Pulsation - Free Oil - Less Air Delivery
Unlike reciprocating compressors, centrifugal blowers deliver continuous, non - pulsating airflow without oil carryover — critical for food - contact, electronics, and pharmaceutical processes.
Multiple Inlet / Outlet Rotation Options
Standard housings can be field - configured to multiple discharge directions, reducing the need for custom ductwork and enabling blower integration into space - constrained equipment layouts.
Blowers for Wastewater Aeration & Pneumatic Conveying
Municipal and industrial wastewater treatment plants rely on centrifugal blowers to supply the high - volume, moderate - pressure air needed for diffused aeration in activated - sludge processes.The reliability of these blowers is essential — a blower outage that stops aeration can cause permit violations and biological - process upsets within hours.Regal Rexnord centrifugal blowers for wastewater service feature corrosion - resistant materials suitable for the humid, often chemically aggressive atmosphere of a treatment plant blower room, with TEFC motors and sealed bearings that survive the 24 / 7 / 365 duty cycle.In pneumatic conveying — moving cement, flour, plastic pellets, or grain through pipelines — our higher - pressure blower designs provide the conveying air velocity that keeps product suspended without plugging.The belt - drive speed - tunability of these blowers enables system optimization as conveying distances and product characteristics vary between installations.
Centrifugal Blower Maintenance & Efficiency Best Practices
While centrifugal blowers are inherently robust, their energy consumption and service life depend heavily on proper system design and maintenance.Inlet filters must be cleaned or replaced on a schedule that prevents the pressure drop increase that wastes blower energy.Belt tension on belt - driven units should be checked monthly — loose belts slip and waste energy, while over - tightened belts accelerate bearing wear.Inlet and discharge dampers should be adjusted to operate the blower at its Best Efficiency Point(BEP); throttling dampers are the most common source of blower energy waste.Regal Rexnord offers blower - system audits that measure actual operating airflow, pressure, and power consumption against the blower performance curve, identifying the adjustments and upgrades that reduce energy cost and extend blower service life.In many cases, retrofitting a throttle - controlled blower with a VFD speed control can reduce energy consumption by 30 % to 50 %.