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Dayton 12 inch propeller fan blade, spark resistant cast aluminium, four blades, half inch bore, clockwise rotation

Dayton

Dayton 3GRE2 12 in Propeller, 1/2 in Bore, 2320 CFM

SKU CH-XHGX-BE5Y0

A 12-inch, four-blade replacement propeller with a 1/2-inch bore moves 2320 CFM at free air and 2080 CFM at .250-inch static pressure

  • Product typeClosed Base
  • Delivers 2320 CFM at zero static pressure
  • Maintains 2200 CFM at .125 in. SP for ducted runs
  • Still moves 2080 CFM at .250 in. SP under load
  • Four-blade cast-aluminium design resists sparks in hazardous areas
  • Fits 1/2 in. bore shafts with two set screws for secure mounting

12-inch Closed-Base Propeller

The Dayton 3GRE2 is a 12-inch replacement propeller with a 1/2-inch bore designed for clockwise rotation facing discharge. It features four spark-resistant cast-aluminium blades set at a 35-degree pitch and secured with two set screws. The closed-base construction suits direct-drive motor mounting in industrial ventilation equipment.

Installers replacing a worn propeller on a 3/4 HP

This propeller matches the original specifications for 3/4 HP motors operating up to 3,450 RPM. Buyers needing a different bore diameter, counter-clockwise rotation or a higher blade count should look at other models. The fixed 35-degree pitch also means it cannot be adjusted for varying static-pressure requirements.

Airflow performance at measured static pressures

At zero static pressure the propeller delivers 2,320 CFM, falling to 2,080 CFM at .125 in SP, 930 CFM at .250 in SP and 320 CFM at .375 in SP. Selecting this part depends on matching those CFM figures to the system curve of the application.

How it compares

Measured against everything we stock in Fan Motors, Parts & Clip-On Fans, at today’s prices. Recalculated every night.

Price $95.99
Pricier than about 66% of the 473 comparable items (median $38.99).

Specifications

Product
Brand nameDAYTON
Product typeClosed Base

Questions about this item

What bore size and set-screw count does the 12 in propeller need for the motor shaft?

The propeller has a 1/2 in bore and uses two set screws to secure it to the motor shaft.

How do I orient the 12 in propeller during installation, and what is the common mistake?

Install it so the blades rotate clockwise when facing the discharge side; the common mistake is mounting it backwards, which reverses airflow.

When should I replace the spark-resistant cast-aluminium blades on this 12 in propeller?

Replace the propeller if any blade shows cracks, corrosion or deformation, or if vibration appears after the two set screws are properly tightened.

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