Model HA fan is a belt drive, tubeaxial exhauster with the motor, drives and bearings located outside the airstream. This model has a max CFM of 7,128. The HA is designed to operate in any position and is furnished with mounting flanges on both ends for easy installation.

Housing

• Constructed of heavy gauge rolled steel
• Rolled flange at each end for ease of mounting
• Standard charcoal baked enamel finish provides a tough durable surface
• Gasketed access door for servicing on model sizes 42" - 60"
• Streamlined belt and bearing enclosure eliminates turbulence and air drag

Aluminum Propeller

• Heavy duty, all welded aluminum construction standard on all sizes (except 54" and all sizes of the smoke exhaust construction which use a high grade steel)
• Circular-arc blades for high airflow capacity
• Precision balanced for smooth vibration free operation

Bearings

• Permanently lubricated in an Acme D.S. pillow block housing
• Bearings are resiliently mounted in neoprene rings
• Rated at L50 life of 200,000 hours
• 5 year limited warranty on Acme D.S. pillow block bearings
• Pillow block bearings are standard on HA60 and smoke exhaust construction

Drive Assembly

• Cast iron drives sized for 150% of drive horsepower
• Static free, oil and heat resistant belts

Motors

• Continuous duty motors located outside the airstream
• Motors shipped mounted to the fan