Reply by BobAnderton

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Posted on Dust Collection

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299 posts in 3302 days

#1 posted 07-21-2016 12:55 AM

Putting a higher HP motor on an impeller of a given size won’t achieve more airflow. Induction motors on dust collectors typically turn at 3400 rpm. If the impeller is bigger it will move more air but require more current (higher HP rating) to keep that RPM. A low HP motor will be paired with a small impeller since that’s what that motor can turn. If you put a higher HP motor on it it won’t turn any faster, it will just have more current carrying capacity than it needs to turn that small impeller. To get more airflow you need both a higher HP motor and a larger impeller.

-- Bob Anderton - Austin, TX - Nova 3000 lathe, Alaskan Mark III mill, Husqavarna Saw

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