New for 2025 is a regular feature on basic fan knowledge from Chet White, our Sales and Marketing Manager. This month we look at the various types of impellers for centrifugal fans.
Radial
Centrifugal impellers come in various styles, each with unique characteristics and applications. The radial bladed paddle wheel, the oldest style, features radial blades extending outward from the hub like wheel spokes. As the paddles rotate, they expel air and materials through the outlet. While the least efficient, this design excels at handling debris and abrasive materials. Its lack of a leading edge prevents damage, and the radial profile minimizes buildup, reducing vibration and extending the life of general-purpose fans.