Brochure: Unique Mixer Features & Benefits For The Food Industry

The agitator shaft transfers the rotational force produced by the drive assembly to the paddles or ribbons. Assuming like materials and torque requirements, smaller diameter shafts have higher stress concentrations than larger diameter shafts. (Stress = Force / cross sectional area of material) where Force = Torque / Radius of the shaft). The main shaft should be designed to keep stress levels below the "fatigue limit" of the shaft material. Smaller diameter shafts are more likely to break due to fatigue failure than larger diameter shafts.

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