What is the difference between circular runout and total runout?

Answer Posted / prasanna

The difference between circular and total runout tolerances is that circular runout tolerances only apply to each cross-section separately while total runout is measured over the entire feature.
Runout tolerances are usually applied to parts that rotate around an axis of rotation which
constitutes datum and can generally be described as a tolerance for how much a surface may vary during one revolution.

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