The addendum circle coincides with the tops of the teeth of a gear and is concentric with the standard (reference) pitch circle and radially distant from it by the amount of the addendum. For external gears, the addendum circle lies on the outside cylinder while on internal gears the addendum circle lies on the internal cylinder.
Read more about this topic: List Of Gear Nomenclature
Famous quotes containing the word circle:
“It is a good lessonthough it may often be a hard onefor a man who has dreamed of literary fame, and of making for himself a rank among the worlds dignitaries by such means, to step aside out of the narrow circle in which his claims are recognized, and to find how utterly devoid of all significance, beyond that circle, is all that he achieves, and all he aims at.”
—Nathaniel Hawthorne (18041864)