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The addendum circle coincides with the tops of the teeth of a gear and is concentric with the standard 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.
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by V. B. Bhandari
Addendum Circle The addendum circle is an imaginary circle that borders the tops of gear teeth in the cross section. (xiv) Addendum (ha) The addendum ( ha) is the radial distance between the pitch and the addendum circles. Addendum ...
Bildwörterbuch Maschinenbau und Elektrotechnik by Heinz K. Flack, Georg Möllerke
addendum circle Kopfkreis (Zahnrad) add, ...
A Supplementary Wordbook to All Leading Dictionaries of the United States and Great Britain by Samuel Fallows
Addendum circle (JfecA.), the space or distance between the pitch line of a gear, and the circle touching the ends of the teeth. Ad der (ad'er), n. 1 . One who adds. 2. A calculating machine ; an abacus. Ad der (fld'er), n.— Adder-bolt, the ...
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