List of Gear Nomenclature - Pitch Circle

A pitch circle (operating) is the curve of intersection of a pitch surface of revolution and a plane of rotation. It is the imaginary circle that rolls without slipping with a pitch circle of a mating gear. These are the outlines off the imaginary smooth roller or friction discs in every pair of mating gears. Many important measurements are taken on and from this circle.

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Famous quotes containing the words pitch and/or circle:

    I can’t earn my own living. I could never make anything turn into money. It’s like making fires. A careful assortment of paper, shavings, faggots and kindling nicely tipped with pitch will never light for me. I have never been present when a cigarette butt, extinct, thrown into a damp and isolated spot, started a conflagration in the California woods.
    Margaret Anderson (1886–1973)

    Every few years something new breaks into the circle of my thoughts.
    Mason Cooley (b. 1927)