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  1. castermaster

    Does a centerline datum follow a deflected shape?

    For long slender rolls, according to ASME Y14.5, does the centerline "datum" follow the natural deflection of the roll due to gravity or is it a theroretical straight line? For example, in a free state a 2" diameter roll 40" long sags about 2-3 thou under its own weight. A cylindricity req'mt...

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