TIR v/s Concentricity

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  • TIR v/s Concentricity

    Someone please explain me the diffrence between TIR and Concentricity?

    Thanks,
    Chikoo

  • #2
    TIR includes form error, concentricity does not.
    <internet bumper sticker goes here>

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    • #3
      and the cmm is crap for both, if you ask me
      sigpic.....Its called golf because all the other 4 letter words were taken

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      • #4
        I never use the runout dimension on the CMM. Don't like the concentricity one but I do use it occasionally.
        <internet bumper sticker goes here>

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        • #5
          TIR is a surface measurement. Concentricity is an axis measurement. For example, a hexagon on a shaft could have great concentricity but terrible TIR.

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          • #6
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            I felt the definition of TIR would help.
            When in doubt, post code. A second set of eyes might see something you missed.
            sigpic

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