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Thread: Runout Inspection between Hole and Arc

  1. #1
    Associate Engineer
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    Jul 2014
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    Runout Inspection between Hole and Arc

    We have one part with a hole of 0.126" dia and an 0.155" radius portion for a length of 30 deg included angle on the same center. Customer asks for a requirement of Radial runout of 0.003" for Arc wrt 0.126"dia hole.

    My question is, Is it advisable to check runout between hole and Arc which have 30deg included angle?

    Your fast responses are most welcome..

    Regards,
    S.John Jeya Balan

  2. #2
    Administrator Kelly Bramble's Avatar
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    Bold Springs, GA
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    Quote Originally Posted by John.S View Post
    My question is, Is it advisable to check runout between hole and Arc which have 30deg included angle?
    If the runout variations are critical to the fit, form and function of the part feature and mating feature it is.
    Last edited by Kelly Bramble; 07-15-2014 at 08:42 AM.

  3. #3
    Associate Engineer
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    Thanks Kelly Bramble,

    But we are facing lot of difficulties during inspection of runout in this arc because of the arc length is very minimum. So we are unable to find any runout issue. But actually the part have a concentricity of up to 0.011" whereas the runout measures 0.017". Parts measured in CMM since there is no possibility to measure this runout by 1st principle method.

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