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Need help defining technical drawing tolerance

  1. Sep 9, 2013 #1
    Hi there,

    I have a technical drawing considering a shaft and a bearing bush (to slip on). The dawing says 85mm diameter H7s6 and I was wondering what does it mean and how can i figure out the tolerances regarding to H7s6, any mathemtical explanation or a online table to look after?

    Thanks in advance.


    P.S.> I love this page
  2. jcsd
  3. Sep 9, 2013 #2
    Google limits and fits. Should come up with loads of tables based on different standards.

    Capital letter is a hole tolerance, small letters are the shaft tolerance.

    The H7s6 is the fit.

    Which looks like a medium press fit iirc, which makes sense for a shaft and bearing.

    Ie the nominal diameter is the same, but when tolerances are applied the bearing will have a smaller diameter than the shaft.
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