Need help defining technical drawing tolerance

  • Thread starter Spheric
  • Start date
  • #1
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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.

Spheric.

P.S.> I love this page
 

Answers and Replies

  • #2
2,017
85
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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