Need help defining technical drawing tolerance

[Spheric]

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

 

[xxChrisxx]

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.