Tolerance details

Dear Sir,
In ISO Iso Tolerances for Holes ( ISO-286-2)
The Nominal Hole size is 80 mm,
for H7
which will be the tolerances
(0 to +35) or (0 to +30)
because in both hole groups
50 - 65
65 - 80
80 - 100
100 - 120
80 is available.
Best regards,
Reply to
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And the question is?
Reply to
Nick Müller
Can't see where the 50-65 and 100-120 come into this question, but I do see what you mean bout H7 65-80 being +30 microns and 80-100 being +35 microns.
I personally would go for the lower tolerance. or -0/+0.030.
Reply to
Wayne Weedon
The tighter tolerance is required when the nominal lies on the boundry between two ranges.
Reply to
Robin S.
Dear Sir,
Thanks for reply but my question is not yet clear.!!!!!! My question was that, for 80 mm Dia hole we should use which tolerance +30 or +35 ??? because in both groups (65 to 80) and (80 to 100) 80 mm is available.
Best regards,
_________________________________________________________________________ `Wayne Weed> > Dear Sir,
Reply to
"shafi" wrote in news:1153113789.631316.297270
Read the chart as over-including
So if your hole is 80mm, the correct tolerance is +30 Microns. Read it as over 65mm including 80mm and over 80mm including 100mm.
Sad really.
Reply to
D Murphy

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