Re: Relative Size of Hypoid Pinion


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Posted by BillS on March 24, 2019 at 18:27:23:

In Reply to: Re: Relative Size of Hypoid Pinion posted by Dimebag on March 24, 2019 at 13:12:08:

Hi Dimetap,
I calculated Pinion OD from BS ISO 23509:2006 pg47:

Pinion OD=dae1=(pinion pitch dia)+2 x pin addendum x cos(Pitch Angle)

Pinion OD = 3.685

[edit - I carelessly used 6.2 for DP instead of 6.25, so the OD shown will be a bit large]

Of course, this calculaed OD depends on pitch dia, addendum, and pitch angle as calculated by CPC-HYP in prior program steps.

Thanks again for steering me to ISO23509. That is the complete bevel specification, isn't it?

I didn't get the 2016 version, but considering that the specs for OD are basic, I don't imagine there were significant changes since 2006.

When I get time, I'll compare the other specs and make sure there aren't any surprises.

Thanks again!


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