Hardinge collet angles

I need to determine the collet angle on 5C and 3C collets.
I have seen the 5C quoted as 20 degrees inclusive and also 20.0334
degrees. Which is correct? Also what is the angle for a 3C?
Is there any reference that discusses a different angle for the collet
and the tapered bore that the collets mounts to?
It has been suggested that the matching tapered bore my be at a
slightly different angle to ensure that the collet is located on the
largest diameter.
Thank you
Reply to
Richard Edwards
Loading thread data ...

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.