I bought a cheap R8 collet for use in my neighbor's equally cheap
vertical mill. Surprise of the ages, it doesn't fit. I'm trying to
figure out whether the issue is collet or the mill. The problem seems
to be the groove depth. The tooling that came with the mill has a groove
that is 0.104" deep where as the collet has a groove 0.060" deep. The
collet groove is slightly wider, by less than half a thou.
What's correct? I Googled "R8 dimensions" (and standard, and drawing,
and every other combination I can think of) without luck. I'll RTFM if
I can find TFM.
16 years ago