R8 Collets

[cathead]

I've bought my legit Hardinge and Crawford collets on Ebay. Most lightly used.
Who want's R8 collets with .008 TIR? All import, or most import collets have terrible runout.
I only buy the sizes I need and use, not a whole set., and I prefer quality tool holders. I bought the Hardinge r8 3/4" to hold my Criterion
boring head. e.g.

For holding a boring head, I can't see where it would make any difference if the collet had run out or not. A cheap import collet with
.008 run out would be capable of the same accuracy as a collet with minimal run out wouldn't it?

 

[EmilioG]

E.g. The 3/4" r8 isn't only for my boring head. I use it to hold end mills and other tools.
Lyndex has a stated spec of .0011" TIR, Crawford UK supposedly, .0004", Hardinge .0007", so what kind of runout will a cheap $5 import r8 collet have? A lot more than .001" I'm sure.

 

[cathead]

EmilioG,

Sorry, I just couldn't resist making a comment. I understand you like quality tools and that is a good thing.