The Shop > Tools
ER collet sizes
Darren:
Ah.....that's good to know.... :thumbup:
bogstandard:
I got it wrong in my above statement, I suppose because I only take notice of what I am interested in.
Similar to Shred's chart, but a little more expanded. Rooting about on the site where John is considering buying his holder from, I found the complete picture on the size range of ER collets. So I hope this is correct.
Bogs
--- Quote ---I'm not sure why they don't all go to zero,
--- End quote ---
When you fit a collet into the nut, you will find that the ones with the large holes in them go in a lot easier than the ones with the very small holes. This is all to do with deforming the collet to get it to 'snap in'. The ones with small holes have a lot more meat left in them to deform, maybe that deformation has something to do with why they can't go to zero. Without a very small hole in there (0.5mm), there would be nowhere for the deformed metal to move into while you fitted it into the nut, and so it just wouldn't be able to be fitted.
John Rudd:
Thanks for the info guys...Looks like I'm buying.... :clap:
shred:
Thanks John.. that makes sense. The little ones are tricky to get in and out of the nut. I keep my 1/32" ER16 in it's own nut for that reason. It will hold the really tiny drills since it starts a little smaller than 1mm but it's a nuisance to get in and out.
Egads, they make an ER8? I saw an ER11 the other day and first thought it might be some sort of tiny novelty joke collet. :scratch:
John Rudd:
--- Quote from: Darren on July 18, 2009, 02:07:56 PM ---Same place I got mine I think :scratch:
It's perfect :thumbup:
--- End quote ---
OK bought one...If its a pile of crap I blame Darren :lol: and I want my money back......
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