Non-Standard 3C Collet

[Bob La Londe]

Other than making one is there any way to get a 3C collet in 5/8? I
know I could have one custom made, but that's silly. It wuld be handy
for a repetive job I am working on to do the heavy operations on the big
lathe and some lighter operations on the smaller lathe. The problem is
I have it setup with 3C collets and a closer and I absolutely hate
bolting on and unbolting a chuck on the small lathe or the mini lathe.
Its just a big pain.

Anyway, Is there any chance 5/8 is one of those out of spec sizes that
just happens to exist anyway. Like 7/16 for ER16 or 5/16 for ERll.
They are outside the spec, but they are commonly enough made that you
can hunt around and buy them for about the same size as spec size
collets. There is a enough meat on a 3C for it. It wouldn't go all the
way through, but my 1/2 inch 3C collets don't go all the way through
either.

[Bob La Londe]

Some of the typos fixed. LOL

Other than making one is there any way to get a 3C collet in 5/8? I

know I could have one custom made, but that's silly. It would be handy
for a repetitive job I am working on to do the heavy operations on the

big lathe and some lighter operations on the smaller lathe. The problem
is I have it setup with 3C collets and a closer and I absolutely hate
bolting on and unbolting a chuck on the small lathe or the mini lathe.
Its just a big pain.

Anyway, Is there any chance 5/8 is one of those out of spec sizes that

just happens to exist anyway. Like 7/16 for ER16 or 5/16 for ER11. They

are outside the spec, but they are commonly enough made that you can

hunt around and buy them for about the same price as spec size collets.

[Bob La Londe]

YOUCH!!! I found one.
https://www.amazon.com/Hardinge-Round-Smooth-Stepped-Collet/dp/B007FVVEXE
The price is... what it is.

[Jim Wilkins]

"Bob La Londe" <no...@none.com99> wrote in message
news:p3rehf$hkl$1...@gioia.aioe.org...

https://www.amazon.com/TTC-3C-STEEL-Emergency-Collet/dp/B006UHAVDS

[David Billington]

That looks like a good option but be warned you may have to change the
pins. I've bought a number of 5C emergency collets and all had oversize
pins, IIRC 3.5mm in 1/8" holes. Maybe they couldn't source the correct
size where they were made so they substituted something close.

[Bob La Londe]

That looks like a good option. I just might buy a couple of them.

[Bob La Londe]

That's a good tip. If I get some I'll see how it seats up compared to a
collet with a precision pin in it.