[SOLVED] Anyone need Hardinge 4C collets? (2023 Update)

Mike Graham had a machine that used them, I sent him a bunch of my old ones a few years ago. If you could pry him loose from the clutches of miss what-s-er-name he might still want them.

Jim

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I'd be interested in any hex or square.

I already have a full 64ths set of round ones plus some extras. If you are missing some round ones to make up a full set, let me know and I'll send you a list of my extras.

Gunner, I'd be interested in the following sizes if you have them: 1/8, 1/4, 5/16,

7/16, 1/2, and 5/8. If those are not available, I could grind some smaller ones out to desired size. Regards, Jim S.

Gunner,

My lathe uses the 4C. I will have to research what I don't have.. Any idea what is available ???

Anyone with a Hardinge Horizontal Mill with the Vertical Attachment would be very interested in these.....

Marty

Gunner wrote in

news: snipped-for-privacy@4ax.com:

Ohh. Or the poster here who *just* scored a BB4 hardinge horizontal mill! Those use 4C collets as well.

Jim

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I stumbled across a couple 5 gallon buckets full of them, in a grinding shop. They were used in some tiny little Japanese second ops lathes (one of which Im trying to score) which arnt used any longer. The customer indicated he had no use for them and would be interested in selling them off. The collets were shiney and pretty new looking, all Hardinge marked that I looked at..so Ill check with him the coming week and see what he wants to do. Just wanted to see if there was any interest before making him think too hard. I thought Id remembered seeing something about 4c collets here....

Ill follow up on this

Gunner

"Gun Control, the theory that a 110lb grandmother should fist fight a 250lb 19yr old criminal"

What is the difference between 4C and 5C? Just length?

Ted

jim rozen wrote in news: snipped-for-privacy@drn.newsguy.com:

Jim, you SUCK! :-) Marty

Ted,

Check out this site for collet sizes.

Merle

Diameter and length both. They look identical until see them together..the 4c is scaled down about 2/3rds or so.

Gunner

"Gun Control, the theory that a 110lb grandmother should fist fight a 250lb 19yr old criminal"

The cataract "C" designation basically shows the *largest* item that can possibly be held in the collet, in eights of an inch.

So the largest collet one ever sees in 5C, is 1.125 inch, even though the part won't pass all the way though.

Jim

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I would like to have a 4-C dead center. I would also like a known near perfect 1/2 or 5/8 collet. The collets I have are accurate near the headstock but long rods wave around in the breeze when checked 6 inches from the collet. I have an old S.A. Potter lathe that uses 4C. I have checked the spindle, and it is amazingly close, considering the age of the machine. However, old collets (all of mine) are treacherous. A known good 1/2 or 5/8 collet would be useful in holding tooling.

Brownnsharp

...

I guess an "eight of an inch" must be about 0.225", then, if 5 of them add up to 1.125".

^^^^^^^^???? ;-)

If 5 in 5C is the number of eights, how do you get 5/8 = 1.125?

Ted

Doh. Quarters of an inch, obviously.

Jim

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LOL. One goof and then forevermore I'll be known as the 225, eighth guy.

Of course it is quarters. You never see a 1.25 diameter

5C collet, but I understand that's what the designation means - that more or less, the collet is good up to that size.

Jim

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I must have missed the start of this thread. I could use some 4C's. Did someone have a source here?? Greg Sefton

Ive found a couple hundred or so of them. Ill post the particulars when the owner decides what he wants to do with them.

Gunner

"Gun Control, the theory that a 110lb grandmother should fist fight a 250lb 19yr old criminal"