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Just order a complete set from Hardinge. 33 pieces is $1234.00. ShopHardinge - 09020700000000
Looks like Hardinge is still selling the super accuracy 5C collets, I'll likely go that route. Thanks to all for the excellent suggestions.
I only bought 1 of the special accuracy 5C for a specific repeat job. Rest of my set seems to always have been under .0005"tir.
Maybe double check with Hardinge what their current tolerance on both of these are.
The man spent a lot of money on some very fine equipment , he wants collets of equal quality/spec.
Doesn’t matter if it makes sense to anyone but him - I definitely get it, if I was rich I’d be doing the same thing, I’d probably have a Deckel on a mirror in my living room, along with the Bugatti Veyron and Ducati
Looking to buy a complete set of inch 5C collets, who can you recommend that is making the highest quality at this time?
Have noticed that the Hardinge collets have more spring action to them compared with others.
Even so.. poor spring action on a(ny) "spring" collet is a b***dy nuisance, can mess-up cycle time, lead to scrap & crashes,
BUT... it does NOT mean a cheaper collet will not grip tightly and center accurately, does it?
Seems better to sometimes have a gooder fit than the wronger size... or nothing even close?
It ain't whether our personal choicies for wish-list are righteous or not.
The problem with cheap collets that don't much or any spring action is that putting or withdrawing the material from the collet scratches the material. Nothing worse than finding scratch marks on nicely ground/turned diameters. A cheap collet that grips tightly (no reason it shouldn't) and has an acceptable runout isn't much good in my book if it leaves marks on the part.
Collets that dont have spring action I jam o-ring cord in the slot to give it some spring action. Works ok on large diameter collets, not so much on smaller diameters
I have some experience with 5c collets.
I looked at the Royal site, it appears they are moving to other systems. Years ago, I purchased a set of high accuracy Royal 5c collets for tool grinding, but they do not offer those anymore.
I had a job of modifying an existing part, the tolerance was, must be better then .0002" concentric to the original part. I copied a then available Adjustable for Run-out CNC 5c collet chuck. It adjust much like a Buck set-true 3 jaw chuck.
I adapted the adjustable 5c collet chuck to this small lathe, also using a hand wheel closer, a combination that simply can be dialed in true.
collet chuck in the tailstock also
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