Clausing Colchester 15 is available

The bore is 2 1/8".
Spindle is 4MT
D1-6 cam lock.
"On a lathe of that size and power, I would be looking at a used Hardinge Sjogren collet chuck set, takes 5C, 2J, 3J or 22J collets "
I know nothing about the collet options, thank you.
Now that I know what will fit, I can start watching E-bay and Craigslist.
I will also need a 4 jaw down the road.
8"??? 10"??
 
No , I wish I did own one though . ( not really because I'm downsizing) We have them at work . The Sjogren chucks are available on the Bay everyday . I have a few on there but no D1-6 s . I sold a 22j set last year and I believe the coletts went up to 2" or more . Alls I have left is a D1-8 and Lo mount Jacobs flex sets .
 
The standard collet system for the Colchester lathes is the Burnerd Multisize, no doubt because Pratt Burnerd is part of the group. However any reliable (and available) system will be OK.
 
Janderso said:
On a lathe of that size and power, I would be looking at a used Hardinge Sjogren collet chuck set, takes 5C, 2J, 3J or 22J collets
Click to expand...
Good price on the lathe if everything else checks out, I also would check threading gears to make sure they selector works for engagement.

The chances of finding a used Hardinge Sjogren 5C in a D1-6 at a reasonable price is slim to none. You would be better off fabricating a through the spindle type 5C system or going with a Bison/TMX 5C chuck set-tru with a back plate. Price wise they run around $800-900 new. The 5C is pretty common and you can get decent 5C collets sets at a reasonable through CDCO, I recommend a 1/64th. There is also 16C collet chucks from Bison/TMX but much more expensive along with the collets.

https://www.ajaxtoolsupply.com/biadfor456se.html
https://www.ajaxtoolsupply.com/bisettrucoch1.html

Lever closurer
https://www.jfkprecisionproducts.com/
https://www.roviproducts.com/collet...ed/5c-lever-activated-collet-closer-complete/

This direct mount is also a possibility although I haven't had very good luck with these Chinese chucks meeting the claimed TIR spec.
https://www.accusizetools.com/5c-5-collet-chuck-with-integral-d1-6-camlock-mounting-0269-0016/
 
Janderso said:
I assume you own one Mr. mmcmdl?
I may asking you some questions if you don't mind.
Where to get parts? Like the serpentine drive belt for one.??
How to acquire a 5C D1-6 collet chuck and quick release fixture? (I'm not sure what you call that set-up)
Thank you,
Jeff
Click to expand...
pacifica said:
So how do you measure to get a class 3 internal thread? I have no problem measuring for a class 3 external.
Click to expand...

Jeff , I don't own one . We have the 15" Colchester , a 15" Harrison ( which is identical to the Clausing ) , a 13" Colchester , and a 13" Clausing Medosa in here at work . All of them are nice . 5 grand isn't an extreme price for the right lathe , and that one looks to be in pretty good shape . If you need info , shoot me a pm and I'll walk down to the shop and pull some papers . If you did get it , congrats ! :)
 
The direct mount looks like the ticket. Less than $500.
I assumed all 5c type collet chucks went through the spindle.
For a hobby guy, no need for the extra hardware and expense.
 
Janderso said:
The direct mount looks like the ticket. Less than $500.
I assumed all 5c type collet chucks went through the spindle.
For a hobby guy, no need for the extra hardware and expense.
Click to expand...
Having a 2" spindle bore is a real asset. Try to get tooling that can use as much of the entire bore size as possible, within cost restraints. Take your time, good deals on good stuff will appear if you keep looking. 5C will not let you do that, only 1" through the collets.
 
Now I can see the limitations of a 5C.
As I move into a final solution I will be more seasoned, before I decide which spindle collet to choose thanks to this forum.
I appreciate your time,
Thank you very much.
 
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