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Machine CX706 Spindle attachments

Machine
L

lucsimoneau

Well-Known Member
Hi all,
Had a few hours to play with my CX706 lathe since buying it this summer, never got around to installing the 4-Jaw chuck or the mounting plate.
Kind of a special deal compared to standard lathe spindle attachments that I'm use to so I thought I would share what I've learned.
The spindle nose has a MT4 internal taper and the following configuration:

1735353398300.png


You can attach the spindle using a special "locking ring" wish is held in place by a few M6 cap screws threading into oblong nuts on the headstock side:
1735353533110.png

The backing plate is attached to the chuck (different plate for the 3 jaw or 4 jaw chuck) using some spindle "studs" and a few M8 hex bolts as shown:
1735353698195.png
1735353767305.png

So when everything is installed, the spindle/chuck assembly looks like this (3 Jaw / 4 Jaw):
1735353845727.png
1735353904513.png

When installing the mounting plate, no backing plate is needed:
1735354011530.png


I was trying to find the actual part numbers in the CX706 manual but not much info is available concerning the chucks and locking ring.
Attached is the PDF file of the actual chucks which are SANOU K11-125 (3 jaw) and SANOU K72-125.

Merry Christmas!
 

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I have a CX706 as well. I believe this style of chuck mount is referred to as a 'bayonet mount'.

Thank you very much for the pdf. In the longer term, I'm interested in a collet chuck for the lathe and it is nice to definitive measurements of hole circles, etc.

Also, the PrecisionMatthews PM1022/PM1030 lathes are extremely similar to the CX706. PM lists a Spare Back Plate for USD $70:

Spare Back Plate, 5″ Diameter, for PM-1022V / PM-1030V Lathes – Precision Matthews Machinery Co.

www.precisionmatthews.com www.precisionmatthews.com

Note that I'm not positive it is compatible. It appears that it ought to be. Maybe. Hopefully. I've looked at it a few times and it has never actually been in stock. Right now, it says "Available on backorder" but there is no indication of when the parts are expected. One of us needs to take a chance and let the others know how it worked out! ;)

Craig
 
I also have a CX706.

I would be curious to hear the pros and cons of this setup especially in comparison to the other common spindle attachment methods?

I see some people use collet's instead of the 3 or 4 jaw chuck, would also like hear pros and cons of that approach?
 
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