CNC CHUCK HELP. Where can I get a chuck like this??

[bloomingtonmike]

I'd try 5c.

 

[dfwcnc]

I'm going to try this with some aluminum and see how it works.

Machine the inside first, then make up a plug to fit the inside bore with a bolt hole through it, then bolt it to a piece of aluminum or steel to do the outside work. You can make a pilot on the plug long enough to ensure concentricity by counterboring the aluminum or steel piece. If this doesn't make sense, I can give you a sketch.

I have another 5c chuck on order, and am hoping it is better than the last. Finding a 4 inch with a 5 c is difficult, especially a name brand one. They way over-charge for the 5 c adaptor. there' not a science behind creating it, but they charge like there is.

I'd try 5c.