Hi folks
I'm considering machining soft jaws for a pnuematic chuck to hopefully improve concentricity.
If I wanted to grip bars from 50mm dia to about 10mm dia would three sets of jaws be enough? What I'm basically asking is are there any rules-of-thumb relating bar diameter and the amount of jaw contact / diameter?
Regards Rob
How about improving your standard jaws. Many posts here about that! I hone my hard jaws every couple of years and hols .005" which is good enough for me. I make soft jaws for each critical job that hold .0005". I bore soft jaws about .002" under dia of the workpiece.
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