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Old 12-13-2018, 08:35 PM
terry lingle's Avatar
terry lingle terry lingle is offline
Something's Fishy ...
Join Date: Aug 2004
Location: Birch Island, BC, Canada
Posts: 5,492

The hidden issue with chuck sizing is interference as you open the jaws. it is machine dependent.
I have that issue with one of my lathes where a 10 inch chuck will open wider than a 12 inch. a larger chuck is not automatically a better fit to a lathe.
Some things to consider are weight, opening clearance, how far out from the spindle bearing you are and clearance over the cross slide.
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