I am a believer. You guys told me the best I would get is 5 tenths, and thats the best i got on a korean made hydralic lathe chuck.
Installed a new chuck today, ran it at 3 grand forward and reverse all day. Greased up good...
One thing, the jaws move forward a lot. And not the jaw, but the jaw carrier. They tip .002-.005 depending on how much pressure you use. The jaw stays strait, its not bending, its like the carriers are tipping underneith, like there's clearance.
I sure would like to see an American made chuck! I bet they don't tip 5 grand, and I bet you can acheive .0002 on bored jaws.
Looks like I'm in for another round of trying to hold a tenth as I go insane. Seems when it comes time to hold a tenth on a secondary op, or a second chucking the pressure needs to be extremely low. Rpm needs to be relatively slow, maybe nothing over a grand or so. Proberbly need some kind of low profile jaws.
Jeesh, everyone thinks this s*it is push button tenths, but damnit it's absolutely not! We aren't there yet, and if I catch a salesman saying it is he's getting an italian necktie.