- Joined
- Feb 8, 2016
- Messages
- 22
I added some 4" chucks to mine but I keep keeping vibrations over 500 rpm. I've faced the spindle, backplate and the back of the chuck and I even took a skim cut on the OD and faced the front of the chuck. I'm at .001 runout when indicated on top of the chuck when spun at 300 rpm. It gets pretty violent over 500. Shakes machine. I've ran some screws through the chip tray to firm it up. I still have the rubber pads on bottom. It's the same issue with the new 3 jaw and 4 jaw. Backplates and chucks came from little machine shop. Any help would be appreciated.
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