Hi, Just bought a new C4 from Ebay in the Uk. Have just finnished removing all the red grease,adjusting gibs, backlash and oiling etc. When I went to start machining a small length of aluminium bar I had problems centering it. I thought the problem was maybe the internal jaws on the 3 jaw chuck weren't ground parallel. I have since measured the 'T.I.R' with a dial indicator and then a dial test indicator and the spindle was out by 0.25mm! I have emailed the company I bought it from and I'm still waiting to hear back.
I can only asume ether the spindle hasn't been machined correctly or it's down to the tapered bearings or the the point at which they mount in the head. All of these problems would need a full strip down to fix.
This is my first ever lathe so any help or advice would be greatly appreciated. Thanks