Be carefule here. Most drill presses are a friction fit. Craftsman is
notorious for doing things in a propriatary way though. Look at the
chuck and see if it has a brand on it such as jacobsen. It may be
labled MT or some such thing. MT meanse Mores Taper. MT info can be
found at http://en.wikipedia.org/wiki/Morse_taper pretty good info in
morse taper.