11-28-2009 09:30 AM
I have a Craftsman 15" drill press. The chuck has gotten out of alignment, bit wobble. Not a big deal for most drilling I do but if I'm using a forstner bit and need a particular diameter hole the wobble will expand the diameter with consequent loose fit, for instance a dowel.
I've tried to square it 3 or 4 times to no avial. The last step is to make sure the jaws are completely receded into the chuck than tap with a mallet or a block of wood and hammer.
Anyone have any suggestion how I might get the chuck and arbor to run true?
11-28-2009 11:03 AM
Hi Welcome to the WOOD Forums. First you will need to figure out if the runout is in the spindle or the chuck for sure. Use a dial indicator, if it is the spindle, it is most likely the bearings in the quill, if it is the chuck you will most likely need to replace it. but check the Morse taper for debris and seating.
11-28-2009 11:21 AM
The chuck should mount to the quill as a #2 morse taper and be self aligning. Are you sure it’s the chuck alignment and not run out?
I have found the best way to check a drill press is to extend the quill to its maximum length and check for side-to-side movement (endplay) at the chuck. A few years ago I was looking to replace my drill press and started checking around. I found the Sears models to have some plan in their floor models. Surprisingly I found the Harbor Freight models had no side-to-side play.
11-28-2009 11:39 AM
Well, I would knock the drill chuck out with a tapered wedge. Clean the male and female parts real good and then re-insert it.
If you still have run out, chuck a ground rod or a drill bit with a long shank and indicate it. Tap the chuck gently but firmly with a plastic hammer. Keep tapping the chuck till it runs true.
Now try a drill bit.
If you still have run out...you probably have a lousy drill chuck. Most drill presses come with bottom shelf drill chucks which are usually satisfactory to the week-end wood-hacker.
To the more demanding woodworker...I would recommend searching for a better drill chuck.
11-28-2009 09:27 PM
Not all Craftsman drill presses have #2 Morse tapers. I have one that the bottom end of the shaft threads into the chuck, and the chuck has a nut that screws onto the part that lowers the chuck assembly. I had the same problem, and I found that my shaft was bent. I tried to bang it straight, but I finally gave up and ordered a new one.
11-30-2009 08:13 AM
My uncle had a drill press with some runout and he got around it for a long time by using the next 64th size smaller. It would drill a 1/2 inch hole with a 31/64 bit for instance. Might get you through till you get the issue resolved. As a side note on drill presses, I bought the Rigid 15" model as it has a 3 3/4" quill travel and was between the higher end, more travel presses and the low end jobs...they seemed to have only a 2" travel. Mine had virtually no runout and the table was within .002" flat.