Ryobi DP101 bench drill press chuck is off by 1/4". How do I remove the chuck? Could it be something else causing the rotation to be so way off?

take back to HD and exchange it for a new one.

Need to know what make and model drill press you have. You could have a taper or a threaded chuck setup. If threaded it would turn opposite drilling rotation and the may be a screw inside the chuck that needs to be loosened/removed and if it is a taper you need a removal tool to pop it out with.

look inside the center of the chuck... if the is a bold inside, remove it. then place the short side of a 3/8" allen key into the chuck and tighten the chuck... then smack the allen key from the side with a hammer the same direction as forward rotation...

there is a "drift pin" that came with the tool, you would need to insert it into the slot and tap on it.

drill chucks are pressed in, and beveled. The way I found is to open the chuck and tighten it around something like a lag bolt that is firmly secured to something like a bench top, I use the telephone pole outside my garage. After secured tight, give the drill a few raps with a rubber mallet, its in there tight but will come out.

When you buy a replacement chuck it will have detailed instructions- at least Jacob's brand chucks do. Basically there is a retaining screw inside the chuck that needs to come out first- it may be left-hand threads . Then you put the short end of a 1/4" or larger allen wrench in the chuck and close it tightly. Set the drill on a bench with the chuck off of the bench and strike the allen wrench with a mallet in a counterclockwise direction. Do this several times, then you'll be able to spin the chuck off by hand. Reverse the process to install the new chuck.

First you have to determine if it is the spindle or the chuck assembly. I would go to ereplacementparts.com and look at a breakdown for this tool so you know what the parts look like and then go from there. I couldn't find the schematic on the Ryobi site.

Make sure bit doesn't have any burrs caused by slipping in a chuck.

If the jaws are rusted that will usually help but you might also try something like 3 in 1 oil also. What I would look for is at the end of the chuck body where the jaws come out is the metal flared some? Then I can usually hold the chuck collar with a pair of gloves and slowly run the jaws in and out with the power of the tool some to loosen them up. DO IT SLOWLY and use a glove.Dave

home depot replacement chuck i beleive you can also us a keyless chuck. they usually come with instructions. most have a screw at the inside of drill chuck.

tom