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is it a morse taper? if so lower the spindle and pry through a slot to remove the spindle. then identify if the chuck is held on with a bolt, threded or pressed in. if its a pressed fit here are chuck removal tools that look like wedges that remove the chuck from the rest of the spindle
The chuck on almost all drill presses is held on by friction only by use of the tapered fit you mention. Make sure both the spildle tip and the chuck hole surfaces are completely clean and dry. Set your table so when you move the spindle down it will contact the table. With the drill OFF, put the chuck on the spindle and press it down on with the table as hard as you can without bending any handles or gears. This should be sufficient to hold it in place.
Most drill press chucks are attached via a tapered post on the back end of the chuck. This is a short post about 3/4 inch in diameter and 3/4 inch tall. This short tapered post (the taper is very slight) fits into a tapered hole. That hole is often in the end of a second a tapered shaft (usually call a taper, R8 is a common designation). That shaft is about 6 or 8 inches long and fits into another hole, much deeper of course. It is this longer taper that is meant to be disassembled routinely for inserting different tools. The short one is not meant to be routinely separated. I'm not sure which of these is giving you trouble, but in either case the key thing is that the mating surfaces be clean. The means of attachment is simply by pressing them together. If it is the short post that has come apart, clean both surfaces carefully with a clean rag - you don't want any dust or dirt at all. Open the jaws of the drill chuck all of the way so that the three jaws are retracted inside the chuck. Place the chuck on the table with table raised up enough that you can pull the drill press handle down slowly but forcefully to fully seat this taper.
On the other hand, if it is the long taper that has come apart, this taper is not so slight and it meant to be jammed together by hand. Make sure the mating surfaces are clean, align the tang (that's the top end of the taper that looks like a giant screwdriver blade) is aligned with where it will fit all of the way in, then just give it a quick jam into place by lifting it into place quite briskly.
By the way, while clean these tapered surfaces look carefully for any nicks or bumps- you will have to remove these with a small file. It's ok to have a small flat spot on the tapered post or shaft, just keep it very small.
Good luck,
I hope you found this helpful.
Al K
Some drill-to-chuck fittings are known as morris tapers, and are incredibly strong. Look in the end of your motor shaft for a screw hole. The chuck probably has a screw or bolt holding it in place once the tapers align.
If it is not reversible directions, then it probably doesn't have a screw inside the chuck holding it onto the shaft like a hand drill. Some drill presses have tapered shafts and are just held in place by friction, others are threaded. If it is threaded, then it is normal right handed thread (AS THE DRILL TURNS, IT KEEPS IT TIGHT) You can try closing the chuck all the way, and with the chuck key in the chuck, strike it with a hammer to the left.
It is possible that this machine has a solid spindle but the chuck is held on the spindle with a tapered end like a Meddings drill. to remove the chuck you will have to make up an extractor out of 2 round bars with holes in them to fit between the shaft and the chuck with bolts though the bars to which you tighten which will force the chuck off the shaft with a little help from a hammer to shock it. It is not an easy job but I would only recommend doing this if you want to change the chuck.
you dont hold it, the chuck is a taper fit and you would need wedges to remove it. the newer chuck would also have to have the same taper to work. if replacing the new chuck you would need to make sure the parts are clean, use a brake cleaner and a paper towel to clean them and then they would press together. Let me know if you still need more assistance.
is the shaft a taper, if so clean it with brake clean or equivelant and wipe dry with a paper towel and use a block of wood with the chuck jaws retracted to tap the spindle back into the drive. It should lock back in place, it is just a taper socket fit.
Yes the tapered shaft holds the chuck on. Assuming that there isn't a hole for a set screw you would 1. open the jaws of the chuck all the way, making sure they are completely recessed 2. seat the chuck on the drill press spindle/shaft as far as it will go 3. place a piece of wood (2x4) against the chuck 4. carefully drive the chuck onto the spindle by tapping the block of wood with a hammer until it is fully seated. Don't tap the chuck with a steel hammer directly, use a block of wood. Hope this helps you. Good luck
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