Drill press help! My ignorance is showing!

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Forum topic by Milo posted 10-11-2009 02:00 PM 1883 views 0 times favorited 7 replies Add to Favorites Watch
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869 posts in 2743 days

10-11-2009 02:00 PM

Yesterday the chuck on my older delta drill press fell off. Having only had my Shopsmith as a drill press in the past, I expected to just put it back on using a set screw. NOPE. No set screw, no nuthin’! What keeps it on?

Could someone please enlighten me about how to put the chuck back on?

Thank you!


-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

7 replies so far

View CharlieM1958's profile


16229 posts in 3643 days

#1 posted 10-11-2009 03:47 PM

Skeez is right (except for spelling). It’s a Morse taper, and like he said, be sure the surfaces are completely clean and oil-free when you tap it on.

-- Charlie M. "Woodworking - patience = firewood"

View Milo's profile


869 posts in 2743 days

#2 posted 10-12-2009 12:31 AM

A morris taper? A taper, as in “it tapers in…”? So I don’t need to do anything except clean the chuck and the arbor of the drill press and tap the chuck back on?

OK, while I’ve got people answering Drill press question, I’ve always felt this drill press didn’t drill “true” straight up and down.

Could this have been because a past owner hammered the chuck back on?

Will “pressing” it back on fix the problem?

If not, is this the time to fix the problem, and if so, how?

Thanks guys!

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

View a1Jim's profile


115177 posts in 3001 days

#3 posted 10-15-2009 07:16 AM


-- Custom furniture

View Scott 's profile


103 posts in 2783 days

#4 posted 10-15-2009 08:00 AM

And while were on the subject of morse tappers you may have wondered what that flat piece of steel that also tappers down is for. It’s a key and on alot of drill presses it is attached by a chain. That goes into the slot on the side of the quill (the thing that the chuck goes into) to remove the chuck after you get it seated in. If you don’t have one a large screw driver can work. Just in case you need to remove it down the road!

-- Scott, South Carolina

View jerryz's profile


164 posts in 2703 days

#5 posted 10-15-2009 08:49 AM

Apart from the explanation given above that are spot on, what we should have asked is exactly where the chuck parted from the drill press.
The drill chuck is attached to the Morse adapter via a”Pin” that is also conical, it could have separated here living the Morse Adapter in the Drill Press Quill.
Or the whole Morse adapter – Chuck could have fallen off.

The difference? Your chuck has a metal conical pin sticking on the back.

Here you can see some examples of that:

What you need to do is make sure that there are no nicks or deformations on the conical parts also rust will not allow the surfaces to mate properly, therefore judicios cleaning with a very fine emery cloth and WD40 to remove any traces of rust.

To reassemble a chuck that has come loose you simply put the chuck onto the morse adapter and then make it seat by rapping the assembly (morse adapter down chuck up) onto a non marring surface (a hard wood or aluminun block) a couple times should do it. Hold the assembly by the morse adapter. It is the same as when you re-seat a hammer that has come loose by rapping the handle on a hard surface, the hammer head provides the momentum to re-seat itself.

To seat the morse adapter on the quill you just hold the chuck, rotate the quill until you can see through the key hole, align the morse adapter tail so that it will go into the quill and give it a sharp and fast movement upward if it is correctly seated the chuck will not budge if you pull it…

View MattinCincy's profile


128 posts in 2577 days

#6 posted 10-15-2009 02:59 PM

One more thing to add – when tapping on the chuck to seat it, make sure that the jaws of the chuck are fully opened and inside the body so that they aren’t taking the force of the hammer blows. You should tap on the body of the chuck.

-- Wag more, bark less.

View Luke's profile


545 posts in 2718 days

#7 posted 10-21-2010 06:21 AM

did you ever come up with a solution to your running true questions? I’ve got a chuck that seems to be off and am wondering if I should buy a new chuck. follow my name to see my post about this matter. I’d love some advice.

-- LAS,

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