How do I remove the chuck on this vintage Delta drill press?

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Forum topic by namrufmot posted 02-27-2016 12:40 AM 374 views 0 times favorited 8 replies Add to Favorites Watch
View namrufmot's profile


54 posts in 286 days

02-27-2016 12:40 AM

This isn’t my machine but I have the exact same model. It came with a 1/4” chuck, and I have a 1/2” waiting to go on it. How the heck do I remove this chuck?

8 replies so far

View MrUnix's profile


4028 posts in 1618 days

#1 posted 02-27-2016 12:50 AM

It is a taper fit, so smack it with a wooden mallet or use some wedges.


-- Brad in FL - To be old and wise, you must first be young and stupid

View dougsshop's profile


49 posts in 247 days

#2 posted 02-27-2016 12:51 AM

it should be on a jacobs taper. A forked wedge is used. might want to use some light oil also.

View Clarkie's profile


380 posts in 1260 days

#3 posted 02-27-2016 12:51 AM

Hello namru, I can’t see much from the picture, need a closer look at the quill. Possibly by using a wedge between the chuck and the spindle. Then again it may just be a morse taper, or threaded spindle. In any case, go to Vintage machinery, you’ll find a place for copying the owners manual for your drill and it’ll show you in the parts section. Just put OWWM in your browser and then look for the reprints, hope this helps. Have fun, make some dust.

View Clarkie's profile


380 posts in 1260 days

#4 posted 02-27-2016 12:53 AM

namru, here’s the link…

View Nubsnstubs's profile


810 posts in 1149 days

#5 posted 02-27-2016 01:07 AM

Look closely at the chuck, and read the writing on it’s walls. If it has JT followed by a number, you need the wedges to assist in removing it. If there is no writing on it, then you’re on your own.. Good luck. ........ Jerry (in Tucson)

-- Jerry (in Tucson)

View namrufmot's profile


54 posts in 286 days

#6 posted 02-27-2016 01:28 AM

It says JACOBS CHUCK No.07 Hartford CT

View namrufmot's profile


54 posts in 286 days

#7 posted 02-27-2016 03:17 PM

This thing is giving me an absolute fit I have tried to unscrew it and wedge it. Here is a close-up picture what am I doing wrong?

View Planeman40's profile


788 posts in 2180 days

#8 posted 02-27-2016 07:15 PM

The chuck has been on there for years and most likely the taper fit has seized to a degree. Put some penetrating oil on it and let it sit overnight. The next step is to buy some chuck removal wedges ( and use them as shown in this set of instructions ( Follow the tapered spindle instructions. You may have to put some wood blocks beneath the wedges to take up extra space. This is the standard way of doing this.


-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

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