Removing the chuck from the drill press

[Sparweb]

I also noticed a tiny hole in the middle of the chuck. About 1/8". Too small for anything to fasten through and no sign of any fasteners tapped into the arbor.

 

[Sparweb]

Hey, I found it:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

http://www.jacobschuck.com/keyed-chucks/jacobs-chuck-jcm6309-36-3-plain-bearing-heavy-duty-3-4-chuck.html

Jacobs Taper #3.
Is that the same as a Morse Taper #3? Just shorter...? Yeah... the first place to look is Machinery's Handbook, as always... I'll be back.

 

[mickri]

Is there a slot in the quill? A wedge in the slot will pop the arbor out of the quill.



Jacobs tapers are different from morse tapers.

 

[mmcmdl]

Drift pin will pop the arbor out of the quill .

 

[Nogoingback]

The Jacobs catalog lists the Model 36 as a 3JT mount.
There is a 36B listed as a thread mount. In fact, all the thread mount chucks have a B added to the
model number.

 

[Sparweb]

Is there a slot in the quill? A wedge in the slot will pop the arbor out of the quill.
Jacobs tapers are different from morse tapers.

Thank you - Yes, just like that.
But I seriously don't have a drift that will get it out. I tried making a tapered tool with a bar of CRS and now I have a tapered bar of CRS with a banged-up notch in it. I'll buy a drift or maybe rework this piece of flat bar. It would be a good refresher on the art of heat treating and quenching. Someday I will need to get the arbor out. For now, having the chuck off is all I'm worried about.

Of course, as I mentioned before, I NOW have to clean up the nasty surface, before putting it back on!

 

[matthewsx]

go forward with removing the arbor, trying to clean it up and fit another chuck is likely to be an exercise in frustration. That arbor will pop out with the right wedge and you can get one for just a few bucks. then purchase a new arbor with your new chuck and make sure the taper in your quill is clean before installing them.

There are few things more frustrating than having a chuck come loose while drilling....


John

 

[Braeden P]

Dunno, it's a benchtop Delta. I will post photos. Thanks for the advice on the strap wrench needs, makes sense.

another good tip is to turn it the way to tighten it then really fast go the way to loosen it and dont hold the top part only the bottom and the harder it is to twist the better.

 

[mickri]

Get a wedge. They are only a couple of dollars. Before getting a wedge I used whatever was handy. The results were typical of your CRS experience. Once you do get it out it will be easier to remove it in the future. My drill presses have a MT2 taper which is the same as the taper on the tailstock on the lathe. So I am routinely switching the chuck from one drill press to the lathe. The wedge makes this easy.