Thread: Jacobs 14N jacobs chuck how remove the morse taper arbor

Hi Woodfast,
You need to make 2 matched wedges with a slot in the middle to fit over the neck of the shank, driven from each side they should pop the chuck off its taper. It's been discussed before, i'll try to find a link.
Cheers,
Ew

This should give you the right idea. https://www.woodworkforums.com/f65/chuck-wedge-147801/

Originally Posted by woodfast

Hi there I was given a big box of Morse taper drills all Sutton and P&N at the bottom of the box is a 14n Jacobs chuck but the Morse taper two is crappy and I need to change it to MT3 how is this best done

Two ways Woodfast.

The nicest way is by using wedges. The less nice way is by drilling a hole axially through the body of the chuck and belting the arbor out with a drift. A have a pair of wedges in the shed. I don't feel like getting my feet wet so if you can wait till the morning, I'll let you know then if they fit a 14N. If they do they will be in the mail to you on Monday on the condition you post the bastards back.

Bob.

ps. Ewan is younger. Hence the faster typing.

Originally Posted by Anorak Bob

Two ways Woodfast.

The nicest way is by using wedges. The less nice way is by drilling a hole axially through the body of the chuck and belting the arbor out with a drift. A have a pair of wedges in the shed. I don't feel like getting my feet wet so if you can wait till the morning, I'll let you know then if they fit a 14N. If they do they will be in the mail to you on Monday on the condition you post the bastards back.

Bob.

ps. Ewan is younger. Hence the faster typing.

Bob if the wedges are suitable I will assure you will get them back if you sent them to me to use thankyou David Jackson

Hello Woodfast,
Had to remove a broken shank (JT6) from a rock coring drill just the other day. If your arbor is U/S just cut it off near flush. You will find it case hardened but the core of it is fairly soft. Drill it out a bit undersize in the lathe, then flash some heat on the remaining shell and toss some cold water on it. The hollow stub wil fall out. Works for me,
Combustor.

Originally Posted by woodfast

Bob if the wedges are suitable I will assure you will get them back if you sent them to me to use thankyou David Jackson

David,

Unfortunately the No.2 wedges I have do not fit a 14N's 3 Jacobs 2 Morse arbor. I have drilled through all of my ball bearing chucks to facilitate arbor removal.

Bob.

Originally Posted by Anorak Bob

David,

Unfortunately the No.2 wedges I have do not fit a 14N's 3 Jacobs 2 Morse arbor. I have drilled through all of my ball bearing chucks to facilitate arbor removal.

Bob.

I have been busy making a tool to press it out I have 30 ton press I will drill it in the lathe an then press it out it should work fine

Originally Posted by Anorak Bob

David,

Unfortunately the No.2 wedges I have do not fit a 14N's 3 Jacobs 2 Morse arbor. I have drilled through all of my ball bearing chucks to facilitate arbor removal.

Bob.

Bob What size drill would you use to drill chuck through something like 3/8 or smaller