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Big Drill Press Chuck


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#1 KennyP ONLINE  

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Posted September 01, 2017 - 08:45 AM

Had to take this one off to confirm it is a JT3 chuck. Ordered a new one, be here next week. It's a 3/4" (16mm) chuck. Big Momma! The old one had the jaws falling out of it! Made it hard to use!


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#2 KennyP ONLINE  

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Posted September 01, 2017 - 08:52 AM

Here's a pic of it. That's a 1/2" bit next to it.

DSCN3285.JPG


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#3 tiretrx ONLINE  

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Posted September 01, 2017 - 08:52 AM

They're pretty pricey in a Jacobs. I use them on a couple of big WWII era manual lathes.


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#4 KennyP ONLINE  

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Posted September 01, 2017 - 08:56 AM

They're pretty pricey in a Jacobs. I use them on a couple of big WWII era manual lathes.

 

I got a new one with the 3JT-2MT arbor and key for $24 to my door.


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#5 SimplyRad ONLINE  

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Posted September 01, 2017 - 09:26 AM

I should get one of those chucks. I wish I had a drill press with a #4 MT. I have some drill bits up to 2 1/4" just laying around taking up space.


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#6 tiretrx ONLINE  

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Posted September 01, 2017 - 09:34 AM

I got a new one with the 3JT-2MT arbor and key for $24 to my door.

 

And they're making a profit..........amazing.


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#7 lrhredjb OFFLINE  

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Posted September 01, 2017 - 10:02 AM

Those chucks can be fixed. Check U Tube for Mr Pete/ tubalcain vids he shows how to repair chucks.


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#8 boyscout862 ONLINE  

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Posted September 01, 2017 - 10:12 AM

I've got a 3/4" chuck on a huge portable drill. My FIL used it to bore post holes in Louisiana clay for their fences. It is know as an "arm breaker" because it really throws you when it catches on a big root. It has two handles for two men to use it. Its useless in my Connecticut rocky soil but I did find a base to mount it on for acting like a drillpress. Someday, I may need it. When needing machine tooling, I usually check with Wholesale Tool. I used to get some good deals out of them, especially in their miscellaneous surplus stuff. Good Luck, Rick


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#9 secondtry ONLINE  

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Posted September 01, 2017 - 11:19 AM

I've got a 3/4" chuck on a huge portable drill. My FIL used it to bore post holes in Louisiana clay for their fences. It is know as an "arm breaker" because it really throws you when it catches on a big root. It has two handles for two men to use it. Its useless in my Connecticut rocky soil but I did find a base to mount it on for acting like a drillpress. Someday, I may need it. When needing machine tooling, I usually check with Wholesale Tool. I used to get some good deals out of them, especially in their miscellaneous surplus stuff. Good Luck, Rick

We called them gut busters in the ship yard. Don


Edited by secondtry, September 01, 2017 - 11:19 AM.

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#10 KennyP ONLINE  

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Posted September 01, 2017 - 11:38 AM

Those chucks can be fixed. Check U Tube for Mr Pete/ tubalcain vids he shows how to repair chucks.

I checked that out! Took this one apart and the ring has some bad threads. I could find a rebuild kit, but that's probably quite expensive. I do use this old drill a lot in my projects, but not like a machine shop would use one.


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#11 KennyP ONLINE  

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Posted September 05, 2017 - 12:29 PM

Got the new chuck today! Nice junk of metal!

DSCN3294.JPG     DSCN3295.JPG

 

Now to put it on.


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