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Thread: Need help - Chucking my chuck

  1. #1
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    Question Need help - Chucking my chuck

    This is a follow up to the drill press table build thread.

    The last thing I need to do to make my drill press really perform the way I need it to is replace the factory chuck. The chuck that came with the press will not accept a bit under 1/4" in diameter. Note the 5-20 MM marking.

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    I looked at the one suggested by Glenn, and I also found this one on Amazon. Looks like tha Amazon one has very good reviews and a great price.

    My dilemma, I've never replaced a chuck before. Is the taper on my press the same as mentioned in the Amazon ad? "1/32-1/2" VME Keyless Drill Chuck, 33 Jacobs Taper mount". My current chuck is labeled "J3". Is that a clue?



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    Help!
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  2. #2
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    J3 and J33 are distinct and separate taper sizes. So if you don't want to replace the taper you'll need a J3 compatible chuck.

    Honestly I'd replace both the chuck and the taper if you can, I can't tell for sure from the pics but there should be a way to be able to push the taper out of your press?

  3. #3
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    Quote Originally Posted by Rennie Heuer View Post
    ...My current chuck is labeled "J3". Is that a clue?...Help!
    J3 is a Jacobs #3 taper. It's different than J33. Your DP must be an industrial model, because most home shop DPs are J33 taper - somewhat less robust then J3.

    My Powermatic, and my Shop Fox are both J33, btw.

    In your first picture, it appears the J3 taper might be machined onto a Morse taper adapter - probably a #2 Morse. Can you remove that from the center of your quill? Usually, if it's a Morse taper adapter, lowering the quill several inches will reveal a slot that you can insert a wedge (MT Removal tool) into to remove the adapter. Your DP might have even come with that removal tool.
    Jim D.
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  4. #4
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    Need help - Chucking my chuck

    Ok. That's a start! Thanks guys. I assume you mean this
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  5. #5
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    My baby Delta and floor Delta are JT-3 and as mentioned these are different than JT-33. Your post just previous to this one is the slot where you stick the drift key if you want to remove the arbor. You just want the chuck to come off while leaving the arbor in place although sometimes it is easier to deal with the chuck with the chuck/arbor assembly out of the machine. Tapping with a sledge and a piece of wood (as a pad) on the chuck can dislodge it for you . . . . unless it is stuck. I have a Delta arbor and chuck that I never could get apart but, as the arbor was only about $9, I just bought another one for the keyless chuck.
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  6. #6
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    Yep like Glenn said

    There should have been a wedge shaped piece of metal (drift key) that came with your DP. If you stick it in that hole and give it a tap the Morris taper -> J3 taper should pop right out... hopefully

    I'm actually a little surprised that the chuck came off of the taper easily, the morris taper usually hold less aggressively than the side facing the chuck (usually one of the Jxx tapers).

  7. #7
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    Need help - Chucking my chuck

    I'll have to go looking for that. I don't remember it.
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  8. #8
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    Quote Originally Posted by Rennie Heuer View Post
    I'll have to go looking for that. I don't remember it.
    I stuck mine to my drill press with a magnet when I first got it. I knew if it wasn't attached to the drill press, I'd lose it.

    I did replace the chuck on mine. The original chuck on my DP had some runout, so I had to replace it.
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  9. #9
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    Well a replacement is $2.50 so I wouldn't sweat it to much
    http://www.amazon.com/Drift-Keys-Dro.../dp/B0083E55FA

    I have mine tied on a string hanging from the back of the press...

  10. #10
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    Don't buy a new drift key, just make one, they are very simple, a piece of 1/4" thick flat bar around 3/4" wide, maybe 6" long, then cut at an angle along one long edge, clean up with a file, drill a hole in one end to wire it to your DP when done, simple.

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    Not rocket science



    Skip to the 4:50 point to see just how easy it is to remover the taper from the DP.

    Putting a good quality chuck on your DP will make it much nicer to use all the time, a good chuck costs real money, but is worth it, IMHO, you get what you pay for!
    The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
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