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Reversible Tapping Heads

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  • Reversible Tapping Heads

    Most of the tapping heads for sale, Im interested in, have a 6JT mount but a MT, R8, JT, or other shank. Ill need a 1/2 shank. How difficult is it to remove the arbor from these?

    STM tapping heads- are they Czech ?

  • #2
    Dunno 'bout STM brand.

    I bought this one at Enco during a 20% off sale http://www.use-enco.com/CGI/INSRIT?P...PMPXNO=8428566 and a 1/2" straight to 6JT arbor on eBay. It's a genuine Jacobs brand & was inexpensive. Just search for "6JT to straight."

    1/2" is fairly puny looking to me & I wish I'd have gotten a 3/4" or 5/8" to fit an R-8 collet but at the time I was gearing up for a big job and was going to use the T/Head in my drill press with 1/2" chuck. The job got put on hold until late this year (I hope they don't back out!) and I haven't even tried it yet.

    Good luck!
    Milton

    "Accuracy is the sum total of your compensating mistakes."

    "The thing I hate about an argument is that it always interrupts a discussion." G. K. Chesterton

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    • #3
      Thanks for bringin that up. Its supposed to be 3/4. Almost made a bad mistake. I have the TTS setup.

      If I buy a used one w/ a diff shank, how hard is it to remove the arbor. My Jacobs chucks are nearly impossible.
      Last edited by kNucKlbustr; 06-15-2012, 12:34 AM.

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      • #4
        I don't have any experience removing a 6JT. Surely the tapping head manuf. has some instructions on how to do it?? I'll look at mine this weekend when I get out in the shop and see if there's a provision for arbor removal.

        Maybe warm up the head with a heat gun, then soak the shank in a dry ice/alchohol bath for a bit and whack the back side of the head with a lead hammer??
        Milton

        "Accuracy is the sum total of your compensating mistakes."

        "The thing I hate about an argument is that it always interrupts a discussion." G. K. Chesterton

        Comment


        • #5
          Drill shank

          There are wedges that come in different sizes for that job. They are shaped like a tuning fork to go around the shank. You use 2 of the same ones together to make a sort of adjustable parallel. When you squeeze them together they get thicker and wedge the shank out of the drill chuck, tapping head or whatever.

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