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40-taper arbor question

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  • 40-taper arbor question

    I have a large collection of cutters for my small horizontal mill, a fair handful of which take a 7/8" arbor.

    I've managed to locate one 7/8" arbor for a reasonable price so far (though spacers are proving somewhat more difficult) but what I'd really like to have is a 7/8" stub arbor.

    Does anyone know of an NMTB-40, 7/8" shank stub arbor? Preferably an import or at least used, so I can actually afford it?

    Doc.
    Doc's Machine. (Probably not what you expect.)

  • #2
    7/8" arbors with 7/8" shanks will not be a hot seller in 40 taper. You might as well resign yourself to making one although it will require a lot of metal removal.

    Or possibly make a 40 taper by something else adaptor to take advantage of the smaller shanks available in R8 or Morst taper f'rinstance?
    Jim H.

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    • #3
      Making one is not as hard as you might expect. Here is a pic of a 1.25 stub arbor I made.



      I made it to mount in and end mill holder. The spacers I had on hand. Yes, the nut is threaded left hand. A 7/8 would be a lot less work, I carved that one from a piece of 2" round.
      James Kilroy

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      • #4
        I have a 40 to 30 taper part maybe you could find a 30 taper arbor and use an adpter..... just a thought

        archie =) =) =)

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        • #5
          Originally posted by Doc Nickel
          I have a large collection of cutters for my small horizontal mill, a fair handful of which take a 7/8" arbor.

          I've managed to locate one 7/8" arbor for a reasonable price so far (though spacers are proving somewhat more difficult) but what I'd really like to have is a 7/8" stub arbor.

          Does anyone know of an NMTB-40, 7/8" shank stub arbor? Preferably an import or at least used, so I can actually afford it?

          Doc.
          Have you tried here Victor Machinery ?
          Last edited by thomas1; 01-19-2009, 06:39 PM.

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