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Anyone recognise this spindle taper?

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  • Anyone recognise this spindle taper?

    approx 7 degree taper, short nose with a max dia of approx 4.235", four 1/2" studs on 5.125" dia?
    It's on a fancy faceplate/boring table, the answer is academic really as I'm making up a lathe backplate to fit it.
    I'm just curious as to whether it's an old standard, or maybe a special for a special machine, it doesn't seem to fit with any of the current standards.

    Thanks

    Tim

  • #2
    A1-5, maybe?
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    • #3
      Originally posted by SGW
      A1-5, maybe?
      No, it comes somewhere between A1-5 and A1-6, plus the tapered spindle nose would be a bit shorter than those.

      The threads on the faceplate are 1/2" BSF, though of course that has no direct bearing on the spindle spec.

      Thanks
      Tim

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