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Steel Selecting Spindle Shafts

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  • Steel Selecting Spindle Shafts

    Need to order some steel from Speedymetals to make a couple of shafts. First is for a farm store drill press. Has some threads, two pressed on shielded bearings, splines, and a MT3 socket. About 1" X 12". The other is about the same size is a spindle for an old Dumore toolpost grinder. Two press on shielded bearings shoulders and threads both ends also 1" X 12". Want steel that is strong yet machinable with out heat treating. Which would serve me better A2, 1045, 1117 or 1215? A2 @ $14.00/ft over $4.75 for the others doesn't bother me if there is any advantage. Not building any rocket ships for NASA but don't want to skimp on material as much labor is involved.

  • #2
    1144 stressproof machines like a dream but is tough stuff. I like using it.


    • #3
      What Mike said: Speedy carries a Stressproof (1144) clone, which is partially hardened (less than 4140 Pre-Hard, for example), but machines very nicely.
      "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."


      • #4

        I would use 4340 for the grinder spindle, extremely fatigue resistant for cantilever shafts. Make sure any changes in dia. are stress relieved. slow finished radius. A sharp internal corner may cause a stress fracture.
        The difficult done right away. the impossible takes a little time.


        • #5
          Go with 1045, it's more than adequate.


          • #6
            Another vote for 1144 -- it machines to a nice finish.
            Try to make a living, not a killing. -- Utah Phillips
            Don't believe everything you know. -- Bumper sticker
            Everybody is ignorant, only on different subjects. -- Will Rogers
            There are lots of people who mistake their imagination for their memory. - Josh Billings
            Law of Logical Argument - Anything is possible if you don't know what you are talking about.
            Don't own anything you have to feed or paint. - Hood River Blackie


            • #7
              Gentlemen, thank you for your input. Keep hearing good things about the 1144 stressproof. Will give it a try. Would have tried 4340 too but they don't have it.