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11" Sheldon questions

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  • 11" Sheldon questions

    Hi Folks
    I have been reading this Mag and looking at this sight for about a year when i get time, and am awed at the amount of knowlege that flies around here.I wish had time to read it all and at least retain half of it.But anyway I got a Sheldon SEWQM model lathe last year and it has the 2 1/4"x 8 Threaded spindle,but i am trying to find out for sure what the internal taper is, My guess is a #5 MT but i cant tell for sure. Dont want to buy any sleaves till i know for sure.
    PS. Couldnt get a reply from the boys over at the Sheldonlathe group. any input would be appreciated.
    Thanks
    AJ
    AJ

  • #2
    The original spindle bore is MT #5. Unless someone has gotten creative, that is what you should have.
    Jim H.

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    • #3
      Thanks for the reply.My next question is what is the best oil to run in the headstock brgs.The sheldon book just say a good grade of spindle oil, I have been using Vectra 2 way oil but i think it is too heavy for brgs, I noticed there has been alot of discussion on the topic of oils in the past.
      AJ
      AJ

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      • #4
        AJ
        Use either a tractor/hydraulic oil, an anti-wear Hydraulic, or preferably an R&O Gear & Bearing Lubricant of the specified viscosity. (ISO-68 or 20W) is common, (ISO-100 or 30W) is used in some

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        • #5
          I have a question on the subject of way oil. I took a introduction to machining class from the local junior college and we got to start and run a variety of lathes from a little one to one that had a chuck large enough to turn an engine block.
          This question didn’t come up in class because I didn’t know enough to ask it �cause I didn’t own a lathe until later.
          I have read your recommendation to purchase and use way oil, but how much should be on the ways.
          Should it be applied like a tidal wave covering everything is sight or like a drop of water in the desert..?? I don’t remember that the ways on these lathes were wet with oil.
          I don’t always have time to use my lathe so it sets covered until there is a break in my schedule and in this part of Washington State the wind blows and dust is everywhere, so it has to set dry until I need it otherwise it ends up covered with a fine grinding compound composed of dust and oil. I have used automatic transmission fluid to clean the exposed surfaces, but I’ve heard that this oil film is too thin.
          Any help would be appreciated.
          Thanks in advance.
          Jack

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