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  1. J

    Advice powering 3-phase 440v 7.5hp lathe

    Thanks. This may be the way I would have to proceed, unless I could find the right RPC/transformer equipment used at a good price.....and that could be challenging.
  2. J

    Advice powering 3-phase 440v 7.5hp lathe

    I don't have an image and it is located some distance from where I am, unfortunately. However, I was able to get the information that is on the plate....below. Type AEEF Frame 132S Poles 4/8 Output 7.5/3.75 HP 5.5/2.8 KW Volts 440 (note there is no indication of dual voltage) HZ 60...
  3. J

    Advice powering 3-phase 440v 7.5hp lathe

    Thank you!
  4. J

    Advice powering 3-phase 440v 7.5hp lathe

    Yes, I understand that. Thank you!
  5. J

    Advice powering 3-phase 440v 7.5hp lathe

    Thank you. Good points.....extrapolating the 50A to a 15hp RPC would indicate 75A then which would be a lot. The 100A panel is about 20ft from the 200A service entrance but it is in a different part of the building with much more difficult access. When the lathe is being used the only other...
  6. J

    Advice powering 3-phase 440v 7.5hp lathe

    The noise is a consideration. I had thought about mounting placing the idler and transformer in an attic accessible via a stair way directly above the machine, or putting at least the transformer outside. Replacing the motor and coils wouldn't be that big of a job but I haven't found an...
  7. J

    Advice powering 3-phase 440v 7.5hp lathe

    Lots of good ideas......This would be a nice way to go since it wouldn't require any additional messing around with the wiring on the lathe itself. Additionally, it would be easy to add any additional 240v 3 phase machines too. I am in a rural area so it may take a bit of looking around, but the...
  8. J

    Advice powering 3-phase 440v 7.5hp lathe

    Thanks, Phil. That is another idea that could work well. It seems like there may be a few options for me to think about. John
  9. J

    Advice powering 3-phase 440v 7.5hp lathe

    Thank you! I wasn't sure how to figure the inrush demands so that makes sense. Single phase conversion could be an option I suppose, but I don't know about the two-speed issue. With a single speed motor I would lose half of my speed options.
  10. J

    Advice powering 3-phase 440v 7.5hp lathe

    Thanks. I will give that a look. I know there are some safety switches and things in the control panel, but that could be figured out with the control circuit. IF the motor can't be wired 220, the VFD could maybe be run a single speed motor at 30hz to get the other half of the speeds, if there...
  11. J

    Questions - Powering a 3-phase 440v 7.5hp lathe starting with 240v single phase

    Please disregard this thread.....I tried to post this two days ago but I couldn't see it so reposted a new thread earlier today. I don't know how to edit or delete this one. Moderator, please remove this to avoid confusion....so sorry, apologies!
  12. J

    Advice powering 3-phase 440v 7.5hp lathe

    Hi All! Looking for some advice. I may have the opportunity for a lathe that is 440/480v three phase only with a two speed 7.5 hp motor. Full load current around 10.5 amps. I don’t have three phase or 440/480 power and am wondering what my options are and if they are affordable enough to...
  13. J

    Questions - Powering a 3-phase 440v 7.5hp lathe starting with 240v single phase

    I know this is a long post but I wanted to provide as much information as I could..... I may have the opportunity for a lathe that is 440/480v three phase only with a two speed 7.5 hp motor and a small coolant pump that may or may not be used. Full load current rating is about 10.5 amps. Of...
  14. J

    SB 13 Thread Dial Questions

    Thank you. I am pretty sure it is a 6tpi, but will make sure. John
  15. J

    SB 13 Thread Dial Questions

    Hello! I am in need of a thread dial for a 13 inch SB engine lathe Ser. No. 16064T. I have seen some 3D printed models available for sale but would prefer an original cast part assembly. Some of the printed ones indicate they can be used on 13, 14.5 or 16 inch models. Does anyone know if the...

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