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  1. #16
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    Quote Originally Posted by SurfinNev View Post
    Manual states 1.3:1. There were also two options for motors. 1/2 and 3/4 Hp. The 3/4 was a high speed motor which doubled the standard speeds.

    Lyle. Does you mill not have gearing on the motor?

    Nev.
    Hi Nev,
    Mine is 1/2 horse I think. My motor has a two step toothed belt pulley on the end of it. The motor itself has no internal gear reduction / stepup if thats what you mean. If I need more speed i will just drive it through a VFD and overdrive it by stepping up the frequency a bit. As it appears to have roller bearings on all the spindles so it should be fine to do this. I will get it cleaned up ind into service and see how it goes. The lack of speed would only be a problem when using endmills i would think. The gears in the vert head are 33 tooth drive and 32 tooth driven.
    Lyle.

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  3. #17
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    Quote Originally Posted by lyleman View Post
    Hi Nev,
    Mine is 1/2 horse I think. My motor has a two step toothed belt pulley on the end of it. The motor itself has no internal gear reduction / stepup if thats what you mean. If I need more speed i will just drive it through a VFD and overdrive it by stepping up the frequency a bit. As it appears to have roller bearings on all the spindles so it should be fine to do this. I will get it cleaned up ind into service and see how it goes. The lack of speed would only be a problem when using endmills i would think. The gears in the vert head are 33 tooth drive and 32 tooth driven.
    Lyle.
    Just realized that I made a small error in he vertical head speed calc , I forgot to factor in the primary drive gear ratio from the spindle mounted drive gear to the vert head. This is 1.3:1. The secondary drive through the bevel gears in the head is then 1.03:1.
    Hope this clarifies things.
    Regards, Lyle.

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