• Vfd

    From ed stec@21:1/5 to All on Wed Aug 9 02:21:14 2023
    Hi I have a union graduate 600 that I want to put a variable frequency drive on but haven’t had any luck getting anyone who knows what motor and controls to get I am in Canada any suggestions help

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  • From Graham@21:1/5 to ed stec on Wed Aug 9 08:31:44 2023
    On 2023-08-09 3:21 a.m., ed stec wrote:
    Hi I have a union graduate 600 that I want to put a variable frequency drive on but haven’t had any luck getting anyone who knows what motor and controls to get I am in Canada any suggestions help

    I looked into this a few years ago when I had a General 160. There were
    several companies in Calgary that sold the motors and controllers.
    At the time, cost put me off converting the lathe but there were
    no problems otherwise.
    I solved the problem by selling the General and buying a Nova.

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  • From Graham@21:1/5 to Ralph E Lindberg on Sun Aug 13 14:35:38 2023
    On 2023-08-13 8:39 a.m., Ralph E Lindberg wrote:
    On 2023-08-09 09:21:14 +0000, ed stec said:

    Hi I have a union graduate 600 that I want to put a variable frequency
    drive on but haven’t had any luck getting anyone who knows what motor
    and controls to get I am in Canada any suggestions help

    A moderately cheap way is "buy" a used treadmill and put that motor and controller on the lathe

    But that might not have enough power.
    I think that there is a limited amount of space for the motor in
    a Union Graduate. That's why it's important to talk to the guys in
    the motor supplier's.
    I cobbled together a 3/4HP motor with a jack shaft to run a General
    160 and always had problems with vibration. I looked into getting a VFD
    set-up and ISTR it would have cost me about $700 for the motor and
    controller.

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