Vfd

Aug 09, 2023 Last reply: 2 years ago 3 Replies

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.

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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