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rfc question, can't find a large motor

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  • rfc question, can't find a large motor

    I can't find a ten horse motor for cheap. I have two fives available.
    Can I couple them and get ten hp.? Would the wiring be different?

  • #2
    I bought my 10HP RFC all new for $225. The guy works for a commercial heating/cooling company & when they up size a system they were throwing the motors away. I can see if he has one, it will have the shaft already cut & be 1725 rpm. Not sure what shipping would be. He makes them as good or better than most factories do & they look as good. I have a 7.5 HP I'll give you if it will work & you cover shipping. Ebay sells the rest of the system for a 10HP CNC rated for $189/shipped. eBay item number:300526178147

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    • #3
      I see no problem coupling them together in parallel for this purpose. Lots of motors get paralleled this way, mostly when using a VFD so they all run the same speed, as on a conveyor line.

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      • #4
        Two RPC idlers work fine.

        In small shops having several three phase machines run from a not-too-adequate RPC, it's common practice to start the motor of an unused machines to run idle as it supplys extra third leg power to run the largest motor.
        Last edited by Forrest Addy; 10-23-2016, 01:32 PM.

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