Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.


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Thread: Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.

  1. #1

    Default Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.

    I am building a fixture to "run in" spindles after rebuild. I have a fanuc 8000 rpm motor. (See attached pic of nameplate) the only load on the motor will be a belt driving a free spinning spindle up to 10,000 rpm for an hour at a time. What size VFD do I need, 220 volt single phase input?



  2. #2
    Community Moderator Jim Dawson's Avatar
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    Default Re: Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.

    For that application, a 15HP single phase rated VFD should work OK. Something like this https://www.ebay.com/itm/15-HP-VFD-D...8AAOSwhL5dcnmU

    Jim Dawson
    Sandy, Oregon, USA


  3. #3

    Default Re: Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.

    Not sure why pic did not upload but here is is. One VFD supplier told me I need a 30HP VFD without seeing specifications, I just told him amps over the phone.

    Attached Thumbnails Attached Thumbnails Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.-20201006_141257-jpg  


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Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.

Running a 5.5/7.5 kw 8000 rpm Fanuc motor on a vfd.