Quote:
Originally Posted by mman1506
I'm 90% sure you need a VFD to use these spindles in any setup. I've used a couple on different machines and they all have parameters that must be set in the VFD to avoid damaging the spindle from over speed. I don't have much knowledge of AC power systems but I'm fairly sure that if they were hooked up directly to 3 phase power It wouldn't work or spin far too slow for machining. Likewise I've never seen someone hook one up without a VFD.
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It will depend on your router and how it's electrics are set up, but yes most require a VFD. Check your machine and the spindle you are looking at and find out on the internet how to set your machine up with the correct settings for it to work. Make sure you have your conversion plan ready before you buy anything.