Advice on VF device for a chinese 400hz CNC router motor please.

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ivan

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I bought a 4 column router lift from Ali Express to play with. Further investigation sugests that a Chinese CNC router motor might make a suitable power source. Air cooled motors go up to about 3 HP and water cooled more still. A 4kW 220v motor is around £150 +VAT.
The 400 Hz 3 phase reminds me of avionics - the higher frequency making motors less weighty (less iron). Would a standard VF controller be able to span say 180 - 400 Hz to give a typical router speed range? How would the power output at low speed, compare with a normal brush moter router, running slow?

Any thoughts would be most welcome!
 

ivan

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how does this compare for cutting ability against a standard 1/2", 2 odd kW router?
 

flh801978

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Well its a lot quieter and has a collet chuck with er20 collets that take up to 1/2 13mm bits down to 1mm if needed
Nothing to wear out(brushes)
Smaller
Cutting ability is the same i would say
 

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