There is a VFD drive that will do 5Hp with single phase 220V input, made by Polyspede
I just submitted a "bug" report.I referred TPTB to this thread,and asked them to please...
I should have also said that the mount for the chuck is for a 1/2"-20 thread. The arbor I made was...
The wire stuff is pretty cool, eh?
Check your hydraulic actuators for run out. May just be vibration.