It would be folly to use a spindle drive that does not have encoder feedback. You will get an appreciable increase in available torque.
Flux or Sensorless vector is typically fine for gear reduction spindle drives, like on an old engine lathe or bridgeport. Places that have lots of reduction from the motor....
I have an SJ100. It stinks for CNC use. 5HP is grossly underpowered for a 5HP CNC lathe. Cannot accel fast enough for any usable CSS. Wont decel fast enough when retracting (like pecking a groove) and will go overvoltage and fault out. |