@Catman - The control panel will need the contactor heaters changed to the correct ones for the new (220V) amperage. That is the only change there.
The wires in the motor need to be reconnected for 220V, thats the only change there.
You do know that a RPC is more than just a idler motor, right? It also needs the correct "balancing capacitors" to correct the out-put of the three phase. This link has all you need to figure out how to select and tune the balance capacitors, but you have to spend some time reading - http://www.practicalmachinist.com/vb/transformers-phase-converters-vfd/
If you spend a little time reading on the PracticalMachinist.com site you will probably find a thread with someone doing a conversion real close to what your doing. Maybe not the same brand of lathe but one with the same horse power motor. http://www.practicalmachinist.com/vb/
The wires in the motor need to be reconnected for 220V, thats the only change there.
You do know that a RPC is more than just a idler motor, right? It also needs the correct "balancing capacitors" to correct the out-put of the three phase. This link has all you need to figure out how to select and tune the balance capacitors, but you have to spend some time reading - http://www.practicalmachinist.com/vb/transformers-phase-converters-vfd/
If you spend a little time reading on the PracticalMachinist.com site you will probably find a thread with someone doing a conversion real close to what your doing. Maybe not the same brand of lathe but one with the same horse power motor. http://www.practicalmachinist.com/vb/