Thanks Jake. That helps and is closer to what I need to jump aboard. I assume the lettering on the motor are in English when ordering from Levercraft US, which would be quite helpful in looking for similar torque and speed characteristics for a replacement.Jake_G wrote: First, the motor and its longevity and life cycle:
As others have said, the Ultra uses an Permanent Magnet AC (PMAC) Synchronous servo motor. The motor is a relatively standard 130mm frame servo used in tens of thousands of light industrial applications. It is often marketed as a CNC servo, due to the high accuracy of speed and position control made possible by the motor and encoder combo. If this motor failed, you could replace it with any other 130mm servo with similar torque and speed characteristics with no issue aside from a few parameter adjustments on the drive. It is not proprietary. To illustrate this, the original 2500 rpm 220V motor did not work satisfactorily on 110V. We were able to find a suitable motor locally and plug it into the big box and get the grinder going without any issue. That said, the 110V servo is less common than the 220V servo and it is preferable to match the motor to your supply voltage to get the best performance.
And thanks to all others who responded. All responses were helpful, especially Jeff's... dead on point.
[Edit: I pre-ordered mine. Now the wait.]