"The motor is German, made by AEG and can be wired for either 220V or 380V, 50Hz, 3 phase. It is 2HP (1.5KW) and 1400RPM. This is an older unit, enclosed and fan cooled, ball bearings, heavy and solid. Dual shafts measure 22mm (~0.863") and each end has a woodruff type key in it. Not sure what this was originally from, but it runs smooth and strong with almost no perceptable vibration"
As chuck said, see it run with a load on it.
This is the part I see to be careful of.
...The motor is German,
...Dual shafts measure 22mm (~0.863")
woodruff type key ...
If you are buying American made standard pulleys like the ones Rob Frink sells.
you are SOL.
If you can find V belt pulleys with the metric 22mm shaft hole, OK
If you can bore the 3/4" hole of a standard pulley larger and make the key-way work, OK
The Woodruff key is a Half moon key, not the square key we are used to.
for $100, I would try to make that all work, compared to the price of a new motor and VFD..