I'm replacing the old Superior Electric MO93-FD-301 stepper motors (see photo) on my Fehlmann Picomax 50 cnc. One is missing altogether and given the massive current requirement for the existing motor I'd like to buy a pair of new ones. Does anyone have any suggestion as to what sort of replacement would be suitable? The original motors are Nema34 but it's no problem to make up Nema23 adapters.

I was thinking of using closed loop steppers, but I can't get to the bottom of what would be suitable as a replacement and UK availability is limited.

Any help much appreciated.
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