So I'm looking at this web page with NEMA 34 stepper torque graphs...

At 2000Hz it does 3.5 Ncm on a half step = 5 ounce inches? Sounds like it would make a good lettuce leaf turner in a restaurant :confused:

So that's 31.4 radians/second times .035Nm = 1.1 Watts

With 330 Watts input that's 0.33% efficient, or is my maths up the clack? :confused:

Did they mean 3.5 Nm? That would make it 33% efficient which seems a bit too good to be true.

Starting to think I'm the only stepper motor shopper in the entire world who won't buy a pig in a poke.