OldSalt1945:
Wow! 7 in-oz of torque! I hope it doesn't rip the equipment apart with all that power!
Sounds like I will need a 32 threads per inch leadscrew if I actually want to move anything with it.
24 steps per revolution, 500 steps per second, 32 tpi = god-awful slow.But free!
Variable reluctance motors are pretty poor performers compared to modern
neodymium-magnet hybrid steppers. They are cheaper as only copper and iron
are needed, no permanent magnet materials. Rare-earth magnets didn't exist in
1981...
A good NEMA23 modern stepper has 200 steps/revolution and 3 N-m of holding torque.