What is the difference between a NEMA 23 and NEMA 24 motor? can I use either one on a machine?

The frame size difference of the NEMA 23 and 24 is very slight and, depending on the motor mount both will most likely fit. The bigger difference between these stepping motors is the torque. Make sure that the motor that you purchase has the appropriate torque for the axis that it will move. Is is safe to go with the higher torque? Or if the torque is too high for what i need is that bad? You can use a motor with higher torque. Just make sure to select the correct driver for that motor. Additional Information: The frame size has nothing to do with torque. Nema 23 means a 2.3" frame. Nema 24 means a 2.4" frame. That's all. Either could have more or less torque depending on speed and power. Additional Information: Additional Information: Additional Information: Additional Information: Additional Information: Additional Information: