Here are four must-have items for selecting a NEMA motor. Number one, horse power. Torque makes the world go around. How much do you need? Number two, speed. This is an RPMs. How fast does it need to spin? Number three, voltage. Be careful, as some motors are dual rated. Make sure you select the proper voltage that you need. Number four, frame. Size matters and proper frame selection will save you tons of headaches. For additional resources for selecting NEMA motors, check out the link below. And remember to keep asking why.