NEMA Motor

Working Notes

A NEMA 24 is 2.4 x 2.4, whoever made the webpage made a mistake.

NEMA is a US based association that attempts to set standards for manufacturing. For stepper motors, they have chosen a label that lists the size first. So a NEMA 17 is a 1.7" cube and any NEMA 17 motor will mount in the same mount holes of another NEMA 17. This gives the manufacturers more flexibility with their designs because they don't have to redesign the motor mount method just because they changed motor supplier.

If you want a really boring read, go to the NEMA website, then go into standards, search for motor. In the search results there should be a tabel of contents or an index for motors and generators. Read through it until you find the listing for motor labeling, look to the right of that listing and it will tell you what standard(s) you need to look for, then go to the standard(s) and start reading. If you make it past 5 pages before falling asleep then you may want to seek out a mental health professional.

 explanation by criswilson10 in

http://dev.forums.reprap.org/read.php?14,32120,32369

Picture, Picture

This is how big it is, This is how far apart the bolt holes are.