Xem Studiomeasured geometryNEMA 8, 11, 14, 23 and 34 stepper motors
What is the NEMA 23 mounting hole pattern? · Hardware · basis: NEMA ICS 16 frame sizes; shaft and boss dimensions as commonly supplied (check the specific motor's drawing for body length)
- sizes
- 6 in table
Notes
- The NEMA number is the face width in tenths of an inch: NEMA 17 = 1.7 in = 42.3 mm. The face and hole pattern are fixed; body length varies with torque.
- NEMA 23: 56.4 mm face, 47.14 mm (1.856 in) hole pattern, Ø5.1 holes (#10-32 or M5), Ø38.1 boss, Ø6.35 shaft. NEMA 34: 86 mm face, 69.6 mm pattern, Ø14 shaft.
- NEMA 14: 35.2 face, 26 mm pattern, M3; NEMA 11: 28.2 face, 23 mm pattern, M2.5; NEMA 8: 20.2 face, 16 mm pattern, M2, Ø4 shaft.
Sizes
| nema | face_mm | hole_pattern_mm | hole_dia_mm | boss_dia_mm | shaft_dia_mm | shaft_len_mm | common_body_mm | |
|---|---|---|---|---|---|---|---|---|
| 8 | 20.2 | 16.0 | 2.2 | 15.0 | 1.5 | 4.0 | 10 | 30, 38 |
| 11 | 28.2 | 23.0 | 2.6 | 22.0 | 2.0 | 5.0 | 20 | 32, 45 |
| 14 | 35.2 | 26.0 | 3.0 | 22.0 | 2.0 | 5.0 | 20 | 28, 36 |
| 17 | 42.3 | 31.0 | 3.0 | 22.0 | 2.0 | 5.0 | 22 | 34, 40, 48 |
| 23 | 56.4 | 47.14 | 5.1 | 38.1 | 1.6 | 6.35 | 21 | 56, 76 |
| 34 | 86.0 | 69.6 | 6.5 | 73.0 | 1.6 | 14.0 | 37 | 80, 115 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Stepper motor | web | CC BY-SA 4.0 (text) |
| NEMA | ICS 16 motion/position control motors and controls | NEMA standard, purchase |
Free files
★ Free files 10 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| nema8-30 | NEMA 8 envelope, 30 mm body, 16.0 mm hole pattern, Ø4.0 shaft | STEP · STL |
| nema8-38 | NEMA 8 envelope, 38 mm body, 16.0 mm hole pattern, Ø4.0 shaft | STEP · STL |
| nema11-32 | NEMA 11 envelope, 32 mm body, 23.0 mm hole pattern, Ø5.0 shaft | STEP · STL |
| nema11-45 | NEMA 11 envelope, 45 mm body, 23.0 mm hole pattern, Ø5.0 shaft | STEP · STL |
| nema14-28 | NEMA 14 envelope, 28 mm body, 26.0 mm hole pattern, Ø5.0 shaft | STEP · STL |
| nema14-36 | NEMA 14 envelope, 36 mm body, 26.0 mm hole pattern, Ø5.0 shaft | STEP · STL |
| nema23-56 | NEMA 23 envelope, 56 mm body, 47.14 mm hole pattern, Ø6.35 shaft | STEP · STL |
| nema23-76 | NEMA 23 envelope, 76 mm body, 47.14 mm hole pattern, Ø6.35 shaft | STEP · STL |
| nema34-80 | NEMA 34 envelope, 80 mm body, 69.6 mm hole pattern, Ø14.0 shaft | STEP · STL |
| nema34-115 | NEMA 34 envelope, 115 mm body, 69.6 mm hole pattern, Ø14.0 shaft | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=nema-steppers-8-to-34
Fits with
Questions
What is the NEMA 23 bolt pattern?
Four holes on a 47.14 mm (1.856 in) square, Ø5.1 mm, on a 56.4 mm face; Ø38.1 mm pilot boss; Ø6.35 mm (1/4 in) shaft.
What is the NEMA 14 hole pattern?
26 mm square, M3, on a 35.2 mm face; Ø22 boss; Ø5 shaft.
NEMA 17 vs NEMA 23 size?
42.3 mm vs 56.4 mm face; 31 vs 47.14 mm hole pattern; 5 vs 6.35 mm shaft. Mounts are not interchangeable.
What is the NEMA 34 shaft size?
14 mm (some 12.7 mm / 1/2 in); 86 mm face, 69.6 mm hole pattern, Ø73 mm boss.