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NEMA 17 stepper motor

What are the NEMA 17 mounting dimensions? · Standard part · basis: NEMA ICS 16 frame standard; common vendor values

width
42.3 mm
height
42.3 mm
holes
4 × Ø3.0 mm · 31 x 31 · M3

Notes

  • Face 42.3 × 42.3 mm; four M3 holes on a 31.0 × 31.0 mm pattern; Ø22 mm pilot boss, 2 mm tall; Ø5 mm shaft with a D-flat, typically 20–24 mm long.
  • Body length varies by torque (20–60 mm); the face and hole pattern don't.

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

WikipediaStepper motor (NEMA frame sizes)webCC BY-SA 4.0 (text)

Xem scan

Not needed Published standard; the sheet is the geometry.

Plain text: sheet.txt · JSON: /api/geometry?object=nema-17-stepper

hole pattern
Schematic, not to scale.

Fits with

Questions

What is the NEMA 17 mounting hole pattern?

Four M3 holes on a 31.0 × 31.0 mm square, 42.3 mm face, Ø22 mm pilot boss 2 mm tall.

What is the NEMA 17 shaft diameter?

5 mm with a D-flat, usually 20–24 mm long. Body length 20–60 mm depending on torque; the face never changes.