NEMA stepper motors

NEMA stepper motors: 5 sizes. Dimensions: frame, length, bolt spacing. Use parts in kernelCAD Studio or MCP.

Front and top view of NEMA 14 stepper motor, projected from the catalog STEP file. The catalog solid is simplified (no modeled thread or drive recess), so read dimensions from the table, not from the drawing.

Dimensions

Part	Frame (mm)	Length (mm)	Bolt spacing (mm)	Bolt size (mm)	Shaft diameter (mm)	Shaft length (mm)
NEMA 8 stepper motor	20.4	28	16	2.5	4	14
NEMA 11 stepper motor	28.2	32	23	2.5	5	18
NEMA 14 stepper motor	35.2	36	26	3	5	22
NEMA 17 stepper motor	42.3	40	31	3	5	24
NEMA 23 stepper motor	56.4	56	47.14	5	6.35	21

Standard: none: catalog family without a published standard
Category: motor
Licence: MIT

Use a size in a model

Every size is a catalog part with a STEP solid and mate connectors. Use a code-CAD script, or ask an agent through the MCP fetch_part tool, by its part ID:

const part = await lib.fetchPart('nema-8');

Open kernelCAD Studio ↗