Stop wasting time with approximate models. This production-ready CAD model of the NEMA 17 standard stepper (17HS4401) is verified against the official manufacturer datasheet.
The most widely used stepper motor in 3D printing and CNC — if you build machines, you need this model.
Technical Specifications:
- Frame size: NEMA 17 (42.3 x 42.3mm)
- Body length: 40mm
- Shaft diameter: 5mm (single, D-cut)
- Shaft length: 22mm
- Mounting: 4x M3 bolt pattern (31mm pitch)
- Reference: 17HS4401 datasheet verified
Files Included:
- Universal: .STEP (Fusion 360, FreeCAD, SolidWorks, Inventor, Onshape)
- Visualization: .STL
Used in: Ender 3, Prusa MK3, Voron, RatRig, custom CNC machines.
Need all 4 NEMA 17 variants? Get the full bundle and save.
Precision is not an option. It's our standard.Designed by B-Motion CAD - Nuclear industry precision, applied to every model.
STL (Stereolithography, filesize: 2.02 MB), OBJ (OBJ, filesize: 1.68 MB), STP (STEP, filesize: 1.76 MB), FBX (Autodesk FBX, filesize: 578 KB)