Summary

This is an improved version of the NEMA17 3D model provided by kdtop3. The primary improvements are to to correct the hole spacing to 31mm as typical for NEMA17 motors, and to change the top level translation so that the mounting surface is placed at z=0. The motor shaft remains centered at xy=0. Various other tweaks to the openSCAD source are described at the top of the provided openSCAD file.

Two STL files are included. File Nema17_48mm.stl is a general representation of a 48mm long motor such as a Kysan 1124090. File Nema17_26r5mm.stl is a general representation of a 26.5mm long motor such as an e3d MT-1701HSM140AE. Other motors can be defined by tailoring various parameters in the openSCAD source.

The result generated here is not intended for printing. The model design would be used within another, higher level design typically by importing the STL result from here. OpenSCAD higher level designs have the option of "using" the Nema17 module directly.

The model will typically have to be rotated and translated as required for the higher level design. Rotate the model for the desired mounting face orientation first, and then translate the rotated model to the desired location in the higher level assembly.

Review the comments provided at the beginning of the openSCAD source for more information.