28BYJ-48 to M4 Coupling

thingiverse

I designed this coupling for the 28BYJ-48 stepper motor to connect it securely to an M4 screw or threaded rod. It comes equipped with reinforced support, allowing it to print horizontally without any issues, resulting in a sturdy part that can withstand rotation axis direction stress. The dimensions are optimized for use with PLA 0.2mm layer thickness and should print well without additional support structures. After printing, some minor sanding may be necessary to achieve a smooth finish. When assembling the screw and rotor, they should fit together easily; depending on your application, you might need to apply a small drop of glue to keep them in place securely. The M4 screw is designed to be fixed using double nuts for added stability.