тэжээл extruder pellet тээрэм. FabMX Pellet Extruder. The extruder uses a NEMA23 stepper motor with gear box. It needs to have the following specs: The gear box needs to have 4 M5 threaded holes for mounting, lying on a circle d=45mm. The gearbox shaft should have a diameter of d=12mm. Use a different coupler if the shaft has a ...