NEMA 17 motors are in many robotics applications from CNC machines to medical instruments, however in the maker world, we commonly see them being used in 3D printers. We stock a range of NEMA 17 motors to ensure you have a suitable selection to choose from for your specific application, whether the focus is on weight, size or technical characteristics. This particular motor is a NEMA 17 42mm motor with a 40mm tall body (42/40), D-shape shaft and cable connector. Full specifications and dimensions can be found below, along with a datasheet. A short cable is included but please check the order of the wires as they may not match your intended application (for example, some 3D printer mainboards may require a different wire order). Other versions We also offer: * NEMA 17 42mm motor with a 34mm tall body with fixed cable (42/34) * NEMA 17 42mm motor with a 34mm tall body and cable connector (42/34) * NEMA 17 42mm motor with a 60mm tall body and cable connector (42/60) Specifications Rated Voltage 2.8V Current/Phase 1.68A Resistance/Phase 1.5Ω Induction/Phase 2.8mH Holding Torque 4.0KG-cm Number of leads 4 Moment of Inertia 68g-cm2 Weight 0.28kg Orientation Torque 200g-cm Length 40mm Step Angle 1.8° Step Angle Accuracy ±5% (full step, no load) Resistance Accuracy ±10% Inductance Accuracy ±20% Temperature Rise 80°C Max. (rated current, 2 phase on) Ambient Temperature -20°C-+50°C Insulation Resistance 100MΩ Min. , 500VDC Dielectric Strength 500VAC/ for 1 minute Shaft Radial Play 0.02 Max. (450g load) Shaft Axial Play 0.08 Max. (450g load) Max. Radial force 28N Max. Axial force 10N Dimensions Resources * Datasheet Package Contents * 1x 42/40 NEMA 17 motor * 1x Motor cable https://elecena.pl/product/22727914/nema-17-stepper-motor-42mm-x-40mm 2023-03-07 https://elecena.pl/product/22727914/nema-17-stepper-motor-42mm-x-40mm 2023-12-27 https://elecena.pl/product/22727914/nema-17-stepper-motor-42mm-x-40mm 2024-09-18 https://elecena.pl/product/22727914/nema-17-stepper-motor-42mm-x-40mm 2024-11-29 https://elecena.pl/product/22727914/nema-17-stepper-motor-42mm-x-40mm 2024-11-30 https://elecena.pl/product/22727914/nema-17-stepper-motor-42mm-x-40mm 2025-11-28 https://elecena.pl/product/22727914/nema-17-stepper-motor-42mm-x-40mm 2025-11-29