The Best Prusa I3 Stepper Motor of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Prusa I3 Stepper Motor of 2025. Check our ranking below.
2,282 Reviews Scanned
- Great replacement for the Y axis of prusa MK3 MK3S MK3S+ 3d printer accessories or CNC machine.
- Adopting high quality motor steel material, is provided with high torque (static moment: 490mN.m) ), low self-inductance reactance, responsive and can avoid system error.Low loss stators have better high speed performance.
- Come with an integrated 4 pin connetcing wire, cable length about 500mm/19.6inch.
- Size: 42mm X 40mm X 20mm/1.65''x1.57''x0.78'' ,NEMA 17 bipolar 4-wire:Black: A+, Green: A-, Red: B+, Blue: B-
- Package listing: 1x Prusa i3 MK3S+ nema 17 Step Motor with integrated cable.
- Great replacement for the X axis of prusa MK3 MK3S MK3S+ 3d printers.
- Adopting high quality motor steel material, is provided with high torque (400mN.m/57.1 oz.in) ), low self-inductance reactance, responsive and can avoid system error.Low loss stators have better high speed performance.
- Come with an integrated 4 pin connetcing wire, cable length about 350mm/13.8inch
- Size: 42mm X 40mm X 20mm/1.65''x1.57''x0.78'' ,NEMA 17 bipolar 4-wire:Black: A+, Green: A-, Red: B+, Blue: B-
- Package listing: 1x Prusa i3 MK3S+ X axis Stepping Motor with integrated cable 350mm.
- 1. A must-have FDM 3D Printer Part: this small stepper motor is clone, not original, drop-in replacement stock E-axis, compatible with MK4 Prusa - XL - MK3.9 Print head. Come with an integrated cable, length about 60mm / 2.36inch. A perfect clone prusa printer part. Not suitable Prusa I3 MK3S - MK3 - MK2.5S - MK2.5 - MK2S - MK3S+ - MK2 - MINI - MINI+.
- 2. High-quality Genuine Material: Compared with other nema 17 stepping, this stepper motor has a blackened Shaft surface (with nitriding treatment), which makes it more durable and stable performance while going on a 3d printing project.
- 3. Compact Design: NEMA 17 bipolar 42x42x20mm/1.65"x1.65"x0.82" , buit-in connecting cable with 4pin MX connector. With high torque, stable output, but low noise.
- 4. High Step Accuracy: Rated current 1.0A & resistance 7±15%ohms.
- 5. Package Content: 1pcs 42-20 small extrusion stepper motor with connecting cable. If need nextruder heater block, cartridge thermistor kit, mk4 V6 nozzle adapter, mk52 spring steel sheet 4010 5015 fan cooling or silicone sock, please enter our store.
- 2mm pitch, 4 starts, 8mm lead
- High torque nema 17 stepper motor, 400mN.m/57.1 oz.in, 42mm, 2 phase 4 wires
- Come with a brass nut and 1M (39.37") motor wire
- NEMA 17 Stepper Motor with Integrated 150mm Tr8x8 Lead Screw, much stable than shaft coupling connecting
- Great replacement for the Z axis of prusa i3 3d printers
- Nema 17 Stepper Motor with Integrated 300mm T8 Lead Screw, much stable than shaft coupling connecting
- Each phase draws current 1.68A, allowing for a holding torque of 40Ncm.
- Easy to plug: 30cm lead wire with XH2.54 connector,no soldering or peeling works.
- Frame size: 42mm*42mm*40mm. With 1.8° step angle (200 steps/revolution)
- Precisely machined full metal body, great replacement for the Z axis of prusa i3 3d printers.
- 【Drop-in】Direct Replacement small stepper Motor, no need any firmware to change: 1pcs Nema 17 Stepper Motor 42x40mm only, not come with a connecting Cable, compatible with 3d printer Mega XYE axis or Vyperr Y axis or other CNC machines. Please note: Not work for 3d-Kobra Extruder or test on Kobrra other axis
- 【Specification】Motor size: 42 * 42 * 40mm (1.7 * 1.7 * 1.6in), 1.8° Step Angle( Accuracy +-9%), Rated Voltage 2.55V, Current 1.5A/Phase
- 【High Torque】 this 42-40 stepper motor Adopting high quality motor steel material, is provided with high torque (42Ncm(60oz.in) ), low self-inductance reactance, responsive and can avoid system error. Low loss stators have better high speed performance
- 【Shaft length】About 20mm, diameter: 5mm （D-shape）
- 【Tips】We only test for Vyper and MegaSeries machine, have not applied on other printer models yet. So if you use on other printers, please make sure change the firmware. If need more help, please feel free to contact us via your order ID
- 2mm pitch, 4 starts, 8mm lead
- High torque nema 17 stepper motor, 400mN.m/57.1 oz.in, 42mm, 2 phase 4 wires
- Come with a brass nut and 1M (39.37") motor wire
- NEMA 17 Stepper Motor with Integrated 310mm Tr8x8 Lead Screw, much stable than shaft coupling connecting
- Great replacement for the Z axis of prusa i3 3d printers or CNC Machine
- [Specifications]: Body Length: 42x40mm; Step Angle: 1.8 degree; Phase: 2; Rated Current: 1.5A; Shaft Diameter: Φ10mm, Shaft Length: 300mm, 2 phase, 4 wires; Phase Resistance: 1.8Ω; Phase Inductance: 3.8mH; Holding Togque: 400mN.m Min; Rotor Inertia: 57g.cm²; Insulation Class: B(130℃); Motor Weight: 280g Ref
- [Includes]: Come with 1PCS 42x42*40*100mm Nema 17 300mm T8x8 lead screw stepper motor, a brass nut with 1m wiring harness for connector.
- [Strong Adaptability]: widely utilized across various industrial applications,much stable than shaft coupling connecting
- [Quality materials]: NEMA 17 lead screw stepper motor are made of copper and alloy steel as well as advanced insulation materials to ensure good durability and reliability.
- We are dedicated in providing the best products and services to customers. If you have any problems, please don’t hesitate to contact us,we will help you solve the problem as soon as possible.
- 5 pieces of stepper motor driver for 3D printers.
- Ensures smooth and stable motor operation.
- Designed for use with various controller boards.
- Works as a practical replacement part.
- Easy to install on different printing systems.
Last update on 2026-04-15 / Affiliate links / Images from Amazon Product Advertising API
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FAQ:
Q: What is the difference between E3D stepper motor and Prusa motor?
A: The E3D stepper is 38mm in length whereas the Prusa motors are 36mm? (or maybe 34mm) (X, Y) and 40mm (E) and from a different manufacturer. They will in all likelihood perform in a similar manner. Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith.
Q: How many degrees of rotation does the Prusa propeller have?
A: 1.8 degrees (200 steps for 1 revolution). The Prusa supplied steppers are 36mm (X, Y) and 40mm (E), so you may have to make some adjustments to get larger motors to fit. There is another option and that is to purchase an “upgrade kit” from Prusa, and that way, you would get a spare hot end, probe, motors, printed parts, bed, hardware etc.
Q: How do I upgrade my Prusa Z motors?
A: There is another option and that is to purchase an “upgrade kit” from Prusa, and that way, you would get a spare hot end, probe, motors, printed parts, bed, hardware etc. A pair of replacement Z motors (from Banggood) is £50 (plus import duty etc), a hot end is another £45 or so. Just a thought…
Q: Can I use a stepper motor as an extruder motor?
A: Yes, the 0.9° stepper has relativ high resistance, but Ohm law tell us : 6 Ohm x 0.5A (max. current form the Rambo) = 3V -> should work well :geek: … you’ve got it ! I’ve an 0.9° stepper here as well, dedicated for a test as extruder motor… but haven’t tested it until now.