Nema 17 Stepper Motor 1PC/3PCS/5PCS, 2 Phase Step Motor Bipolar 1.5A 59.5oz.in(42Ncm) 42x42x38mm 4-Wire 30cm Long Cable for 3D Printer (1, 42A02C-Dupont)
Purchase options and add-ons
Brand | RTELLIGENT |
Product Dimensions | 1.65"W x 1.65"H |
Material | Alloy Steel |
Manufacturer | RTELLIGENT |
UPC | 791315155614 |
About this item
- Nema 17 stepper motor with 0.42Nm holding torque
- Bipolar stepper motor 42*42*38mm, 2 phase
- With built-in 30cm cable, 4-wire
- Rated current 1.5A & resistance 2.4ohms, 1.8 degree
- Low noise high speed 3d printer stepper motor
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Product details
- Product Dimensions : 1.65 x 1.65 x 1.65 inches; 10.23 ounces
- Date First Available : October 29, 2019
- Manufacturer : RTELLIGENT
- ASIN : B0817T3X5F
- Best Sellers Rank: #155,280 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #61 in 3D Printer Motors
- Customer Reviews:
Product Description

Shenzhen Rtelligent Mechanical and Electrical Technology Co., Ltd is a manufacturer which has full motion controlling products including motion controller, stepper servo drive, stepper servo motor, stepper drive and stepper motor with well-equipped testing facilities and strong technical power.
With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in textile, package, printing, carving, advertising, laser, electron and other Automatic industries.Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs by the innovation of our R&D team.
We welcome new and old customers from all walks of life to consult us for future business relationships and mutual success!

Nema 17 Stepper Motor 1.5A 59.5oz.in(42Ncm)
- General specification
- Step accuracy: ±5%(synchronizing, no-load)
- Temperature rise: 80℃Max
- Ambient temperature: -10℃—+50℃
- Insulation resistance: 100MΩmin.500VDC
- Voltage resistance: 500VAC for one minute
- Radial runout: 0.06Max.(450g-load)
- Axial runout: 0.08Max.(450g-load)
Electrical Specifications of Step Motor
Product Model | 42A02C |
Step Angle | 1.8°±5% (full step no-load) |
Rated Current | 1.5A |
Phase | 2 |
Number of Lead | 4 |
Holding Torque | 59.5oz.in(42Ncm) |
Phase Resistance | 2.4Ohm ± 15% |
Phase Inductance | 3.7mH ± 20% |
Rotor Inertia | 57.3g.cm² |
Motor Size | 42x42x38mm |
Shaft Diameter | 4.5mm |
Dimensions of stepper motor

Warning
Warning: Make sure the motor is connected to a constant current or chopper drive controller before testing. Connecting the motor directly to a power supply will destroy it.
Package Contents:
1 x 42A02C Stepper Motor
1 x 42A02C Dupont Cable
1 x 42A02C User Manual
Noted:
If you encounter technical problems during use, please be sure to ask us! We will solve the problem for you.
When you are unable to consult us, please be sure to consult Amazon Buyer Services for help. Thank you!
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Customer Reviews |
4.7 out of 5 stars 107
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4.3 out of 5 stars 6
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3.9 out of 5 stars 3
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4.7 out of 5 stars 31
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Price | $24.99$24.99 | $12.00$12.00 | $11.99$11.99 | $20.99$20.99 |
Holding Torque | 42Ncm/59.5oz.in | 36Ncm/56.0oz-in | 56Ncm/79.33oz-in | 68Ncm /96.33oz-in |
Rated Current | 1.5A | 1.5A | 2.0A | 2.0A |
Shaft Diameter | 4.5mm | 5mm | 5mm | 5mm |
Motor body length | 42x42x38mm | 42x42x40mm | 42x42x48mm | 42x42x60mm |
Shaft Length ( L1) | 24mm | 24mm | 24mm | 24mm |

RTELLIGENT
WE CAN PROVIDE PERFECT SOLUTION FOR YOUR MOTION REQUEST!
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find these stepper motors to be of good build quality and high torque. They operate efficiently, with one customer noting they function well with an A4988 stepper driver, and another mentioning they run at less than 4V. Customers consider them excellent value for money.
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Customers find the stepper motor to be an excellent value, with multiple customers noting that three units are working great.
"...this is an excellent value." Read more
"Great replacement on my Tronxy X5SA filament printer. works great at a very reasonable price." Read more
"...All three are working great. The packaging and document that came with them was high quality." Read more
"Good price on nice steppers..." Read more
Customers find these stepper motors well-made, with one customer noting they hold up stronger than expected.
"This motor is well-made but somewhat unusual...." Read more
"...The packaging and document that came with them was high quality." Read more
"Nice quality stepper motors. Hold a lot stronger than the original ones on my 3D printer...." Read more
Customers appreciate the motor's power consumption, with one customer noting it operates at less than 4V and functions well with an A4988 stepper driver.
"...It has a very low resistance winding and operates at less than 4V. Given its high torque, the phase current is a bit high at 1.2 A at slower speeds...." Read more
"...Torque - Quick shipping and great products works as expected with Low power but high torque and efficiency." Read more
"This Nema 17 stepper provides plenty of torque and functions well an A4988 stepper driver attached to an Arduino Nano microcontroller." Read more
Customers appreciate the motor's high torque, with one customer noting its very low resistance winding.
"This motor is well-made but somewhat unusual. It has a very low resistance winding and operates at less than 4V. Given its high torque, the phase..." Read more
"RTELLIGENT Stepper motor for Arduino Automatic Fish Feeder - Great Torque - Quick shipping and great products works as expected with Low power but..." Read more
"This Nema 17 stepper provides plenty of torque and functions well an A4988 stepper driver attached to an Arduino Nano microcontroller." Read more
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Great Product and super fast shipping!
Top reviews from the United States
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- Reviewed in the United States on March 28, 2023Item Package Quantity: 3Size: 42A02C-XH2.54Verified PurchaseThis motor is well-made but somewhat unusual. It has a very low resistance winding and operates at less than 4V. Given its high torque, the phase current is a bit high at 1.2 A at slower speeds. Most of the steppers I have used have operated on at least 6V at currents of 600mA or less. If you need a high-torque, 200-step motor and you have a source that can supply 1.5 A at 4 or less motor Volts (about 6 Volts input to an H-bridge by the time you deduct the losses from the high- and low-side transistors), this is an excellent value.
- Reviewed in the United States on March 13, 2025Item Package Quantity: 1Size: 42A02C-DupontVerified PurchaseGreat replacement on my Tronxy X5SA filament printer. works great at a very reasonable price.
- Reviewed in the United States on April 14, 2022Item Package Quantity: 5Size: 42A02C-XH2.54Verified PurchaseI bought these motors to replace the extruder motor in my new Creality Ender 3 Pro 3D Printers. The motors they are shipping with the printers now have a round output shaft that does not stick up above the feed gear on the motor shaft with the feed gear pressed onto the shaft. This makes it very difficult to change the feed gear if you need to, and with no shaft sticking above the gear, you cannot add an extruder knob to manually feed filament into your print head.
These new motors have an output shaft with a flat on one side that is 10mm longer than the one on the stock motor that comes on the machines now. I am now able to use my own feed gears AND put an extruder knob onto the shaft.
The 5-pack of motors came well packed in a nice box with a foam insert with die-cut openings for the motors. The new motors have the same step size and turn the same direction as the stock motor, so I did not have to make any changes to the printer firmware. Best of all, I got the motors in just 2 days with regular free shipping which was a great surprise! Overall, I am very happy with these new motors for my printers.
5.0 out of 5 starsI bought these motors to replace the extruder motor in my new Creality Ender 3 Pro 3D Printers. The motors they are shipping with the printers now have a round output shaft that does not stick up above the feed gear on the motor shaft with the feed gear pressed onto the shaft. This makes it very difficult to change the feed gear if you need to, and with no shaft sticking above the gear, you cannot add an extruder knob to manually feed filament into your print head.Great Product and super fast shipping!
Reviewed in the United States on April 14, 2022
These new motors have an output shaft with a flat on one side that is 10mm longer than the one on the stock motor that comes on the machines now. I am now able to use my own feed gears AND put an extruder knob onto the shaft.
The 5-pack of motors came well packed in a nice box with a foam insert with die-cut openings for the motors. The new motors have the same step size and turn the same direction as the stock motor, so I did not have to make any changes to the printer firmware. Best of all, I got the motors in just 2 days with regular free shipping which was a great surprise! Overall, I am very happy with these new motors for my printers.
Images in this review
- Reviewed in the United States on March 13, 2021Item Package Quantity: 3Size: 42A02C-DupontVerified PurchaseRTELLIGENT Stepper motor for Arduino Automatic Fish Feeder - Great Torque - Quick shipping and great products works as expected with Low power but high torque and efficiency.
- Reviewed in the United States on November 2, 2022Item Package Quantity: 3Size: 42A02C-DupontVerified PurchaseI am not sure what else you can say about a standard stepper motor. All three are working great. The packaging and document that came with them was high quality.
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Reviewed in the United States on May 31, 2023Item Package Quantity: 5Size: 42A02C-DupontVerified PurchaseDisfrutando y proximo a desarrollo de un buen proyecto que el respaldo de esta compra.
- Reviewed in the United States on March 20, 2021Item Package Quantity: 3Size: 42A02C-DupontVerified PurchaseThis Nema 17 stepper provides plenty of torque and functions well an A4988 stepper driver attached to an Arduino Nano microcontroller.
- Reviewed in the United States on February 28, 2020Item Package Quantity: 5Size: 42A02C-XH2.54Verified PurchaseNice quality stepper motors. Hold a lot stronger than the original ones on my 3D printer. If you plug these in and they don't work try switching the center two wires green and blue.