42HS40-1504 NEMA17 4.2 Kg-cm Stepper Motor – D Type Shaft


In stock

SKU: 1645126
  1. Model: 42HS40-1504 NEMA17 / 17HS4401
  2. Stable structure, no jamming
  3. Stable speed and low noise
  4. Step Angle(degrees): 1.8°±0.09°
  5. Phase Inductance: 3.7*(1±20%)mH/Phase
  6. Positioning Torque: 15 mN.m REF.
  7. Maximum starting rate:≥1500 PPS
  8. Insulation resistance:≥100 MΩ (DC 500V)
  9. Cable length: 1meter


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Brand: Generic
Category: Stepper Motors

The stepper motors move in precisely repeatable steps, hence they are the motors of choice for the machines requiring precise position control. The NEMA17 4.2 kg-cm Stepper Motor can provide 4.2 kg-cm of torque at 1.5A current per phase.

The motor’s position can be commanded to move or hold at one position with the help of Stepper Motor Drivers. The NEMA17 4.2 kg-cm Stepper Motor provides excellent response to starting, stopping and reversing pulses from stepper motor driver.

They are very useful in the various application, especially which demands low speed with high precision. Many machines such as 3D Printers, CNC Router and Mills, Camera Platforms, XYZ Plotters etc. This motor is usually compatible with Two Trees 3D Printer machines; however, the use of motor is not limited to it. You can use the stepper motor in various applications that require precise and controlled rotational motion.

It is a brushless DC motor, so the life of this motor is dependent upon life of the bearings. The position control is achieved by a simple Open Loop control mechanism so doesn’t require complex electronic control circuitry.

The motor’s shaft has been machined for good grip with a pulley, drive gear etc., and especially avoiding stall or slip.

The PCB board is strengthened in the motor, and the unique stator technology is adopted, ensure that the stator teeth of the motor are ground uniformly and cleanly, and the internal control accuracy is high. The speed is stable and accurate without losing step during the working process.

The surface of the motor rotor is coated with imported epoxy resin, which seals the rotor as a whole and is cured at high temperature. After the rotor is processed by abrasion, machining residues such as iron pins are not easy to appear in the tooth grooves. The motor is stable even after long-term use. There is no risk of jamming.
The motor has high overall stability, uniform rotation speed and low noise through Kossel Prusa I3, Ultmaker, corexy and other motors.

We are engaged in supplying and wholesaling a quality approved collection of the Stepper Motors which are highly acknowledged and accepted for long service life and high reliability. To explore more of them click below, 

Stepper Motors


  1. The Nema17 4.2kgcm Stepper motor dimensions and weight may have ±2% error.
  2. Resonances can occur because of improper installment.
  3. Not easy to operate at extremely high speeds.
  4. You need TB6600 or DM542 driver to run NEMA motors because they have switches to provide more current to motors.
  5. Refer to schematic in attachment for more information. This 42HS40-1504 NEMA17 motor has markings as 17HS4401 on the motor.
  6. We have another motor JK42HS40-1204AF-02 NEMA17 which is similar to this one, except JK42HS40-1204AF-02 NEMA17 has 18mm shaft length, 70 cm cable, 40mm motor height, and some technical parameters such as its Supply Current (A) is 1.2 A/Phase. Kindly note and buy accordingly. 


  1. Input pulse decides the rotation angle of the motor.
  2. High accuracy of around 3 to 5% a step.
  3. Provides good starting, stopping and reversing.
  4. Control of this motor is less costly because of exclusion of complex control circuitry.
  5. The speed is proportional to the frequency of the input pulses.
  6. Coil Resistance and Current Rating: The motor’s electrical characteristics include coil resistance and current rating. These specifications are important for selecting an appropriate stepper motor driver to ensure efficient and reliable operation.
  7. Dupont to PH2.0-6P Cable: The included 1-meter Dupont to PH2.0-6P cable simplifies the wiring process when connecting the motor to a control board. Dupont connectors are commonly used in electronics and are easy to connect and disconnect.
  8. Connector Type: The PH2.0-6P connector on the cable is compatible with standard 2.0mm pitch 6-pin connectors commonly found on stepper motor drivers and control boards.
  9. Wire Color Coding: The wires within the cable are typically color-coded for easy identification of motor phases, common ground, and other connections. Common color codes include red and blue or green for the motor phases.
  10. High Precision: Stepper motors like the 17HS4401-22B are known for their high precision and ability to move in discrete steps, making them suitable for applications where precise control of position and speed is required.
  11. Low Maintenance: Stepper motors are known for their reliability and low maintenance requirements, making them suitable for continuous operation in various industrial and DIY projects.
  12. Wide Application: NEMA 17 stepper motors are used in a wide range of applications, including 3D printers, CNC machines, robotics, automation, and more.
  13. Phase Resistance (20℃):2.4*(1±15%)Ω/Phase
  14. Rotating direction:A-C B-D Clockwise
  15. Electrical strength:AC600V/1mA/1S
  16. Positioning Torque: 15 mN.m REF.
  17. Maximum starting rate:≥1500 PPS

Package Includes:

1 x 42HS40-1504 NEMA17 4.2 Kg-cm Stepper Motor – D Type Shaft

SKU: 1645126 Category:
Operating Voltage (VDC)


Rated Current (A)


Inductance (mH/Phase)


Resistance (Ω)

/phase, 2.4*(1±15%)

Number of Phase


D Side Shaft Diameter (mm)


Motor Body Length(mm)


Step Angle (Degree)


Width (mm):


Height (mm):


Weight (g):


Shaft Type

D type

Shaft Length (mm)


Shaft Diameter (mm)


Insulation Resistance (MΩ)

(DC 500V), ≥100

Shipping Weight 0.28 kg
Shipping Dimensions 7 × 7 × 7 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Questions and answers of the customers

  1. 0 votes
    Q Will the connecting wires come free with the motor ? answer now
    Asked by mdthabrez108 on February 14, 2024 1:45 pm

    No, the package of this product does not includ... Read more

  2. 0 votes
    Q will the package have connecting wires with it? answer now
    Asked by ammarbariamu on January 29, 2024 8:25 pm

    No, the connecting wires are provided in packag... Read more

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Country Of Origin: China