• Products Details
Basic Infomation
Place of Origin: China
Brand Name: JSS-MOTOR
Certification: CE, RoHS, ISO9001
Model Number: 42HS40-0404
High Light:

nema 17 12v bipolar stepper motor


nema 17 bipolar stepper motor 4.2 kg-cm


nema 17 42mm 2 phase 4 wires bipolar stepper motor

Payment & Shipping Terms
Packaging Details: cartons
Delivery Time: 1-15days
Payment Terms: T/T, Western Union,credit card, paypal
Supply Ability: 50000pcs/month
Name: Bipolar Stepper Motor
Phase NO.: 2
Step Angle: 1.8°
Phase Current: 0.4A
Phase Voltage: 12VDC
Phase Resistance: 30Ω
Phase Inductance: 60mH
Holding Torque:
Motor Length: 40mm
Lead Wires: 4
Weight: 0.3kg
Product Description

NEMA 17 12VDC hybrid stepper motor 40mm length bipolar



1.Small size, convenient storage and placement.

2.The speed is even and does not lose steps.

3.It is a bipolar stepper motor.

4.Revolving speed is stable and the noise is low.

5.Made of high quality material for durablity.



1.Stable characteristics, high reliability.

2.Easy installation and replacement.



Material: Metal

Color: Black

Step Angle(W/O Gearbox): 1.8°

Holding Torque:

Rated Current/Phase: 0.4A

Phase Resistance: 30ohms

Recommended Voltage: 12-24V

Inductance: 60mH±20%(1KHz)

Shaft Maximum Axial Load: 50N

Shaft Maximum Radial Load: 100N




Stepper motor are widely applied in 3D printer, mini cnc router, engraving machine, textile machine, medical equipment, stage light equipment, robotic, CNC router, music fountain, and other industrial automatic equipment.



     Our main products include from size NEMA 8, NEMA11, NEMA14, NEMA16, NEMA17, NEMA 23, NEMA24, NEMA 34, NEMA 42, NEMA52 series hybrid stepper motor, and variable sizes linear stepper motor, geared stepper motor, stepper motor with brake. And we have products about easy servo system of nema17, nema23, nema24 and nema34 sizes. In addition, we can produce suitable drivers for all the motors. And we are always researching and developing new products.




NEMA 17 2-phase 1.8° hybrid stepper motor



Step Angel 1.8°
Temperature Rise 80℃
Ambient Temperature -20℃ Max ~ +50℃
Isulation Resistence 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 75N (20mm from the flange)
Max. Axial Force 15N


Electrical Specifications:

Model No Step Angle(°) Rated Voltage(V) Rated Current (A) Phase Resistance(Ω) Phase Inductance (mH) Holding Torque ( Detent Torque  ( Max) Rotor Inertia (g.cm²) Motor Length (mm) Leads No. Motor Weight(Kg)
42HS40-0404 1.8


0.4 30 60 4.2 220 54 40 4 0.28
42HS40-0804 1.8 5.4 0.8 6.8 12 4.5 220 54 40 4 0.28
42HS40-1684 1.8 2.8 1.68 1.68 3.4 4 220 54 40 4 0.28
42HS40-1704 1.8 3.4 1.7 2 3 4 220 54 40 4 0.28
42HS40-1206 1.8 4.0 1.2 3.3 3.5 2.97 220 54 40 6 0.28



12v Nema 17 4.2 Kgcm Stepper Motor Bipolar 42mm 40mm 2 Phase 4 Wires 0         


12v Nema 17 4.2 Kgcm Stepper Motor Bipolar 42mm 40mm 2 Phase 4 Wires 1


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We provide a one-stop service integrating design, production, delivery, and after-sales service. During this meeting, feel free to communicate your ideas and ask lots of questions.


The products cover the domestic market with its excellent quality and are exported to Europe, North America and other developed countries and developing countries in Southeast Asia, Africa, the Middle East and so on.

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