NEMA 17 Hybrid Stepper Motor JK42HS40-1704-13A, 1.7A, 1.8°
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Prices updated: 14 Oct 2026
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About this product
42 mm (NEMA 17) hybrid stepper motor with a 1.8° step angle and 1.7 A rated current per phase. It has a 5 mm D-shaft and four lead wires, and is widely used in 3D printers, CNC machines and other positioning systems. Rated for ambient temperatures from -20°C to +50°C.
Specifications
- Frame size
- NEMA 17 (42 × 42 mm)
- Step angle
- 1.8°
- Current per phase
- 1.7 A
- Resistance per phase
- 1.5 Ω
- Inductance per phase
- 2.3 mH
- Body length
- 40 mm
- Shaft
- D-shaft, Ø5 mm × 21 mm
- Lead wires
- 4
Frequently asked questions
How do I wire the four leads?
This is a 4-lead bipolar motor with two coils. Connect one coil to A+ and A- and the other to B+ and B- on the driver. Identify each coil with a multimeter: the two wires of one coil show continuity with each other.
What current should I set on the driver?
Set the driver current at or below the rated 1.7 A per phase. Use a stepper driver rated for at least that current, and provide heat sinking or cooling if the driver runs hot.
