NEMA 17 Stepper Motor 42BYGH40
The 42BYGH40 is a two-phase bipolar hybrid motor featuring a 1.8° (200 steps/rev) step angle and a 40 mm motor length. It draws 1.5 A per phase with phase resistance 2 Ω (±10%), has phase inductance 3 mH – 3.2 mH (±20%), and produces 0.4 Nm holding torque. Equipped with a 5 mm D-type shaft, the motor offers insulation resistance ≥ 100 MΩ @ 500 VDC and dielectric strength 500 VAC for 1 min. It supports continuous operation with temperature rise ≤ 80 °C, operating ambient –20 °C to +50 °C, storage –20 °C to +70 °C, and utilizes a standard 4‑lead bipolar wiring configuration.
Features
- 1.8° (200 steps/rev) step angle with ±5 % accuracy.
- Bipolar 2-phase (4‑lead) microstepping-compatible wiring.
- Rated current 1.5 A per phase.
- Phase resistance 2 Ω (±10%).
- Phase inductance 3 mH – 3.2 mH (±20%).
- Holding torque 0.4 Nm.
- 5 mm D-type shaft for secure coupling.
- High insulation (≥ 100 MΩ @ 500 VDC) and dielectric capability (500 VAC / 1 min).
- Designed for continuous duty with ≤ 80 °C rise in –20 °C to +50 °C ambient.
Specifications
| Parameter | Value |
|---|---|
| Model | 42BYGH40 |
| Step Angle | 1.8° (200 steps/rev) |
| Step Accuracy | ±5 % |
| Phases | 2 (bipolar, 4‑wire) |
| Rated Current | 1.5 A/Phase |
| Phase Resistance | 2 Ω (±10 %) |
| Resistance Accuracy | ±10 % |
| Insulation Resistance | ≥ 100 MΩ @ 500 VDC |
| Phase Inductance | 3 mH – 3.2 mH (±20 %) |
| Inductance Accuracy | ±20 % |
| Holding Torque | 0.4 Nm |
| Detent Torque | 0.016 Nm |
| Rotor Inertia | 350 g·cm² – 450 g·cm² |
| Temperature Rise | ≤ 80 °C |
| Ambient Temperature Range | –20 °C – +50 °C |
| Storage Temperature Range | –20 °C – +70 °C |
| Dielectric Strength | 500 VAC for 1 min |
| Number of Leads | 4 |
| Motor Length | 40 mm |
| Shaft Diameter | 5 mm D‑type |
Torque vs Speed
Applications
- 3D printer extruder and motion axes.
- Mini CNC routers and desktop milling machines.
- Robotics and automated mechanisms.
- Camera sliders and precise positioning systems.
- Hobbyist and educational motion-control platforms.
Package Contents
- 1x NEMA 17 Stepper Motor 42BYGH40.
- 1x 50cm 4-wires connection cable.
