NEMA 17 Integrated Closed Loop Stepper Motor 42BYGH40
The 42BYGH40 combines a 42 × 42 mm flange and 40 mm stack with a built-in 1000 PPR incremental encoder, enabling closed-loop control to prevent missed steps and improve accuracy. It’s wound for 1.5 A per phase with 1.8 Ω (±10 %) phase resistance and 3.6 mH inductance, yielding 0.42 N·m holding torque.
Features
- 1000 PPR (4000 CPR) encoder for closed-loop feedback.
- Rated current 1.5 A per phase, designed for reliable high-current operation.
- Phase resistance 1.8 Ω (±10 %) and inductance ~3.6 mH.
- Holding torque 0.42 N·m for robust static performance.
- Bipolar, two-phase (4‑wire) configuration compatible with standard stepper drivers.
- Closed-loop control reduces heat and improves efficiency compared to open-loop versions.
- Ideal for precision applications requiring feedback and torque stability.
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 | 1.8 Ω (±10 %) |
| Resistance Accuracy | ±10 % |
| Insulation Resistance | ≥100 MΩ @ 500 VDC |
| Phase Inductance | ~3.6 mH |
| Inductance Accuracy | ±20 % |
| Holding Torque | 0.42 Nm |
| Number of Leads | 4 |
| Motor Length | 40 mm |
| Encoder Resolution | 1000 PPR / 4000 CPR |
| Shaft Diameter | 8 mm D‑type |
| Ambient Temperature Range | –20 °C – +50 °C |
| Temperature Rise | ≤ 80 °C |
Applications
- Robotic arms, precision motion stages, and closed-loop CNC axes.
- High-accuracy 3D printers, pick-and-place systems, and medical instruments.
- Any application requiring reliable position feedback and torque stability.
Package Contents
- 1x NEMA 17 Closed‑Loop Stepper 42BYGH40.
- 1x 50cm 8-wires encoder signal and connection cable.
