NEMA 11 Stepper Motor 28BYGH50
The 28BYGH50 is a two-phase bipolar hybrid motor with a 28 × 28 mm flange and a 50 mm stack, delivering 1.8° (200 steps/rev) resolution. It’s wired in a 4‑lead configuration and features a 5 mm D-type shaft. This version is wound for 1 A per phase with 4 Ω resistance, resulting in holding torque of approximately 0.17 Nm. Phase inductance is estimated at 5 mH – 6 mH, with insulation resistance ≥ 100 MΩ @ 500 VDC and dielectric strength 500 VAC for 1 min. It supports continuous operation with temperature rise ≤ 80 °C in ambient –20 °C to +50 °C environments.
Features
- 1.8° (200 steps/rev) step angle with ±5 % accuracy.
- Bipolar, 2‑phase (4‑lead) microstepping-compatible wiring.
- Rated current 1 A per phase.
- Phase resistance 4 Ω.
- Phase inductance 5 mH – 6 mH.
- Holding torque 0.17 Nm.
- 5 mm D-type shaft for secure coupling.
- High insulation ≥ 100 MΩ @ 500 VDC; dielectric strength 500 VAC / 1 min.
- Continuous operation with ≤ 80 °C rise; ambient –20 °C – +50 °C.
Specifications
| Parameter | Value |
|---|---|
| Model | 28BYGH50 |
| Step Angle | 1.8° (200 steps/rev) |
| Step Accuracy | ±5 % |
| Phases | 2 (bipolar, 4‑wire) |
| Rated Current | 1 A/Phase |
| Phase Resistance | 4 Ω |
| Resistance Accuracy | ±10 % (typical) |
| Insulation Resistance | ≥ 100 MΩ @ 500 VDC |
| Phase Inductance | 5 mH – 6 mH |
| Inductance Accuracy | ±20 % |
| Holding Torque | 0.17 Nm |
| Detent Torque | ~0.03 Nm |
| Rotor Inertia | ~18 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 | 50 mm |
| Shaft Diameter | 5 mm D‑type |
NOTE: notice the twist between the green and blue wires at the connector end.
Applications
- Compact CNC rotary tools and engraving machines.
- Desktop 3D printers and precision positioning.
- Small robotics and actuation systems.
- Camera sliders and automation equipment.
- Laboratory and medical device motion control.
Package Contents
- 1x NEMA 11 Stepper Motor 28BYGH50.
- Integrated 50cm 4-wires connection cable.
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