NEMA 8 Stepper Motor 20BYGH28

Description

The 20BYGH28 is a two-phase bipolar hybrid motor with a 20 × 20 mm flange and 28 mm body length, offering a 1.8° (200 steps/rev) step resolution. It features a 4-lead configuration and a 4 mm round shaft. The motor is designed for 0.2 A per phase, 24 Ω phase resistance (±10 %), 8 mH inductance (±20 %), and delivers 0.16 N·cm (2.2 oz‑in) holding torque. Other specs include insulation resistance ≥ 100 MΩ @ 500 VDC, dielectric strength 500 VAC, shaft radial play ≤ 0.06 mm, shaft axial play ≤ 0.08 mm, Class B insulation, rotor inertia 1.8 g·cm², and 80 °C max temperature rise, operating in environments from –10 °C to +50 °C.