NEMA 8 Stepper Motor 20BYGH28

NEMA 8 Stepper Motor  20BYGH28

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.

Features

• 1.8° (200 steps/rev) step angle with ±5 % accuracy.
• Bipolar, 2-phase (4-lead) microstepping-compatible wiring.
• Rated current 0.2 A per phase.
• Phase resistance 24 Ω (±10 %).
• Phase inductance 8 mH (±20 %).
• Holding torque 0.16 N·cm.
• 4 mm round shaft with minimal radial and axial play.
• High insulation resistance and dielectric strength.
• Supports continuous operation with ≤ 80 °C rise; ambient –10 °C – +50 °C.

Specifications

Applications

• Precision micro-robotics and lab automation.
• Compact camera gimbals and actuators.
• Miniature positioning mechanisms and valves.
• Medical devices and instrumentation.
• Educational STEM and hobbyist motion projects.

Package Contents

• 1x NEMA 8 Stepper Motor 20BYGH28.
• Integrated 30cm 4-wires connection cable.

Datasheet

• 20BYGH28 NEMA 8.