NEMA 8 Mini Bipolar Stepper Motor

The NEMA 8 Stepper Motor is a compact and precise motion control motor designed for applications requiring accurate positioning and reliable performance. It features a step angle of 1.8° per step, providing smooth and controlled movement. With a typical holding torque ranging from 0.01 to 0.08 N·m and operating voltage around 5–12 V, it is ideal for small-scale automation, 3D printers, and precision instruments. The NEMA 8 motor is compatible with drivers and control boards for Arduino, Raspberry Pi, STM32, and ESP32, ensuring easy integration into embedded and robotic systems.

General

• Motor Type | Stepper Motor (Bipolar)

• Frame Size | NEMA 8 (20 mm × 20 mm)

• Step Angle | 1.8° per step (200 steps/rev)

Electrical Characteristics

• Rated Voltage | 3.2 V DC

• Rated Current | 0.6 A per phase

• Number of Phases | 2

• Coil Resistance | 5.3 Ω per phase

Mechanical Characteristics

• Shaft Diameter | 4 mm (round or D-shaft)

• Shaft Length | 10–15 mm (depending on model)

• Body Length | 25–38 mm (depending on torque version)

• Holding Torque | up to 0.06 N·m

• Detent Torque | 0.004 N·m

Performance

• Step Accuracy | ±5%

• Maximum Speed | up to 600 rpm (load dependent)

Environmental

• Operating Temperature | −10 °C to +50 °C

• Storage Temperature | −20 °C to +60 °C