NEMA 17 High-Torque Stepper Motor – 42×42 mm, 1.8° Step Angle, Bipolar, Precision Motion Contro

The NEMA 17 Stepper Motor is a compact, high-precision motion control solution designed for applications requiring accurate positioning, smooth rotation, and reliable holding torque. Built with a standardized 42 × 42 mm mounting face, this motor is fully compatible with a wide range of mechanical systems and accessories.

With a 1.8° step angle (200 steps per revolution) and a robust hybrid stepper design, this motor delivers consistent performance for 3D printers, CNC machines, robotics, automation equipment, and motion-driven projects. Its bipolar 2-phase configuration ensures efficient current control and smooth microstepping when paired with modern stepper drivers.

⚙️ Key Features

•Standard NEMA 17 (42×42 mm) mounting footprint

•High positioning accuracy with 1.8° step angle

•Strong holding torque for stable load control

•Bipolar 2-phase design for smooth and efficient motion

•Compatible with popular stepper drivers and controllers

•Durable construction for continuous operation

•Easy integration into existing motion systems

📐 Mechanical Specifications

•Frame Size: 42 × 42 mm (NEMA 17 standard)

•Motor Body Length: Varies by model (commonly 34 mm / 40 mm / 48 mm / 60 mm)

•Shaft Diameter: 5 mm

•Shaft Type: Round shaft with flat (model dependent)

•Mounting Hole Spacing: 31 mm

•Mounting Holes: 4 × M3

•Weight: Approximately 250 g – 500 g (depending on motor length)

⚡ Electrical Specifications

•Motor Type: Hybrid Stepper Motor

•Phases: 2-phase

•Step Angle: 1.8° per step (200 steps per revolution)

•Wiring Configuration: 4-wire bipolar

•Rated Current / Phase: 1.0 A – 2.8 A (model dependent)

•Phase Resistance: 1 Ω – 3 Ω

•Phase Inductance: 2 mH – 5 mH

•Recommended Supply Voltage: 12 V or 24 V (current-controlled driver required)

🧲 Performance Specifications

•Holding Torque: 30 N·cm – 65 N·cm (varies by motor length)

•Detent Torque: Low, for smoother unpowered movement

•Microstepping Support: Yes (driver dependent)

•Rotor Inertia: Optimized for fast acceleration and precise control

🌡️ Environmental & Reliability

•Operating Temperature: -20 °C to +50 °C

•Maximum Temperature Rise: ≤80 °C

•Insulation Resistance: ≥100 MΩ

•Dielectric Strength: 500 VAC (1 minute)

•Protection Rating: IP40 (higher protection available with enclosure)

🔌 Wiring Information

•Typical Coil Pairs:

•Phase A: Red / Blue

•Phase B: Green / Black

(Wire colors may vary by batch. Always verify coil pairs using a multimeter before connection.)

•Lead Length: 300 mm – 1000 mm (varies by model)

•Connector Type: Open leads or connector (model dependent)

🛠️ Compatible Drivers & Controllers

•Works with common stepper drivers such as A4988, DRV8825, and TMC series

•Compatible with Arduino, Raspberry Pi, STM32, and other motion controllers

•Supports full-step, half-step, and microstepping operation

🔄 Applications

•3D printers (X, Y, Z axes and extruders)

•CNC routers and milling machines

•Laser cutters and engravers

•Robotics and automation systems

•Camera sliders and motion rigs

•Pick-and-place machines

•Conveyor and positioning systems

📦 Package Includes

•1 × NEMA 17 Stepper Motor

(No cables, drivers, or mounting hardware