Size 42mm NEMA 17 Stepper Motor 0.3 N-m/0.4 N-m/0.5 N-m/0.7 N-m with Magnetic Hole

This NEMA 17 bipolar stepper motor series (42mm frame) is available in holding torque options of 0.3 N·m, 0.4 N·m, 0.5 N·m, and 0.7 N·m, all within a standard 42 × 42 mm footprint and body lengths tailored to each torque level (typically ranging from approximately 28 mm to 48 mm). Each model features a precise 1.8° step angle, 4-wire bipolar wiring, rated currents in the 1.2 A to 1.8 A per phase range, and a standard Φ5 mm shaft, with the defining feature being a rear magnetic hole that allows for direct mounting of a magnetic encoder for closed-loop feedback or convenient shaft access. This combination of compact size, torque scalability, and encoder-ready design makes the series well suited to precision motion axes and extruders in desktop 3D printers, small CNC routers and engravers, automated pick-and-place heads, camera positioning systems, laboratory and medical instruments, and light-duty robotic joints requiring reliable open- or closed-loop positioning. The matched drive is M322C.

General Specification

• Temperature Rise: 80K Max
• Ambient Temperature: -20°C to +50°C
• Insulation Class: Class B
• Insulation Resistance: 500VDC 100MΩ Min
• Dielectric Strength: 500VAC 50Hz 1min, Leakage Current ≤ 5mA

NEMA 17 (Size 42mm) Stepper Motor with Magnetic Hole

Connection