NEMA 17 Shaft-Reversed Stepper Motor, 4.2V, 1.2A

This NEMA 17 shaft-reversed stepper motor delivers reliable, high-torque positioning for precision motion control. Operating at 4.2V DC with 1.2A per phase, it is typically used in open-loop digital control systems. It is an ideal drive component for makers, students, and hobbyists building DIY 3D printers and CNC machines.

High-torque precision motion

With a standard 1.8-degree step angle and a minimum holding torque of 40N.cm, this motor offers dependable accuracy at low speeds. Its rugged construction provides reliable operation across holding and positioning applications.

Shaft-reversed design

Featuring a shaft-reversed configuration and a standard 43.2 x 43.2 mm faceplate, this 42 BYG motor fits NEMA 17 mounting profiles. It offers a larger frame and higher torque output compared to smaller motors such as NEMA 14.

Included wiring

The motor comes pre-wired with a 70cm 4-lead cable using AWG26 UL1007 wire for easy connection to standard stepper drivers.

Typical applications

This unit is frequently used in open-loop digital control setups for 3D printers, DIY CNC routers, and general robotics projects.