KH MOTOR Nema 17 42BYGH34-30-30A

KH MOTOR 42BYGH34-30-30A / NO:201511 Stepper Motor

The KH MOTOR 42BYGH34-30-30A is a compact NEMA 17 hybrid stepper motor designed for electronics, robotics, and mechanical projects that require precise, stable, and programmable motion. Its compact construction makes it easy to integrate into 3D printers, small CNC machines, motorized positioning systems, laboratory equipment, and automation prototypes.

This model belongs to the 42BYGH34 family, whose common versions feature a 1.8° step angle, two phases, a body length of approximately 34 mm, a rated current near 1.3 A per phase, and a holding torque in the range of 0.28 to 0.30 N·m. It provides a practical balance of compact size, controlled power consumption, and holding force for light-duty precision mechanisms.

Main technical specifications:

• Type: Hybrid bipolar stepper motor

• Frame size: NEMA 17 / approximately 42 × 42 mm front face

• Step angle: 1.8° per step, 200 steps per revolution

• Number of phases: 2 phases

• Wiring: typically 4 wires

• Rated current: approximately 1.3 A per phase

• Holding torque: approximately 0.28 to 0.30 N·m

• Motor body length: approximately 34 mm

• Shaft diameter: typically 5 mm, D-shaft type depending on the version

• Shaft length: approximately 23 mm, depending on the version

• Approximate body dimensions: 42 × 42 × 34 mm, excluding the shaft

• Approximate weight: 240 to 250 g.digitalzakka+2

Applications:

• 3D printers: X, Y, Z axes and extruders

• Compact CNC routers, engravers, and milling machines

• Vinyl cutters and automated plotters

• Robotics, automated models, and educational equipment

• Motorized gantries and linear guide systems

• Light laser engraving machines

• Sensor, camera, and platform positioning equipment

• Small conveyors and automatic dispensing mechanisms

Project examples:

• Building a DIY 3D printer or replacing an existing axis motor.

• Creating an Arduino CNC machine for PCB, plastic, or light wood engraving.

• Designing a line-following robot with a motorized gripper arm.

• Building a motorized camera slider or panoramic camera platform.

• Making a product, food, ticket, or component dispenser.

• Automating a small conveyor for an academic or industrial prototype.

• Developing a computer-controlled screen-printing, drawing, drilling, or engraving machine.

Specifications may vary slightly by manufacturing batch and wiring configuration. Before installation, check the wire sequence, rated phase current, shaft dimensions, and torque requirements in order to select the right driver and correctly set its current limit.