Creality 42-40 Stepper Motor – 1A 1.8° 0.4N·m – Extruder Motor – Genuine Replacement

The Creality 42-40 Stepper Motor is a genuine Creality replacement motor designed to provide precise and reliable motion control for compatible Creality FDM 3D printers.

Featuring a 1.8° step angle, 1A rated current per phase, and 0.4 N·m holding torque, the 42-40 motor delivers the controlled rotational movement required for accurate filament feeding and other compatible printer motion applications.

Its robust 42 mm frame and 40 mm body provide the torque and stability required for reliable operation during long print jobs.

Product Function

When used as an extruder motor, the 42-40 stepper motor drives the extrusion mechanism responsible for feeding filament toward the hotend.

Precise motor control helps provide:

• Accurate filament feeding
• Consistent extrusion
• Controlled filament retraction
• Smooth extruder operation
• Reliable filament loading
• Stable material flow
• Consistent printing performance

Depending on the printer model and configuration, 42-40 motors may also be used for compatible axis-motion applications.

Key Features

• Genuine Creality replacement stepper motor
• 42-40 motor configuration
• 42 × 42 mm frame
• Approximately 40 mm motor body length
• 1.8° step angle
• 200 steps per revolution
• 1A rated current per phase
• 0.4 N·m holding torque
• Two-phase stepper motor
• Precise rotational control
• Reliable holding force
• Designed for Creality FDM 3D printers
• Suitable for extruder and compatible motion applications
• Ideal replacement for a damaged or malfunctioning original motor

Specifications

Brand: Creality
Product Type: Stepper Motor
Motor Type: 42-40
Phases: 2-Phase
Frame Size: 42 × 42 mm
Motor Body Length: Approx. 40 mm
Step Angle: 1.8°
Steps per Revolution: 200
Rated Current: 1.0A per Phase
Holding Torque: 0.4 N·m
Shaft Type: D-Shaped
Shaft Diameter: Approx. 5 mm
Shaft Length: Approx. 21–22 mm
Approximate Weight: 290 g
Application: Extruder / Printer Motion System
Printer Type: FDM/FFF 3D Printer

Compatible Printers

The Creality 42-40 motor family is used across multiple Creality printers, including applicable configurations of:

• Creality Ender-3
• Creality Ender-3 Pro
• Creality Ender-3 Series
• Creality Ender-5 Series
• Creality CR-10
• Creality CR-10 Series

Compatibility can vary depending on the axis, shaft configuration, pulley/gear configuration, cable connection, and production revision.

Always compare the specifications and physical configuration of your original motor before ordering.

When Should the Stepper Motor Be Replaced?

Consider replacing the motor when troubleshooting:

• Motor does not rotate
• Extruder repeatedly skips
• Inconsistent filament feeding
• Motor stalls during operation
• Abnormal vibration
• Excessive or unusual motor noise
• Damaged motor shaft
• Damaged electrical connector
• Intermittent motor operation
• Loss of torque
• Motor confirmed defective during troubleshooting

If the problem involves filament feeding, inspect the nozzle, hotend, extruder gears, and filament path before replacing the motor. A clogged nozzle or jammed extrusion mechanism can produce symptoms similar to a defective motor.

Important Compatibility Information

Not every Creality 42-40 motor is mechanically identical.

Different versions may use:

• Different shaft lengths
• Round or D-shaped shafts
• Press-fit gears or pulleys
• Different cable lengths
• Different connectors
• Different installation positions

For this reason, compare the original motor, shaft, connector, and mounting configuration before ordering.

Package Includes

• 1 × Creality 42-40 Stepper Motor

Important Notes

This listing is for the stepper motor only unless otherwise specified.

Extruder assemblies, brackets, cables, gears, pulleys, and other printer components are not included unless shown or specifically stated.

Always power off and unplug the printer before replacing a stepper motor.