Precision linear motion module for 3D printers and small automation projects. This DC 15V 2phase 4wire linear stepper provides reliable, controllable linear travel with an integrated nut and a 122 mm slide stroke. Its 15 ohm coil resistance suits common stepper drivers and low to moderate voltage supplies. Key benefits Precise, controllable linear motion for accurate positioning in printing and automation. Ready to mount with an integrated nut to simplify installation and reduce parts count. Compact 122 mm slide stroke fits common 3D printer axes and compact mechanisms. 2phase 4wire design offers straightforward wiring and compatibility with most stepper drivers. 15 ohm coil resistance matched to DC 15V operation for stable current behavior and predictable step response. Minimal setup required for upgrades or replacements, reducing downtime. What this product does Converts rotary stepper motion into linear travel through an integrated nut and lead mechanism. Provides incremental steps for precise movement control suitable for layer height adjustments, bed leveling mechanisms, and small linear actuators. Works with standard stepper control electronics that accept 2phase 4wire inputs at DC 15V. Key specifications Voltage: DC 15V Phase: 2phase Wiring: 4wire Stroke length: 122 mm Coil resistance: 15 ohms Included: Nut for linear engagement Primary use: For 3D printer linear actuation and similar applications Compatibility and fit Designed for use with stepper drivers and controller boards that support 2phase 4wire motors at DC 15V. Compact 122 mm stroke and standard wiring make it suitable for direct replacement or integration into custom motion systems. Check mechanical mounting points and driver current settings before installation to ensure proper fit and operation. Practical use scenarios or upgrade a 3D printer Z axis or linear actuator to regain precise vertical travel and reduce play. Build a compact filament feed or bed leveling mechanism that requires reliable shortrange linear motion and repeatable steps. Integrate into small laboratory or hobby automation projects such as pick and place fixtures, limited travel CNC tasks, or robotic linear slides where controlled linear displacement is required. Installation tips Verify driver current limits and adjust microstepping settings for smooth motion and accurate positioning. Secure the nut and slide assembly to avoid axial play and maintain repeatability. Use appropriate mounting brackets or couplers compatible with the motor body and stroke length. Why choose this module Simple, focused specification set for straightforward integration into 3D printers and compact motion systems. Direct, plug compatible 2phase 4wire interface reduces wiring complexity. Builtin nut and defined 122 mm stroke reduce the need for extra components and simplify assembly. This linear stepper module offers a dependable, compact solution for precise shortstroke linear motion in 3D printing and small automation projects.