42STH25-1004A 60mm 2-Phase Stepper Motor for DIY 3D Printer I3 Builds

This stepper motor is a practical component for DIY 3D printer enthusiasts working on I3-style machines. It provides the precise rotational control needed for axes, extruders, and other motion systems. The motor is rated at 1.5A and 3.6VDC, making it compatible with many common stepper driver boards. Its 60mm height and standard NEMA 17 flange pattern simplify mounting in typical printer frames. Available in black or white, it allows you to match your build's colour scheme. The motor is sold individually, colour specified at purchase.

Features and Construction

The motor is built around a 2-phase design, offering reliable step resolution for 3D printing tasks. Its electrical ratings support consistent torque output under load.

Electrical Specifications

Operates at 3.6VDC with a rated current of 1.5A per phase. These values align with standard A4988, DRV8825, and similar driver board settings. The two-phase arrangement provides standard 1.8° step angle, enabling fine positioning control.

Mechanical Build

The motor body measures 60mm in height, fitting most I3-style frames without clearance issues. It uses steel rotor and shaft, copper windings, and aluminium end caps for thermal management. The 4-wire connector simplifies wiring to driver boards.

Size and Practical Fit

At 60mm tall, the motor is compact enough for space-constrained builds yet provides adequate torque for light-duty axes and extruders. Its flange mount uses standard NEMA 17 hole spacing, widely supported by 3D printer brackets and kits.

Uses and Placement

This stepper motor is intended for DIY 3D printer projects, particularly those based on the Prusa I3 design and its variants. It can drive X, Y, or Z axes, as well as direct-drive extruders within its torque range.

Event or Professional Use

For makers building or repairing prototype and small-batch 3D printers, this motor offers a direct replacement or new-build component. Its electrical specs match common control boards, reducing setup time.

Everyday Home Use

Home hobbyists working on custom 3D printer upgrades or building a printer from a kit will find this motor straightforward to integrate. Choose black or white to match your printer's appearance.

Benefits and Buying Value

The motor's standard electrical and mechanical specifications make it a simple, reliable choice for I3-style builds. It avoids unnecessary complexity while delivering the motion control required for 3D printing.

Reuse and Low Maintenance

Stepper motors generally require no routine maintenance beyond ensuring clean connections and adequate cooling. This unit can be reused across multiple projects or replaced easily due to its standard dimensions.

Why Choose This Product

If you need a drop-in stepper motor for a DIY I3 3D printer with specific 1.5A and 60mm height requirements, this unit provides the exact specs without extra features that add cost or complexity.