LDO-42STH48-2804AC(S35) Long-Shaft NEMA 17 Motor

The LDO-42STH48-2804AC(S35) is a 1.8° NEMA 17 stepper motor designed for high-load X/Y motion systems, CoreXY printers and double-shear motor mounts. Its 48 mm body and extended 35 mm D-cut shaft provide the reach needed for supported pulley arrangements and custom belt-drive assemblies.

Rated at 2.8 A per phase, the motor delivers 420 mN·m of holding torque with a low 0.6 mH phase inductance. It includes a 400 ±20 mm twisted-wire cable with PH-6 and JST XHP-4-compatible connections.

Key Features

35 mm Long-Shaft Design

The extended 5 mm D-cut shaft is designed for long-shaft pulley arrangements and double-shear support systems, where the shaft is supported on both sides of the pulley.

420 mN·m Holding Torque

A 48 mm motor body and 2.8 A per-phase rating provide the holding force required for high-load CoreXY A/B drives and other belt-driven motion systems.

Low 0.6 mH Phase Inductance

The low-inductance winding supports responsive current changes, making the motor suitable for motion systems that prioritize acceleration and controlled high-speed movement.

Ready-to-Connect Cable

Includes a 400 ±20 mm UL1007 AWG24 cable with four twisted wires, a motor-side PH-6 connector and a JST XHP-4 or equivalent controller-side connector.

Suitable for:

• CoreXY A/B and other high-load X/Y motion systems
• Double-shear motor mounts using an extended 35 mm shaft
• Voron 2.4, Voron Trident, VZBot, Rat Rig and Annex-style builds when the mounting system is designed for a long-shaft motor
• Custom Cartesian 3D printers with belt-driven motion systems
• Compact CNC machines, robotics and automation projects
• Pulleys and couplers with a 5 mm bore

Before ordering, confirm the motor body clearance, shaft length, pulley position, mounting pattern, driver current capability and cable connector compatibility. This is the standard-temperature AC version, not the AH high-temperature version.

Installation Notes

• Confirm clearance for the 48 mm motor body and extended 35 mm shaft.
• Use a pulley or coupler with a 5 mm bore; no gear or pulley is integrated.
• Verify both coil pairs before connecting the motor to the driver.
• Set the driver current according to its RMS or peak-current convention.
• Confirm the JST XHP-4-compatible connection matches your controller wiring.

1 × LDO-42STH48-2804AC(S35) NEMA 17 Stepper Motor