LDO-42STH48-2804AH High-Temp NEMA 17 Stepper Motor

The LDO-42STH48-2804AH is a 1.8° Super Power HT NEMA 17 stepper motor designed for CoreXY printers and other high-load motion systems operating in elevated-temperature environments. Its 48 mm body delivers 420 mN·m of holding torque at a rated current of 2.8 A per phase.

Class H 180°C insulation and 200°C-rated Teflon leads provide additional thermal durability for enclosed printer builds. The motor features a 5 mm D-cut shaft and an integrated 1000 ±20 mm cable with a JST XH2.54-4P-compatible connector.

Key Features

Class H High-Temperature Construction

Class H 180°C motor insulation and UL1332 Teflon leads rated to 200°C make this model suitable for enclosed printers and other thermally demanding installations.

420 mN·m Holding Torque

The 48 mm motor body provides 4.2 kgf·cm of holding torque for CoreXY X/Y motion, high-load belt drives and custom positioning systems.

2.8 A Low-Inductance Winding

A 2.8 A per-phase rating and 0.6 mH phase inductance support responsive motion when paired with a correctly configured current-controlled stepper driver.

Integrated Cable and D-Cut Shaft

The motor includes a 1000 ±20 mm AWG24 Teflon cable for convenient routing in larger machines. Its 24 ±0.5 mm long, 5 mm D-cut shaft accepts compatible pulleys, gears and couplers.

Suitable for:

• Enclosed CoreXY 3D printers
• High-load X/Y and belt-driven motion systems
• Custom Voron, VZBot, Rat Rig and Annex-style builds with matching dimensions
• CNC machines, robotics and positioning equipment
• Applications requiring high-temperature motor insulation and wiring

Confirm before ordering:

• NEMA 17 mounting compatibility
• Clearance for the 48 mm motor body
• Clearance for the 24 ±0.5 mm output shaft
• Compatibility with a 5 mm D-cut shaft
• Stepper driver current capacity
• JST XH2.54-4P-compatible connection

Installation Notes

• Confirm motor-body and shaft clearance before installation.
• Use a pulley or coupler designed for a 5 mm D-cut shaft.
• Verify both coil pairs before connecting the driver.
• Set the current according to the driver’s RMS or peak-current convention.
• Route the cable away from moving parts and direct heat sources.

1 × LDO-42STH48-2804AH High-Temperature NEMA 17 Stepper Motor