LDO 42STH48-2504AH(S45R) Monolith Speedy Power HT

The LDO 42STH48‑2504AH (S45R) is a high‑torque NEMA 17 stepper motor engineered for precision motion control in demanding applications. With its robust 48 mm body, 2.5 A phase current, 1.8° step angle and excellent positional repeatability, it delivers the stability and responsiveness required for modern high‑performance gantry systems.

This model is the recommended stepper motor for the Monolith Gantry, offering the ideal balance of torque, thermal performance, and smooth micro stepping behaviour. Its S45R (45mm round shaft) variant provides secure coupling and reliable long‑term operation in both prototyping and production environments.

Key Features

• NEMA 17 form factor with a compact 48 mm body
• 2.5 A rated current for strong holding torque and dynamic performance
• 1.8° step angle
• High‑precision rotor design for smooth, low‑vibration motion
• S45R 45mm round shaft configuration for secure mechanical integration
• Optimised for the Monolith Gantry, ensuring maximum accuracy and reliability
• Durable construction suitable for continuous‑duty motion systems

Typical Applications

• High‑precision gantry systems
• Resin 3D printers and motion platforms
• CNC linear stages
• Robotics and automation assemblies
• Multi‑axis positioning systems

Datasheet