Upgrade your 3D printer’s motion system with the LDO 42STH48-2504AC RevA 1.8° 48mm NEMA 17 Stepper Motor — a high-torque, reliable motor from LDO Motors, trusted in the Voron and 3D printing community.
This standard 1.8° stepper motor (200 steps/rev) delivers strong holding torque in a compact 48mm body length, making it ideal for X, Y, Z, and extruder axes. It offers smooth operation, good speed capability, and excellent value for both stock replacements and custom builds.
Key Specifications:
- Step Angle: 1.8° (±5%)
- Form Factor: NEMA 17
- Body Length: 48mm
- Rated Current: 2.5A / phase
- Holding Torque: 5.5 kg·cm (55 N·cm / 0.55 Nm)
- Shaft Diameter: 5mm (D-cut or round, ~24mm length)
- Phase Resistance: 1.2Ω (±20%)
- Phase Inductance: 1.5 mH (±20%)
- Wiring: 4-wire with 1m PVC cable + JST-XH 4-pin connector
- Insulation Class: Class B (130°C)
- Weight: ~350g
Key Features & Benefits:
- High Torque Output — Strong holding power for reliable movement even at higher speeds
- Smooth & Quiet Operation — Excellent when paired with TMC2209, TMC2240, or TMC5160 drivers in StealthChop mode
- Reliable LDO Quality — Optimized for 3D printing with low detent torque and consistent performance
- Easy Integration — Standard NEMA 17 mounting and popular JST-XH connector