• 2 phase, NEMA17 frame size
• 48 mm long
• 2.5 A phase current
• 0.48 N.m holding torque
• 5 mm shaft size
• Built with high quality materials.High precision, low motor heating, and low vibration。
The 42J1848-425 is a NEMA17 (42 mm) 2-phase stepper motor, 48 mm long, with 0.48 N·m at a 2.5 A phase current and a 5 mm shaft. Its higher current rating extracts strong torque from a compact body.
With 2.5 A the motor produces 0.48 N·m in a compact frame, which suits laboratory mechanisms and pump drives that need dependable torque in a small footprint. The winding accepts sustained driving current from a capable microstepping driver.
Laboratory dispensing and pump systems value compact torque with smooth stepping. The motor provides repeatable fluid or sample positioning without encoder feedback, simplifying instrument control.
The higher current requires adequate cooling to maintain rated torque under continuous duty; mount on a heat-sink surface where possible.
The low height and predictable stepping suit 3D printer axes and quiet medical mechanisms where space and smoothness are prioritized.
| Model | 42J1848-425 |
| Phase | 2 |
| Step Angle（deg） | 1.8 |
| Holding Torque(N·m) | 0.48 |
| Rated Current（A） | 2.5 |
| Phase Resistance(ohm) | 1.25 |
| Phase Inductance（mH） | 2.5 |
| Detent Torque（mN·m） | 260 |
| Rotor inertia（g·cm²） | 82 |
| Insulation Class | B |
| Number of Leads | 4 |
| Weight（kg） | 0.35 |
| Length（mm） | 48 |
| Matched Drive | 2DM522-RC/EC 2DM420 |
| Frame Size（NEMA） | 17 |
| Shaft Diameter（mm） | 5 |
| Frame Size(mm) | 42 |
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