• 3 phase, NEMA23 frame size
• 79 mm long
• 5.8 A phase current
• 1.5 N.m holding torque
• 8 mm shaft size
• Built with high quality materials.High precision, low motor heating, and low vibration。
The 57J1276-658 is a three-phase open-loop stepper motor in a NEMA23 frame, delivering 1.5 N.m of holding torque at a 5.8 A per-phase current. Its 79 mm body is a practical size for light handling and positioning mechanisms that need dependable repeatability rather than high torque.
Three-phase excitation gives smooth, low-vibration stepping, which helps maintain accuracy in indexing tasks and reduces acoustic noise in operator-adjacent equipment. The 5.8 A winding provides strong peak response for its size while the design controls temperature rise over moderate duty cycles.
The 8 mm shaft connects to light couplings and pulleys. Open-loop control keeps wiring to step and direction signals only. The NEMA23 flange is a standard, widely sourced mounting dimension.
It is suited to motion control in Compact CNC Equipment, desktop CNC systems, robotics, Packaging Machinery, Factory Automation, Textile Machinery, Printing Machinery, Food Processing, and Light-Duty Handling and Positioning Mechanisms.
Match it to a 3-phase drive rated for at least 5.8 A. For light-duty positioning the motor provides a simple, reliable open-loop solution without encoder feedback or gain tuning.
| Model | 57J1276-658 |
| Phase | 3 |
| Step Angle（deg） | 1.2 |
| Holding Torque(N·m) | 1.5 |
| Rated Current（A） | 5.8 |
| Phase Resistance(ohm) | 0.86 |
| Phase Inductance（mH） | 2 |
| Detent Torque（mN·m） | 700 |
| Rotor inertia（g·cm²） | 480 |
| Insulation Class | B |
| Number of Leads | 6 |
| Weight（kg） | 1.1 |
| Length（mm） | 79 |
| Matched Drive | 3DM783 |
| Frame Size（NEMA） | 23 |
| Shaft Diameter（mm） | 8 |
| Frame Size(mm) | 57 |
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