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STN057 Series
● 2-Phase Hybrid Stepper Motor
● Step Angle: 0.9° / 1.8°
● Standard NEMA 23 Dimensions, 56x56mm
● High Torque, High Precision, High Efficiency, High Reliability
● Small Size, Smooth Movement, Low Inertia
▍Specification and Order Code
2-Phase, Unipolar (6 Leads):
| Model Name | Step Angle | Current | Resistance | Inductance | Holding Torque | Motor Length | Inertia | Mass Weight | |
| Single Shaft | Dual Shaft | Deg. | A/Phase | Ω / phase | mH / Phase | N.cm (kgf.cm) | mm | X10-7Kg.m2 | kg |
| STN057-2H-416-300S | STN057-2H-416-300D | 0.9° | 3 | 0.5 | 0.5 | 0.39 (3.9) | 41 | 150 | 0.47 |
| STN057-2N-416-100S | STN057-2N-416-100D | 1.8° | 1 | 5.35 | 5.2 | 0.39 (3.9) | 41 | 150 | 0.47 |
| STN057-2N-416-200S | STN057-2N-416-200D | 1.8° | 2 | 1.3 | 1.3 | 0.39 (3.9) | 41 | 150 | 0.47 |
| STN057-2N-416-300S | STN057-2N-416-300D | 1.8° | 3 | 0.51 | 0.45 | 0.39 (3.9) | 41 | 150 | 0.47 |
| STN057-2H-546-200S | STN057-2H-546-200D | 0.9° | 2 | 1.8 | 3.1 | 0.9 (9.0) | 54 | 280 | 0.7 |
| STN057-2H-546-300S | STN057-2H-546-300D | 0.9° | 3 | 0.75 | 1.25 | 0.9 (9.0) | 54 | 280 | 0.7 |
| STN057-2N-556-100S | STN057-2N-556-100D | 1.8° | 1 | 7.5 | 12 | 0.9 (9.0) | 55 | 280 | 0.7 |
| STN057-2N-556-200S | STN057-2N-556-200D | 1.8° | 2 | 1.85 | 3.6 | 0.9 (9.0) | 55 | 280 | 0.7 |
| STN057-2N-556-300S | STN057-2N-556-300D | 1.8° | 3 | 0.8 | 1.2 | 0.9 (9.0) | 55 | 280 | 0.7 |
| STN057-2N-556-400S | STN057-2N-556-400D | 1.8° | 4 | 0.55 | 1 | 0.9 (9.0) | 55 | 280 | 0.7 |
| STN057-2H-766-300S | STN057-2H-766-300D | 0.9° | 3 | 1 | 1.6 | 1.35 (13.5) | 76 | 440 | 1.05 |
| STN057-2N-766-065S | STN057-2N-766-065D | 1.8° | 0.65 | 12.5 | 26 | 1.35 (13.5) | 76 | 440 | 1.05 |
| STN057-2N-766-200S | STN057-2N-766-200D | 1.8° | 2 | 2.2 | 4.5 | 1.35 (13.5) | 76 | 440 | 1.05 |
| STN057-2N-766-300S | STN057-2N-766-300D | 1.8° | 3 | 1.1 | 2.1 | 1.35 (13.5) | 76 | 440 | 1.05 |
● Environmental conditions: -20 ~ +50℃
● Insulation resistance: 100MΩ Min（at DC500V）
● Permissible temperature rise: 80℃ Max（Resistance method）
★ Note: Do not allow the surface temperature of the motor case to exceed 90℃ during operation.
★ Size and electrical parameters can be customized
★ Optional items: Encoder & Brakes can be chosen and installed
2-Phase, Bipolar (4 Leads):
| Model Name | Step Angle | Current | Resistance | Inductance | Holding Torque | Motor Length | Inertia | Mass Weight | |
| Single Shaft | Dual Shaft | Deg. | A/Phase | Ω / phase | mH / Phase | N.cm (kgf.cm) | mm | X10-7Kg.m2 | kg |
| STN057-2N-414-140S | STN057-2N-414-140D | 1.8° | 1.4 | 2.56 | 5.6 | 0.55 (5.5) | 41 | 150 | 0.47 |
| STN057-2N-414-200S | STN057-2N-414-200D | 1.8° | 2 | 1 | 2 | 0.55 (5.5) | 41 | 150 | 0.47 |
| STN057-2H-544-300S | STN057-2H-544-300D | 0.9° | 3 | 0.8 | 3.5 | 1.27 (12.7) | 54 | 280 | 0.7 |
| STN057-2N-554-100S | STN057-2N-554-100D | 1.8° | 1 | 6.2 | 21 | 1.27 (12.7) | 55 | 280 | 0.7 |
| STN057-2N-554-200S | STN057-2N-554-200D | 1.8° | 2 | 1.38 | 5 | 1.27 (12.7) | 55 | 280 | 0.7 |
| STN057-2H-764-300S | STN057-2H-764-300D | 0.9° | 3 | 1 | 4.3 | 1.9 (19) | 76 | 440 | 1.05 |
| STN057-2H-764-420S | STN057-2H-764-420D | 0.9° | 4.2 | 0.72 | 1.8 | 1.9 (19) | 76 | 440 | 1.05 |
| STN057-2N-764-100S | STN057-2N-764-100D | 1.8° | 1 | 9 | 35 | 1.9 (19) | 76 | 440 | 1.05 |
| STN057-2N-764-200S | STN057-2N-764-200D | 1.8° | 2 | 2 | 8 | 1.9 (19) | 76 | 440 | 1.05 |
| STN057-2N-764-300S | STN057-2N-764-300D | 1.8° | 3 | 1.2 | 4.8 | 1.9 (19) | 76 | 440 | 1.05 |
● Environmental conditions: -20 ~ +50℃
● Insulation resistance: 100MΩ Min（at DC500V）
● Permissible temperature rise: 80℃ Max（Resistance method）
★ Note: Do not allow the surface temperature of the motor case to exceed 90℃ during operation.
★ Size and electrical parameters can be customized
★ Optional items: Encoder & Brakes can be chosen and installed
▍Wiring Diagram
2-Phase, Unipolar (6 Leads)
2-Phase, Bipolar (4 Leads)
▍Dimension
