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STN042-2 Series
● 2-Phase Hybrid Stepper Motor
● Step Angle: 0.9° / 1.8°
● Standard NEMA 17 Dimensions, 42x42mm
● 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 |
| STN042-2N-346-095S | STN042-2N-346-095D | 1.8° | 0.95 | 4.2 | 2.4 | 0.16 (1.6) | 34 | 34 | 0.22 |
| STN042-2N-346-120S | STN042-2N-346-120D | 1.8° | 1.2 | 2.4 | 1.6 | 0.18 (1.8) | 34 | 34 | 0.22 |
| STN042-2N-346-200S | STN042-2N-346-200D | 1.8° | 2 | 0.8 | 0.65 | 0.18 (1.8) | 34 | 34 | 0.22 |
| STN042-2H-406-120S | STN042-2H-406-120D | 0.9° | 1.2 | 3.2 | 4 | 0.26 (2.6) | 40 | 54 | 0.28 |
| STN042-2H-406-200S | STN042-2H-406-200D | 0.9° | 2 | 1.2 | 1.5 | 0.28 (2.8) | 40 | 54 | 0.28 |
| STN042-2N-406-020S | STN042-2N-406-020D | 1.8° | 0.2 | 120 | 80 | 0.26 (2.6) | 40 | 54 | 0.28 |
| STN042-2N-406-120S | STN042-2N-406-120D | 1.8° | 1.2 | 3.3 | 2.6 | 0.26 (2.6) | 40 | 54 | 0.28 |
| STN042-2H-486-120S | STN042-2H-486-120D | 0.9° | 1.2 | 3.3 | 2 | 0.24 (2.4) | 48 | 68 | 0.35 |
| STN042-2H-486-200S | STN042-2H-486-200D | 0.9° | 2 | 1.15 | 0.925 | 0.25 (2.5) | 48 | 68 | 0.35 |
| STN042-2N-486-016S | STN042-2N-486-016D | 1.8° | 0.16 | 148 | 115 | 0.24 (2.4) | 48 | 68 | 0.35 |
| STN042-2N-486-060S | STN042-2N-486-060D | 1.8° | 0.6 | 40 | 32 | 0.26 (2.6) | 48 | 68 | 0.35 |
| STN042-2N-486-120S | STN042-2N-486-120D | 1.8° | 1.2 | 3.3 | 2 | 0.28 (2.8) | 48 | 68 | 0.35 |
| STN042-2N-486-200S | STN042-2N-486-200D | 1.8° | 2 | 1.15 | 0.925 | 0.3 (3.0) | 48 | 68 | 0.35 |
| STN042-2N-606-200S | STN042-2N-606-200D | 1.8° | 2 | 2.9 | 2.5 | 0.41 (4.1) | 60 | 114 | 0.5 |
● 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 |
| STN042-2N-204-100S | STN042-2N-204-100D | 1.8° | 1 | 3.5 | 4.5 | 0.13 (1.3) | 20 | 16 | 0.1 |
| STN042-2H-344-140S | STN042-2H-344-140D | 0.9° | 1.4 | 2.6 | 5 | 0.23 (2.3) | 34 | 34 | 0.22 |
| STN042-2N-344-120S | STN042-2N-344-120D | 1.8° | 1.2 | 3.5 | 3.6 | 0.28 (2.8) | 34 | 34 | 0.22 |
| STN042-2N-404-120S | STN042-2N-404-120D | 1.8° | 1.2 | 4 | 5 | 0.4 (4.0) | 40 | 54 | 0.28 |
| STN042-2N-484-120S | STN042-2N-484-120D | 1.8° | 1.2 | 3.3 | 4.2 | 0.44 (4.4) | 48 | 68 | 0.35 |
| STN042-2N-604-200S | STN042-2N-604-200D | 1.8° | 2 | 1.47 | 2.5 | 0.58 (5.8) | 60 | 114 | 0.5 |
● 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
