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STN028 Series
● 2-Phase Hybrid Stepper Motor
● Step Angle: 1.8°
● Standard NEMA 11 Dimensions, 28x28mm
● 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 |
| STN028-2N-336-095S | STN028-2N-336-095D | 1.8° | 0.95 | 2.8 | 1 | 5 (0.5) | 33 | 8 | 0.15 |
| STN028-2N-506-095S | STN028-2N-506-095D | 1.8° | 0.95 | 4.6 | 1.9 | 9 (0.9) | 50 | 18 | 0.25 |
● 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 |
| STN028-2N-334-110S | STN028-2N-334-110D | 1.8° | 1.5 | 1.5 | 1 | 7.2 (0.72) | 33 | 8 | 0.15 |
| STN028-2N-504-240S | STN028-2N-504-240D | 1.8° | 1.5 | 2 | 1.6 | 11 (1.1) | 50 | 18 | 0.25 |
● 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
