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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | ST3025 Servo |
| Category | Robotics |
| Performance | |
| Torque |
12.0V555.50 oz-in40.00 kg-cm3.9 N-m |
| Speed |
12.0V0.12 sec/60°512.8 deg/s85.5 RPM |
| Stall Current | ≤4.4 A≤4400 mABelow Average |
| Physical | |
| Weight | 4.37 oz124.0 gBottom 10% |
| Shape | Boxed |
| Dimensions |
L 1.575 in W 0.787 in H 1.575 in L 40.0 mm W 20.0 mm H 40.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Rotation Mode | Multi-turn |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 360° |
| Mechanical Limit | No Limit |
| Angle Sensor | Magnetic Encoder |
| Control System | TTL |
| Programmable | Yes |
| Resolution | 4,096 pulse/rev |
| Operating Modes | Position, Velocity, Step |
| Electrical & Environment | |
| Operating Voltage | 6–12.6 V |
| Idle Current | 0.380 A380 mA |
| Connectivity | |
| Baud Rate | 38.4 Kbps–1 Mbps |
| Origin | |
| Country of Origin | China |
Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.
Class Comparison
| Weight | Bottom 10% Lighter than 0% of 1880 Digital Standard servos |
| Stall Current | Below Average Lower draw than 31% of 570 Digital Standard servos |
Performance Analysis
| Torque Density | 4.4798 oz-in/g |
| Torque-to-Volume Ratio | 284.54 oz-in/in³ |
| Speed-to-Weight | 0.06893 (1/sec·g) |
| Speed-Torque Trade-off | 65.00 |
| Current-per-Torque Ratio | 0.0079 A/oz-in |
| Voltage Range Width | 6.6 V Wider voltage range than 98% of 1560 Digital Standard servos |
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