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Technical Specifications
Last Updated: 2026-10-09
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 | 380.000 A380,000 mA |
| Connectivity | |
| Baud Rate | 38.4 Kbps–1 Mbps |
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 8% of 143 Digital Large servos |
| Stall Current | Below Average Lower draw than 29% of 97 Digital Large 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 87% of 131 Digital Large servos |
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