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Technical Specifications
Last Updated: 2026-09-16
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Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | ST-3215-C018 |
| Category | Robotics |
| Performance | |
| Torque |
12.0V417.35 oz-in30.05 kg-cm2.9 N-m |
| Speed |
12.0V0.22 sec/60°270.3 deg/s45.0 RPM |
| Running Current |
12.0V0.180 A180 mA |
| Stall Current | ≤2.7 A≤2700 mA |
| Rated Output Power | (add) |
| Radial Load | (add) |
| Physical | |
| Weight | 1.94 oz55.0 g |
| Shape | Boxed |
| Dimensions |
L 1.78 in W 0.97 in H 1.38 in L 45.2 mm W 24.7 mm H 35.0 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Cored |
| Motor Drive | (add) |
| Gears | Copper |
| Gear Ratio | 345.001:1 |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 5.9 mm |
| Rotation Mode | (add) |
| Rotation/Support | Single Bearing |
| Backlash | 0.500° |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 360° |
| Mechanical Limit | No Limit |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | (add) |
| Dead Band | (add) |
| Refresh Rate | 1000 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | Serial-PID |
| Programmable | Yes |
| Resolution | (add) |
| MCU | (add) |
| Operating Modes | Position, Velocity, Step |
| Signal Voltage | 2-5V |
| Electrical & Environment | |
| Operating Voltage | 4–14 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | None |
| Certification | (add) |
| Idle Current | 0.030 A30 mA |
| Connectivity | |
| Connector | Molex |
| Wire Length | 150 mm5.91 in |
| 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.
Performance Analysis
| Shaft Power | 3.48 W |
| Torque Density | 7.5882 oz-in/g |
| Torque-to-Volume Ratio | 175.05 oz-in/in³ |
| Power Density | 1.458 W/in³ More power-dense than 31% of the 1643 Digital Standard servos in the database |
| Speed-to-Weight | 0.08190 (1/sec·g) |
| Speed-Torque Trade-off | 92.64 |
| Current-per-Torque Ratio | 0.0065 A/oz-in |
| Idle-to-Running Current Ratio | 0.167 |
| No-Load vs Stall Current Spread | 15.00 |
| Voltage Range Width | 10.0 V 5th-highest voltage range width of 1268 Digital Standard servos |
| Backlash-to-Range Ratio | 0.00139 Tighter backlash than 64% of the 71 Robotics servos in the database |
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