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Technical Specifications
Last Updated: 2026-10-14
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | STS3215 |
| Category | Robotics |
| Performance | |
| Torque |
7.4V
271.28 oz-in
19.53 kg-cm
1.9 N-m
6.0V
229.54 oz-in
16.53 kg-cm
1.6 N-m
|
| Speed |
7.4V
0.19 sec/60°
312.5 deg/s
52.1 RPM
6.0V
0.24 sec/60°
252.1 deg/s
42.0 RPM
|
| Running Current |
7.4V
0.650 A
650 mA
6.0V
0.500 A
500 mA
|
| Stall Current | 2–2.7 A2000–2700 mAAbove Average |
| Physical | |
| Weight | 1.94 oz55.0 gAbove Average |
| Shape | Boxed |
| Dimensions |
L 1.78 in W 0.972 in H 1.378 in L 45.2 mm W 24.7 mm H 35.0 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Ratio | 345:1 |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 5.9 mm |
| Rotation Mode | Continuous |
| Rotation/Support | Single Bearing |
| Backlash | 0.870° |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 360° |
| Mechanical Limit | No Limit |
| Angle Sensor | Magnetic Encoder |
| Control System | Serial-PID |
| Programmable | Yes |
| Resolution | 4,096 pulse/rev |
| Operating Modes | Position, Velocity, Step |
| Signal Voltage | 2-5V |
| Electrical & Environment | |
| Operating Voltage | 4–14 V |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | Not Rated |
| Certification | RoHS |
| Idle Current | 0.060 A60 mA |
| Connectivity | |
| Connector | JST |
| 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.
Class Comparison
| Weight | Above Average Lighter than 75% of 1902 Digital Standard servos |
| Stall Current | Above Average Lower draw than 69% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.78–2.61 W |
| Power Density | 1.096 W/in³ More power-dense than 21% of 1759 Digital Standard servos |
| Torque Density | 4.1735 oz-in/g |
| Torque-to-Volume Ratio | 96.28 oz-in/in³ |
| Speed-to-Weight | 0.07639 (1/sec·g) |
| Speed-Torque Trade-off | 54.63 |
| Current-per-Torque Ratio | 0.0118 A/oz-in |
| Idle-to-Running Current Ratio | 0.120 |
| No-Load vs Stall Current Spread | 5.40 |
| Voltage Range Width | 10.0 V Wider voltage range than 100% of 1539 Digital Standard servos |
| Backlash-to-Range Ratio | 0.00242 5th-highest backlash-to-range ratio of 23 Digital Standard servos |
Notes
Feetech sells the STS3215 under multiple sub-model codes (C001 for 7.4V/19kg, C018 and C047 for 12V/30kg) sharing identical mechanical housings but different metal gear materials.
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