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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | CYS-S3120 |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
55.56 oz-in
4.00 kg-cm
0.4 N-m
6.0V
41.67 oz-in
3.00 kg-cm
0.3 N-m
Below Average
|
| Speed |
7.4V
0.06 sec/60°
1,000.0 deg/s
166.7 RPM
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
Above Average
|
| Running Current |
7.4V
0.055 A
55 mA
6.0V
0.050 A
50 mA
Top 10%
|
| Stall Current | 1.5–1.8 A1500–1800 mAAverage |
| Physical | |
| Weight | 0.71 oz20.0 gAbove Average |
| Dimensions |
L 0.905 in W 0.472 in H 1.146 in L 23.0 mm W 12.0 mm H 29.1 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 21 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 90° |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 4 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–7.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Idle Current | 0.020 A20 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 180 mm7.09 in |
| 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
| Torque | Below Average Stronger than 27% of 262 Digital Mini servos at 6.0V |
| Speed | Above Average Faster than 83% of 263 Digital Mini servos at 6.0V |
| Weight | Above Average Lighter than 73% of 466 Digital Mini servos |
| Running Current | Top 10% Lower draw than 100% of 28 Digital Mini servos at 6.0V |
| Stall Current | Average Lower draw than 52% of 76 Digital Mini servos |
Performance Analysis
| Shaft Power | 0.96–1.71 W |
| Power Density | 3.498 W/in³ More power-dense than 77% of 440 Digital Mini servos |
| Torque Density | 2.0835 oz-in/g Stronger than 36% of 258 Digital Mini servos |
| Torque-to-Volume Ratio | 85.12 oz-in/in³ Denser torque than 56% of 262 Digital Mini servos |
| Speed-to-Weight | 0.62500 (1/sec·g) Faster than 91% of 259 Digital Mini servos |
| Speed-Torque Trade-off | 3.33 Better balanced than 17% of 261 Digital Mini servos |
| Current-per-Torque Ratio | 0.0432 A/oz-in More efficient than 20% of 52 Digital Mini servos |
| Idle-to-Running Current Ratio | 0.400 Lower idle draw than 7% of 44 Cys servos |
| No-Load vs Stall Current Spread | 36.00 Narrower current spread than 26% of 44 Cys servos |
| Torque Gain per Volt | 23.81%/V More voltage-responsive (torque) than 91% of 232 Digital Mini servos |
| Speed Gain per Volt | 23.81%/V More voltage-responsive (speed) than 91% of 235 Digital Mini servos |
| Voltage Range Width | 1.4 V Wider voltage range than 42% of 351 Digital Mini servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0040 Finer dead band than 4% of 77 Digital Mini servos |
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