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Technical Specifications
Last Updated: 2026-10-27
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | CYS-S2820 |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
277.75 oz-in
20.00 kg-cm
2.0 N-m
6.0V
249.97 oz-in
18.00 kg-cm
1.8 N-m
Average
|
| Speed |
7.4V
0.14 sec/60°
428.6 deg/s
71.4 RPM
6.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
Average
|
| Running Current |
7.4V
0.150 A
150 mA
6.0V
0.120 A
120 mA
Above Average
|
| Stall Current | 2.8–3 A2800–3000 mAAverage |
| Physical | |
| Weight | 2.89 oz82.0 gBottom 10% |
| Dimensions |
L 1.575 in W 0.787 in H 1.63 in L 40.0 mm W 20.0 mm H 41.4 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Titanium |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 90° |
| Pulse Cycle | 20 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 6–7.4 V |
| Temperature | -10–50 °C14–122 °F |
| Idle Current | 0.020 A20 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 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 | Average Stronger than 58% of 1055 Digital Standard servos at 6.0V |
| Speed | Average Faster than 36% of 1038 Digital Standard servos at 6.0V |
| Weight | Bottom 10% Lighter than 8% of 1872 Digital Standard servos |
| Running Current | Above Average Lower draw than 79% of 226 Digital Standard servos at 6.0V |
| Stall Current | Average Lower draw than 59% of 569 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.89–3.67 W |
| Power Density | 1.816 W/in³ More power-dense than 39% of 1762 Digital Standard servos |
| Torque Density | 3.0484 oz-in/g Stronger than 43% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 123.72 oz-in/in³ Denser torque than 54% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.07622 (1/sec·g) Faster than 11% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 40.00 Better balanced than 64% of 1029 Digital Standard servos |
| Current-per-Torque Ratio | 0.0120 A/oz-in More efficient than 66% of 330 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.167 Lower idle draw than 25% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 25.00 Narrower current spread than 39% of 179 Digital Standard servos |
| Torque Gain per Volt | 7.94%/V More voltage-responsive (torque) than 11% of 868 Digital Standard servos |
| Speed Gain per Volt | 10.21%/V More voltage-responsive (speed) than 18% of 868 Digital Standard servos |
| Voltage Range Width | 1.4 V Wider voltage range than 34% of 1552 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 33% of 501 Digital Standard servos |
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