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Technical Specifications
Last Updated: 2026-10-27| Identity | |
| Brand |  |
| Product Number | CYS-S2220 |
| 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
0.100 A
100 mA
Above Average
|
| Stall Current | 2.5–2.8 A2500–2800 mAAbove Average |
| Physical | |
| Weight | 2.26 oz64.0 gAverage |
| Dimensions |
L 1.579 in W 0.791 in H 1.528 in L 40.1 mm W 20.1 mm H 38.8 mm |
| Case Material | Plastic / Aluminum |
| 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 |
| Water Rating | IP65 |
| Idle Current | 0.020 A20 mA |
| Connectivity | |
| Connector | Futaba | JR |
| 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 | Average Lighter than 47% of 1872 Digital Standard servos |
| Running Current | Above Average Lower draw than 89% of 226 Digital Standard servos at 6.0V |
| Stall Current | Above Average Lower draw than 67% of 569 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.89–3.67 W |
| Power Density | 1.922 W/in³ More power-dense than 42% of 1762 Digital Standard servos |
| Torque Density | 3.9058 oz-in/g Stronger than 59% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 130.98 oz-in/in³ Denser torque than 58% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.09766 (1/sec·g) Faster than 34% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 40.00 Better balanced than 64% of 1029 Digital Standard servos |
| Current-per-Torque Ratio | 0.0112 A/oz-in More efficient than 71% of 330 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.200 Lower idle draw than 17% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 28.00 Narrower current spread than 33% 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 35% of 1552 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0020 Finer dead band than 34% of 501 Digital Standard servos |
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Reviews (2)
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Authentic RC - Jeff McGraw
October 18, 2016Application(s): Axail Wraith Steering servo front for crawler. mounted with 2 or 3 inch arm and used to dump the bed of a Tonka truck.
Comments: I have used and abused this servo over the years off and on and I was never in a situation where I needed more. I will mention that most need a BEC to run without brownouts. VERY WELL MADE AND AM TESTING THIS THROUGH ASIATEES.COM DISCOUNTED ITEM BUT WILL PURCHASE AGAIN ANY DAY, I JUST HAVEN'T NEEDED TO. thanks CYS
Joe Conti
September 11, 2016Application(s): 1 as an RC crawler steering servo 1 as an RC car servo winch
Comments: I find them very affordable and attractive when I read they have titanium gears - however, sadly, only yesterday one of them lost it's gearing :( Steering servo only working to one side. Will not return to center from one side!! Very unexpected!!