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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | XQ-S2221F |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
305.00 oz-in
21.96 kg-cm
2.2 N-m
7.4V
249.00 oz-in
17.93 kg-cm
1.8 N-m
6.0V
208.00 oz-in
14.98 kg-cm
1.5 N-m
Top 10%
|
| Speed |
8.4V
0.14 sec/60°
428.6 deg/s
71.4 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
Below Average
|
| Physical | |
| Weight | 1.29 oz36.5 gBelow Average |
| Dimensions |
L 0.472 in W 1.181 in H 1.398 in L 12.0 mm W 30.0 mm H 35.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Water Rating | Splashproof |
| Connectivity | |
| Connector | JR (Universal) estimate |
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 | Top 10% Stronger than 97% of 262 Digital Mini servos at 6.0V |
| Speed | Below Average Faster than 33% of 263 Digital Mini servos at 6.0V |
| Weight | Below Average Lighter than 13% of 466 Digital Mini servos |
Performance Analysis
| Shaft Power | 2.75–4.03 W |
| Power Density | 5.169 W/in³ More power-dense than 86% of 440 Digital Mini servos |
| Torque Density | 5.6986 oz-in/g Stronger than 97% of 258 Digital Mini servos |
| Torque-to-Volume Ratio | 266.91 oz-in/in³ 3rd-highest torque-to-volume ratio of 262 Digital Mini servos |
| Speed-to-Weight | 0.19570 (1/sec·g) Faster than 14% of 259 Digital Mini servos |
| Speed-Torque Trade-off | 29.12 Better balanced than 98% of 261 Digital Mini servos |
| Torque Gain per Volt | 19.43%/V More voltage-responsive (torque) than 69% of 232 Digital Mini servos |
| Speed Gain per Volt | 0.00%/V More voltage-responsive (speed) than 2% of 235 Digital Mini servos |
| Voltage Range Width | 2.4 V Wider voltage range than 58% of 351 Digital Mini servos |
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