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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-S50 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
694.40 oz-in
50.00 kg-cm
4.9 N-m
7.4V
624.90 oz-in
45.00 kg-cm
4.4 N-m
6.0V
527.70 oz-in
38.00 kg-cm
3.7 N-m
Top 10%
|
| Speed |
8.4V
0.10 sec/60°
600.0 deg/s
100.0 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
Average
|
| Physical | |
| Weight | 2.65 oz75.0 gBelow Average |
| Dimensions |
L 1.602 in W 0.807 in H 1.52 in L 40.7 mm W 20.5 mm H 38.6 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Titanium / Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1520 µs |
| Refresh Rate | 1500 Hz |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | Water Resistant |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Origin | |
| Country of Origin | Hong Kong |
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 93% of 1060 Digital Standard servos at 6.0V |
| Speed | Average Faster than 42% of 1045 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 22% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 6.50–12.84 W |
| Power Density | 6.534 W/in³ More power-dense than 88% of 1768 Digital Standard servos |
| Torque Density | 7.0360 oz-in/g Stronger than 93% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 268.54 oz-in/in³ Denser torque than 93% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.08889 (1/sec·g) Faster than 23% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 79.16 Better balanced than 92% of 1034 Digital Standard servos |
| Torque Gain per Volt | 13.16%/V More voltage-responsive (torque) than 34% of 873 Digital Standard servos |
| Speed Gain per Volt | 20.83%/V More voltage-responsive (speed) than 82% of 874 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 55% of 1560 Digital Standard servos |
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