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Technical Specifications
Last Updated: 2026-11-04
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-WT120 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
694.50 oz-in
50.01 kg-cm
4.9 N-m
7.4V
583.38 oz-in
42.01 kg-cm
4.1 N-m
6.0V
500.04 oz-in
36.01 kg-cm
3.5 N-m
Top 10%
|
| Speed |
8.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
7.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
Below Average
|
| Physical | |
| Weight | 4.23 oz120.0 gBottom 10% |
| Dimensions |
L 1.61 in W 0.79 in H 1.14 in L 40.9 mm W 20.1 mm H 29.0 mm |
| Case Material | Brass |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| 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 | IP67 |
| 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 96% of 186 Digital Low Profile servos at 6.0V |
| Speed | Below Average Faster than 34% of 183 Digital Low Profile servos at 6.0V |
| Weight | Bottom 10% Lighter than 0% of 304 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 8.41–16.05 W |
| Power Density | 11.070 W/in³ More power-dense than 95% of 273 Digital Low Profile servos |
| Torque Density | 4.1670 oz-in/g Stronger than 82% of 185 Digital Low Profile servos |
| Torque-to-Volume Ratio | 344.86 oz-in/in³ Denser torque than 97% of 186 Digital Low Profile servos |
| Speed-to-Weight | 0.07576 (1/sec·g) Faster than 2% of 182 Digital Low Profile servos |
| Speed-Torque Trade-off | 55.00 Better balanced than 97% of 183 Digital Low Profile servos |
| Torque Gain per Volt | 16.20%/V More voltage-responsive (torque) than 48% of 164 Digital Low Profile servos |
| Speed Gain per Volt | 15.62%/V More voltage-responsive (speed) than 54% of 163 Digital Low Profile servos |
| Voltage Range Width | 2.4 V Wider voltage range than 46% of 276 Digital Low Profile servos |
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