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Technical Specifications
Last Updated: 2026-10-10
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
Average
|
| Speed |
8.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
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
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
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
Below Average
|
| Physical | |
| Weight | 7.05 oz200.0 gAbove Average |
| 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 | Metal |
| 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 | Average Stronger than 36% of 54 Custom servos at 6.0V |
| Speed | Below Average Faster than 22% of 64 Custom servos at 6.0V |
| Weight | Above Average Lighter than 87% of 31 Digital Custom servos |
Performance Analysis
| Shaft Power | 8.41–16.05 W |
| Power Density | 11.070 W/in³ 3rd-highest power density of 109 Power HD servos |
| Torque Density | 2.5002 oz-in/g Stronger than 28% of 82 Power HD servos |
| Torque-to-Volume Ratio | 344.86 oz-in/in³ Denser torque than 91% of 82 Power HD servos |
| Speed-to-Weight | 0.04545 (1/sec·g) Faster than 5% of 82 Power HD servos |
| Speed-Torque Trade-off | 55.00 Better balanced than 81% of 82 Power HD servos |
| Torque Gain per Volt | 16.20%/V More voltage-responsive (torque) than 46% of 75 Power HD servos |
| Speed Gain per Volt | 15.62%/V More voltage-responsive (speed) than 47% of 75 Power HD servos |
| Voltage Range Width | 2.4 V Wider voltage range than 43% of 31 Digital Custom servos |
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