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Technical Specifications
Last Updated: 2026-09-14
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-R12S |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
166.68 oz-in
12.00 kg-cm
1.2 N-m
6.0V
125.01 oz-in
9.00 kg-cm
0.9 N-m
Average
|
| Speed |
7.4V
0.06 sec/60°
1,000.0 deg/s
166.7 RPM
6.0V
0.07 sec/60°
857.1 deg/s
142.9 RPM
Above Average
6.0V
0.07 sec/60°
857.1 deg/s
142.9 RPM
Above Average
|
| Physical | |
| Weight | 1.69 oz48.0 gAverage |
| Dimensions |
L 1.614 in W 0.787 in H 1.039 in L 41.0 mm W 20.0 mm H 26.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Titanium / Aluminum |
| Gear Spline/Teeth | 25 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Cycle | 3 ms |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Power Source | 2S LiPo |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | Water Resistant |
| Certification | RoHS |
| 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 38% of 136 Digital Low Profile servos at 6.0V |
| Speed | Above Average Faster than 82% of 135 Digital Low Profile servos at 6.0V |
| Weight | Average Lighter than 64% of 251 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 3.30–5.14 W |
| Power Density | 3.892 W/in³ More power-dense than 54% of 215 Digital Low Profile servos |
| Torque Density | 2.6044 oz-in/g Stronger than 43% of 136 Digital Low Profile servos |
| Torque-to-Volume Ratio | 94.72 oz-in/in³ Denser torque than 39% of 136 Digital Low Profile servos |
| Speed-to-Weight | 0.29762 (1/sec·g) Faster than 92% of 135 Digital Low Profile servos |
| Speed-Torque Trade-off | 8.75 Better balanced than 21% of 134 Digital Low Profile servos |
| Voltage Range Width | 2.4 V Wider voltage range than 43% of 223 Digital Low Profile servos |
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