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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
Below 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
|
| Physical | |
| Weight | 1.69 oz48.0 gAbove Average |
| 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 | Below Average Stronger than 34% of 186 Digital Low Profile servos at 6.0V |
| Speed | Above Average Faster than 86% of 183 Digital Low Profile servos at 6.0V |
| Weight | Above Average Lighter than 69% of 304 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 273 Digital Low Profile servos |
| Torque Density | 2.6044 oz-in/g Stronger than 38% of 185 Digital Low Profile servos |
| Torque-to-Volume Ratio | 94.72 oz-in/in³ Denser torque than 35% of 186 Digital Low Profile servos |
| Speed-to-Weight | 0.29762 (1/sec·g) Faster than 93% of 182 Digital Low Profile servos |
| Speed-Torque Trade-off | 8.75 Better balanced than 17% of 183 Digital Low Profile servos |
| Voltage Range Width | 2.4 V Wider voltage range than 45% of 276 Digital Low Profile servos |
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Reviews (16)
Includes 16 reviews aggregated from around the web.
There are few reviews for this servo on the web, with 13 product reviews at one retailer. Users call it fast and precise for on-road racing and drift, but note it is more expensive and narrower in use.
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