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Technical Specifications
Last Updated: 2026-09-14
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Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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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
|
| 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
6.0V
0.07 sec/60°
857.1 deg/s
142.9 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 1.69 oz48.0 g |
| Dimensions |
L 1.61 in W 0.79 in H 1.04 in L 41.0 mm W 20.0 mm H 26.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Titanium / Aluminum |
| Gear Spline/Teeth | 25 T estimate |
| Shaft Size | (add) |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | 120° |
| Mechanical Limit | (add) |
| Pulse Cycle | 3 ms |
| Pulse Width | (add) |
| Neutral Position | 1520 µs |
| Dead Band | (add) |
| Refresh Rate | 333 Hz |
| Angle Sensor | (add) |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | (add) |
| 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 |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | (add) |
| 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.
Performance Analysis
| Shaft Power | 3.30–5.14 W |
| Torque Density | 2.6044 oz-in/g Stronger than 47% of the 96 Digital Low Profile servos in the database |
| Torque-to-Volume Ratio | 94.72 oz-in/in³ Denser torque than 46% of the 96 Digital Low Profile servos in the database |
| Power Density | 3.892 W/in³ More power-dense than 59% of the 188 Digital Low Profile servos in the database |
| Speed-to-Weight | 0.29762 (1/sec·g) Faster than 89% of the 96 Digital Low Profile servos in the database |
| Speed-Torque Trade-off | 8.75 Better balanced than 20% of the 94 Digital Low Profile servos in the database |
| Voltage Range Width | 2.4 V Wider voltage range than 43% of the 165 Digital Low Profile servos in the database |
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