Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-10-27
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KM3811DHV |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
55.56 oz-in
4.00 kg-cm
0.4 N-m
7.4V
51.39 oz-in
3.70 kg-cm
0.4 N-m
6.0V
44.45 oz-in
3.20 kg-cm
0.3 N-m
5.0V
38.89 oz-in
2.80 kg-cm
0.3 N-m
Bottom 10%
|
| Speed |
8.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
7.4V
0.13 sec/60°
461.5 deg/s
76.9 RPM
6.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
5.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
Below Average
|
| Stall Current | ≤2.8 A≤2800 mAAbove Average |
| Physical | |
| Weight | 1.34 oz38.0 gTop 10% |
| Dimensions |
L 1.594 in W 0.799 in H 1.437 in L 40.5 mm W 20.3 mm H 36.5 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Plastic |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 63° |
| Mechanical Limit | 126° |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 5–8.4 V |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | Waterproof |
| Idle Current | 0.010 A10 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | China |
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 | Bottom 10% Stronger than 1% of 1060 Digital Standard servos at 5.0V |
| Speed | Below Average Faster than 31% of 1045 Digital Standard servos at 5.0V |
| Weight | Top 10% Lighter than 96% of 1880 Digital Standard servos |
| Stall Current | Above Average Lower draw than 66% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 0.45–0.86 W |
| Power Density | 0.468 W/in³ More power-dense than 3% of 1768 Digital Standard servos |
| Torque Density | 1.0234 oz-in/g Stronger than 4% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 21.25 oz-in/in³ Denser torque than 1% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.16447 (1/sec·g) Faster than 79% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 6.22 Better balanced than 7% of 1034 Digital Standard servos |
| Current-per-Torque Ratio | 0.0720 A/oz-in More efficient than 1% of 331 Digital Standard servos |
| Torque Gain per Volt | 12.61%/V More voltage-responsive (torque) than 31% of 873 Digital Standard servos |
| Speed Gain per Volt | 9.80%/V More voltage-responsive (speed) than 15% of 874 Digital Standard servos |
| Voltage Range Width | 3.4 V Wider voltage range than 72% of 1560 Digital Standard servos |
Similar Active Servos
Reviews of KingMax Hobby KM3811DHV
Be the first to review!