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Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KM0940MD |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
18.06 oz-in
1.30 kg-cm
0.1 N-m
7.4V
63.89 oz-in
4.60 kg-cm
0.5 N-m
6.0V
11.11 oz-in
0.80 kg-cm
0.1 N-m
5.0V
6.95 oz-in
0.50 kg-cm
0.0 N-m
Bottom 10%
|
| Speed |
8.4V
0.10 sec/60°
600.0 deg/s
100.0 RPM
7.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
6.0V
0.12 sec/60°
500.0 deg/s
83.3 RPM
5.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
Below Average
|
| Physical | |
| Weight | 0.46 oz13.0 gTop 10% |
| Dimensions |
L 0.92 in W 0.45 in H 0.84 in L 23.4 mm W 11.4 mm H 21.3 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Aluminum |
| Gear Spline/Teeth | 21 T |
| Rotation Mode | Positional |
| Rotation/Support | Bushing |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Mechanical Limit | 180° |
| Neutral Position | 1520 µs |
| Dead Band | 4 µs |
| Refresh Rate | 330 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 5–8.4 V |
| Power Source | DC |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | None |
| 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 0% of 290 Digital Mini servos at 5.0V |
| Speed | Below Average Faster than 30% of 293 Digital Mini servos at 5.0V |
| Weight | Top 10% Lighter than 97% of 505 Digital Mini servos |
Performance Analysis
| Shaft Power | 0.09–1.07 W |
| Power Density | 3.088 W/in³ More power-dense than 71% of 482 Digital Mini servos |
| Torque Density | 0.5346 oz-in/g Stronger than 0% of 286 Digital Mini servos |
| Torque-to-Volume Ratio | 19.99 oz-in/in³ Denser torque than 0% of 288 Digital Mini servos |
| Speed-to-Weight | 0.54945 (1/sec·g) Faster than 84% of 289 Digital Mini servos |
| Speed-Torque Trade-off | 0.97 Better balanced than 0% of 288 Digital Mini servos |
| Torque Gain per Volt | 47.02%/V More voltage-responsive (torque) than 98% of 257 Digital Mini servos |
| Speed Gain per Volt | 11.76%/V More voltage-responsive (speed) than 19% of 262 Digital Mini servos |
| Voltage Range Width | 3.4 V Wider voltage range than 71% of 405 Digital Mini servos |
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Reviews (7)
Includes 7 reviews aggregated from around the web.
Owners are positive. A retailer shows 7 reviews: 6 five-star and 1 three-star. Reviewers call it a great, strong little servo for small to medium electric models with nice gear tightness and good performance for the price. The lower rating came from a pilot who flew once before an unrelated structural failure, and who found the supplied arms flimsy.
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