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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KM4409MD |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
131.26 oz-in
9.45 kg-cm
0.9 N-m
4.8V
120.15 oz-in
8.65 kg-cm
0.8 N-m
Above Average
|
| Speed |
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
4.8V
0.13 sec/60°
461.5 deg/s
76.9 RPM
Average
|
| Physical | |
| Weight | 1.50 oz42.7 gBottom 10% |
| Dimensions |
L 1.61 in W 0.80 in H 1.16 in L 40.9 mm W 20.3 mm H 29.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Water Rating | None |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 265 mm10.43 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 | Above Average Stronger than 86% of 262 Digital Mini servos at 4.8V |
| Speed | Average Faster than 39% of 263 Digital Mini servos at 4.8V |
| Weight | Bottom 10% Lighter than 7% of 466 Digital Mini servos |
Performance Analysis
| Shaft Power | 1.71–2.21 W |
| Power Density | 1.477 W/in³ More power-dense than 45% of 440 Digital Mini servos |
| Torque Density | 2.8171 oz-in/g Stronger than 65% of 258 Digital Mini servos |
| Torque-to-Volume Ratio | 80.42 oz-in/in³ Denser torque than 51% of 262 Digital Mini servos |
| Speed-to-Weight | 0.18036 (1/sec·g) Faster than 10% of 259 Digital Mini servos |
| Speed-Torque Trade-off | 15.62 Better balanced than 86% of 261 Digital Mini servos |
| Torque Gain per Volt | 7.71%/V More voltage-responsive (torque) than 2% of 232 Digital Mini servos |
| Speed Gain per Volt | 15.17%/V More voltage-responsive (speed) than 41% of 235 Digital Mini servos |
| Voltage Range Width | 1.2 V Wider voltage range than 7% of 351 Digital Mini servos |
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