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Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KM1203MD |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
145.85 oz-in
10.50 kg-cm
1.0 N-m
7.4V
131.96 oz-in
9.50 kg-cm
0.9 N-m
6.0V
102.79 oz-in
7.40 kg-cm
0.7 N-m
5.0V
83.34 oz-in
6.00 kg-cm
0.6 N-m
Above Average
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
7.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
5.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
Below Average
|
| Physical | |
| Weight | 0.72 oz20.3 gAbove Average |
| Dimensions |
L 0.91 in W 0.47 in H 1.07 in L 23.1 mm W 11.9 mm H 27.2 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Pulse Cycle | 3.03 ms |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Angle Sensor | Potentiometer |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 5–8.4 V |
| Power Source | DC |
| Water Rating | None |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 320 mm12.6 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 76% of 290 Digital Mini servos at 5.0V |
| Speed | Below Average Faster than 30% of 293 Digital Mini servos at 5.0V |
| Weight | Above Average Lighter than 73% of 505 Digital Mini servos |
Performance Analysis
| Shaft Power | 1.10–3.85 W |
| Power Density | 8.418 W/in³ More power-dense than 96% of 482 Digital Mini servos |
| Torque Density | 4.1054 oz-in/g Stronger than 91% of 286 Digital Mini servos |
| Torque-to-Volume Ratio | 182.11 oz-in/in³ Denser torque than 92% of 288 Digital Mini servos |
| Speed-to-Weight | 0.35187 (1/sec·g) Faster than 58% of 289 Digital Mini servos |
| Speed-Torque Trade-off | 11.67 Better balanced than 77% of 288 Digital Mini servos |
| Torque Gain per Volt | 22.06%/V More voltage-responsive (torque) than 85% of 257 Digital Mini servos |
| Speed Gain per Volt | 29.40%/V More voltage-responsive (speed) than 96% of 262 Digital Mini servos |
| Voltage Range Width | 3.4 V Wider voltage range than 70% of 405 Digital Mini servos |
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Reviews (1)
Includes 1 review aggregated from around the web.
There are very few reviews for this servo on the web. One hobby retailer reports they are noticeably noisy, which they describe as normal for the model, and extremely hard to damage with normal use.
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