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Technical Specifications
Last Updated: 2026-10-09
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
Top 10%
|
| 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 gBelow 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 | Top 10% Stronger than 92% of 328 Digital Micro servos at 5.0V |
| Speed | Below Average Faster than 20% of 328 Digital Micro servos at 5.0V |
| Weight | Below Average Lighter than 11% of 620 Digital Micro servos |
Performance Analysis
| Shaft Power | 1.10–3.85 W |
| Power Density | 8.418 W/in³ More power-dense than 91% of 590 Digital Micro servos |
| Torque Density | 4.1054 oz-in/g Stronger than 89% of 327 Digital Micro servos |
| Torque-to-Volume Ratio | 182.11 oz-in/in³ Denser torque than 91% of 327 Digital Micro servos |
| Speed-to-Weight | 0.35187 (1/sec·g) Faster than 4% of 327 Digital Micro servos |
| Speed-Torque Trade-off | 11.67 Better balanced than 94% of 327 Digital Micro servos |
| Torque Gain per Volt | 22.06%/V More voltage-responsive (torque) than 81% of 268 Digital Micro servos |
| Speed Gain per Volt | 29.40%/V More voltage-responsive (speed) than 95% of 273 Digital Micro servos |
| Voltage Range Width | 3.4 V Wider voltage range than 74% of 511 Digital Micro servos |
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