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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KM1850MD |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
26.39 oz-in
1.90 kg-cm
0.2 N-m
5.0V
69.45 oz-in
5.00 kg-cm
0.5 N-m
Above Average
|
| Speed |
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
|
| Stall Current | ≤1.6 A≤1600 mABelow Average |
| Physical | |
| Weight | 0.63 oz18.0 gBelow Average |
| Dimensions |
L 1.024 in W 0.551 in H 0.89 in L 26.0 mm W 14.0 mm H 22.6 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Metal |
| Gear Spline/Teeth | 21 T |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 126° |
| Mechanical Limit | 180° |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 5–6 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 | Above Average Stronger than 89% of 349 Digital Micro servos at 5.0V |
| Speed | Below Average Faster than 22% of 347 Digital Micro servos at 5.0V |
| Weight | Below Average Lighter than 20% of 597 Digital Micro servos |
| Stall Current | Below Average Lower draw than 26% of 188 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.41–0.92 W |
| Power Density | 1.827 W/in³ More power-dense than 49% of 563 Digital Micro servos |
| Torque Density | 3.8583 oz-in/g Stronger than 86% of 349 Digital Micro servos |
| Torque-to-Volume Ratio | 138.30 oz-in/in³ Denser torque than 83% of 345 Digital Micro servos |
| Speed-to-Weight | 0.39683 (1/sec·g) Faster than 9% of 347 Digital Micro servos |
| Speed-Torque Trade-off | 9.72 Better balanced than 90% of 345 Digital Micro servos |
| Current-per-Torque Ratio | 0.0230 A/oz-in More efficient than 85% of 98 Digital Micro servos |
| Torque Gain per Volt | -62.00%/V More voltage-responsive (torque) than 0% of 290 Digital Micro servos |
| Speed Gain per Volt | 16.66%/V More voltage-responsive (speed) than 37% of 295 Digital Micro servos |
| Voltage Range Width | 1.0 V Wider voltage range than 4% of 496 Digital Micro servos |
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