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Technical Specifications
Last Updated: 2026-10-22| Identity | |
| Brand |  |
| Product Number | KST-0012 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
73.56 oz-in
5.30 kg-cm
0.5 N-m
7.4V
67.32 oz-in
4.85 kg-cm
0.5 N-m
6.0V
53.44 oz-in
3.85 kg-cm
0.4 N-m
3.8V
33.31 oz-in
2.40 kg-cm
0.2 N-m
Average
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
3.8V
0.18 sec/60°
333.3 deg/s
55.6 RPM
Bottom 10%
|
| Physical | |
| Weight | 0.32 oz9.0 gAbove Average |
| Dimensions |
L 0.925 in W 0.315 in H 0.661 in L 23.5 mm W 8.0 mm H 16.8 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 3.8–8.4 V |
| Power Source | DC |
| Temperature | -10–65 °C14–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 205 mm8.07 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 | Average Stronger than 63% of 349 Digital Micro servos at 3.8V |
| Speed | Bottom 10% Faster than 7% of 347 Digital Micro servos at 3.8V |
| Weight | Above Average Lighter than 66% of 597 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.34–1.51 W |
| Power Density | 7.840 W/in³ More power-dense than 92% of 563 Digital Micro servos |
| Torque Density | 3.7011 oz-in/g Stronger than 85% of 349 Digital Micro servos |
| Torque-to-Volume Ratio | 172.81 oz-in/in³ Denser torque than 89% of 345 Digital Micro servos |
| Speed-to-Weight | 0.61728 (1/sec·g) Faster than 36% of 347 Digital Micro servos |
| Speed-Torque Trade-off | 6.00 Better balanced than 78% of 345 Digital Micro servos |
| Torque Gain per Volt | 26.27%/V More voltage-responsive (torque) than 88% of 290 Digital Micro servos |
| Speed Gain per Volt | 21.75%/V More voltage-responsive (speed) than 73% of 295 Digital Micro servos |
| Voltage Range Width | 4.6 V Wider voltage range than 93% of 496 Digital Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0017 Finer dead band than 44% of 182 Digital Micro servos |
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Reviews (7)
Includes 7 reviews aggregated from around the web.
There are few reviews for this servo on the web, all from glider pilots and all positive. Pilots use it for aileron and flap duty in F5J and F3F-style gliders and report no problems, including a pilot who flies it on big flaps in lightweight F5J models, and one who was pleased the V2 revision improved the gearbox. One caution from a build thread is that KST does not offer replaceable gear sets for these small servos.
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