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Technical Specifications
Last Updated: 2026-10-08
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-X08 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
38.87 oz-in
2.80 kg-cm
0.3 N-m
6.0V
30.53 oz-in
2.20 kg-cm
0.2 N-m
3.8V
19.43 oz-in
1.40 kg-cm
0.1 N-m
Below Average
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 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 | 0.28 oz8.0 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 |
| Motor Drive | FET |
| Gears | Aluminum |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Cycle | 3 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 3.8–8.4 V |
| Connectivity | |
| Connector | JR (Universal) |
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 | Below Average Stronger than 25% of 328 Digital Micro servos at 3.8V |
| Speed | Bottom 10% Faster than 7% of 328 Digital Micro servos at 3.8V |
| Weight | Above Average Lighter than 69% of 620 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.20–0.80 W |
| Power Density | 4.143 W/in³ More power-dense than 71% of 590 Digital Micro servos |
| Torque Density | 2.4288 oz-in/g Stronger than 50% of 327 Digital Micro servos |
| Torque-to-Volume Ratio | 100.80 oz-in/in³ Denser torque than 72% of 327 Digital Micro servos |
| Speed-to-Weight | 0.69444 (1/sec·g) Faster than 44% of 327 Digital Micro servos |
| Speed-Torque Trade-off | 3.50 Better balanced than 59% of 327 Digital Micro servos |
| Torque Gain per Volt | 21.75%/V More voltage-responsive (torque) than 79% of 268 Digital Micro servos |
| Speed Gain per Volt | 21.75%/V More voltage-responsive (speed) than 73% of 273 Digital Micro servos |
| Voltage Range Width | 4.6 V Wider voltage range than 94% of 511 Digital Micro servos |
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