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Technical Specifications
Last Updated: 2026-10-09
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-0408 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
347.00 oz-in
24.99 kg-cm
2.5 N-m
7.4V
305.36 oz-in
21.99 kg-cm
2.2 N-m
6.0V
249.84 oz-in
17.99 kg-cm
1.8 N-m
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
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
|
| Physical | |
| Weight | 2.54 oz72.0 gBelow Average |
| Dimensions |
L 1.575 in W 0.787 in H 1.575 in L 40.0 mm W 20.0 mm H 40.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | 6 |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–65 °C14–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
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 56% of 1043 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 83% of 1041 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 28% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 5.13–9.17 W |
| Power Density | 4.694 W/in³ More power-dense than 76% of 1759 Digital Standard servos |
| Torque Density | 3.4700 oz-in/g Stronger than 50% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 127.94 oz-in/in³ Denser torque than 56% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.15432 (1/sec·g) Faster than 73% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 22.48 Better balanced than 40% of 1031 Digital Standard servos |
| Torque Gain per Volt | 16.20%/V More voltage-responsive (torque) than 55% of 850 Digital Standard servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 29% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 58% of 1539 Digital Standard servos |
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