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Technical Specifications
Last Updated: 2026-10-08
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-0423 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
1,138.16 oz-in
81.96 kg-cm
8.0 N-m
7.4V
1,041.00 oz-in
74.96 kg-cm
7.4 N-m
6.0V
902.20 oz-in
64.97 kg-cm
6.4 N-m
Top 10%
|
| Speed |
8.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
Average
|
| Stall Current | 8.8–12.3 A8800–12300 mABottom 10% |
| Physical | |
| Weight | 2.47 oz70.0 gBelow Average |
| Dimensions |
L 1.591 in W 0.787 in H 1.496 in L 40.4 mm W 20.0 mm H 38.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 3.3-5V |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -20–65 °C-4–149 °F |
| Water Rating | IP65 |
| 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 | Top 10% Stronger than 100% of 1043 Digital Standard servos at 6.0V |
| Speed | Average Faster than 48% of 1041 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 34% of 1902 Digital Standard servos |
| Stall Current | Bottom 10% Lower draw than 1% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 11.92–19.13 W |
| Power Density | 10.213 W/in³ More power-dense than 98% of 1759 Digital Standard servos |
| Torque Density | 12.8886 oz-in/g 3rd-highest torque density of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 481.64 oz-in/in³ 4th-highest torque-to-volume ratio of 1042 Digital Standard servos |
| Speed-to-Weight | 0.10204 (1/sec·g) Faster than 36% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 126.30 Better balanced than 99% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0136 A/oz-in More efficient than 57% of 315 Digital Standard servos |
| Torque Gain per Volt | 10.90%/V More voltage-responsive (torque) than 22% of 850 Digital Standard servos |
| Speed Gain per Volt | 11.36%/V More voltage-responsive (speed) than 25% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 57% of 1539 Digital Standard servos |
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