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Technical Specifications
Last Updated: 2026-10-22
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 | 4-pole |
| 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 1060 Digital Standard servos at 6.0V |
| Speed | Average Faster than 51% of 1045 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 35% of 1880 Digital Standard servos |
| Stall Current | Bottom 10% Lower draw than 0% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 11.92–19.13 W |
| Power Density | 10.213 W/in³ More power-dense than 98% of 1768 Digital Standard servos |
| Torque Density | 12.8886 oz-in/g 2nd-highest torque density of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 481.64 oz-in/in³ 2nd-highest torque-to-volume ratio of 1058 Digital Standard servos |
| Speed-to-Weight | 0.10204 (1/sec·g) Faster than 38% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 126.30 Better balanced than 99% of 1034 Digital Standard servos |
| Current-per-Torque Ratio | 0.0136 A/oz-in More efficient than 55% of 331 Digital Standard servos |
| Torque Gain per Volt | 10.90%/V More voltage-responsive (torque) than 22% of 873 Digital Standard servos |
| Speed Gain per Volt | 11.36%/V More voltage-responsive (speed) than 25% of 874 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 57% of 1560 Digital Standard servos |
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