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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-0054 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
24.98 oz-in
1.80 kg-cm
0.2 N-m
6.0V
20.82 oz-in
1.50 kg-cm
0.1 N-m
3.8V
11.10 oz-in
0.80 kg-cm
0.1 N-m
Bottom 10%
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
3.8V
0.12 sec/60°
500.0 deg/s
83.3 RPM
Average
|
| Stall Current | ≤0.58 A≤580 mAAbove Average |
| Physical | |
| Weight | 0.21 oz6.0 gAbove Average |
| Dimensions |
L 0.787 in W 0.276 in H 0.654 in L 20.0 mm W 7.0 mm H 16.6 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 15 T |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 3.3–5V |
| Electrical & Environment | |
| Operating Voltage | 3.8–8.4 V |
| Temperature | -10–65 °C14–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 150 mm5.91 in |
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 | Bottom 10% Stronger than 7% of 363 Digital Micro servos at 3.8V |
| Speed | Average Faster than 44% of 361 Digital Micro servos at 3.8V |
| Weight | Above Average Lighter than 85% of 665 Digital Micro servos |
| Stall Current | Above Average Lower draw than 76% of 222 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.17–0.66 W |
| Power Density | 4.653 W/in³ More power-dense than 79% of 625 Digital Micro servos |
| Torque Density | 1.8500 oz-in/g Stronger than 22% of 363 Digital Micro servos |
| Torque-to-Volume Ratio | 78.27 oz-in/in³ Denser torque than 56% of 359 Digital Micro servos |
| Speed-to-Weight | 1.38889 (1/sec·g) Faster than 84% of 361 Digital Micro servos |
| Speed-Torque Trade-off | 1.33 Better balanced than 13% of 358 Digital Micro servos |
| Current-per-Torque Ratio | 0.0523 A/oz-in More efficient than 24% of 108 Digital Micro servos |
| Torque Gain per Volt | 27.18%/V More voltage-responsive (torque) than 88% of 302 Digital Micro servos |
| Speed Gain per Volt | 15.53%/V More voltage-responsive (speed) than 34% of 305 Digital Micro servos |
| Voltage Range Width | 4.6 V Wider voltage range than 93% of 553 Digital Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0017 Finer dead band than 42% of 220 Digital Micro servos |
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Reviews (3)
Includes 3 reviews aggregated from around the web.
There are very few reviews for this servo on the web. A German forum member reports one of these servos suddenly stopped working in a model, though it ran fine when removed and bench-tested.
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