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Technical Specifications
Last Updated: 2026-10-26
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-0055 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
25.00 oz-in
1.80 kg-cm
0.2 N-m
7.4V
23.61 oz-in
1.70 kg-cm
0.2 N-m
6.0V
20.83 oz-in
1.50 kg-cm
0.1 N-m
3.8V
11.11 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
7.4V
0.08 sec/60°
800.0 deg/s
133.3 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 gTop 10% |
| 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/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 3.8–8.4 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 | Bottom 10% Stronger than 7% of 349 Digital Micro servos at 3.8V |
| Speed | Average Faster than 42% of 347 Digital Micro servos at 3.8V |
| Weight | Top 10% Lighter than 91% of 597 Digital Micro servos |
| Stall Current | Above Average Lower draw than 81% of 188 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.17–0.66 W |
| Power Density | 4.657 W/in³ More power-dense than 78% of 563 Digital Micro servos |
| Torque Density | 1.8517 oz-in/g Stronger than 22% of 349 Digital Micro servos |
| Torque-to-Volume Ratio | 78.34 oz-in/in³ Denser torque than 56% of 345 Digital Micro servos |
| Speed-to-Weight | 1.38889 (1/sec·g) Faster than 86% of 347 Digital Micro servos |
| Speed-Torque Trade-off | 1.33 Better balanced than 12% of 345 Digital Micro servos |
| Current-per-Torque Ratio | 0.0522 A/oz-in More efficient than 26% of 98 Digital Micro servos |
| Torque Gain per Volt | 27.18%/V More voltage-responsive (torque) than 89% of 290 Digital Micro servos |
| Speed Gain per Volt | 15.53%/V More voltage-responsive (speed) than 34% of 295 Digital Micro servos |
| Voltage Range Width | 4.6 V Wider voltage range than 93% of 496 Digital Micro servos |
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