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Technical Specifications
Last Updated: 2026-10-10
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
Above Average
|
| 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
Below Average
|
| Stall Current | ≤0.58 A≤580 mA |
| Physical | |
| Weight | 0.21 oz6.0 gBelow 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/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 |
| 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 | Above Average Stronger than 68% of 29 Nano servos at 3.8V |
| Speed | Below Average Faster than 14% of 29 Nano servos at 3.8V |
| Weight | Below Average Lighter than 15% of 41 Digital Nano servos |
Performance Analysis
| Shaft Power | 0.17–0.66 W |
| Power Density | 4.657 W/in³ 4th-highest power density of 35 Digital Nano servos |
| Torque Density | 1.8517 oz-in/g Stronger than 15% of 74 KST servos |
| Torque-to-Volume Ratio | 78.34 oz-in/in³ Denser torque than 16% of 74 KST servos |
| Speed-to-Weight | 1.38889 (1/sec·g) 3rd-highest speed-to-weight of 73 KST servos |
| Speed-Torque Trade-off | 1.33 Better balanced than 3% of 73 KST servos |
| Current-per-Torque Ratio | 0.0522 A/oz-in More efficient than 10% of 671 Hobby servos |
| Torque Gain per Volt | 27.18%/V More voltage-responsive (torque) than 93% of 73 KST servos |
| Speed Gain per Volt | 15.53%/V More voltage-responsive (speed) than 49% of 72 KST servos |
| Voltage Range Width | 4.6 V Wider voltage range than 84% of 32 Digital Nano servos |
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