Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-10-09
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-1405 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
83.28 oz-in
6.00 kg-cm
0.6 N-m
7.4V
72.17 oz-in
5.20 kg-cm
0.5 N-m
6.0V
62.46 oz-in
4.50 kg-cm
0.4 N-m
3.8V
38.87 oz-in
2.80 kg-cm
0.3 N-m
Below Average
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
7.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
6.0V
0.13 sec/60°
461.5 deg/s
76.9 RPM
3.8V
0.21 sec/60°
285.7 deg/s
47.6 RPM
Bottom 10%
|
| Stall Current | ≤0.68 A≤680 mATop 10% |
| Physical | |
| Weight | 0.39 oz11.0 gAbove Average |
| Dimensions |
L 0.925 in W 0.315 in H 0.996 in L 23.5 mm W 8.0 mm H 25.3 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 15 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Dead Band | 1 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 3.8–8.4 V |
| Temperature | -20–65 °C-4–149 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Origin | |
| Country of Origin | China |
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 | Below Average Stronger than 17% of 60 Digital Slim servos at 3.8V |
| Speed | Bottom 10% Faster than 2% of 59 Digital Slim servos at 3.8V |
| Weight | Above Average Lighter than 83% of 103 Digital Slim servos |
| Stall Current | Top 10% Lower draw than 97% of 36 Digital Slim servos |
Performance Analysis
| Shaft Power | 0.34–1.71 W |
| Power Density | 5.894 W/in³ More power-dense than 89% of 99 Digital Slim servos |
| Torque Density | 3.5336 oz-in/g Stronger than 80% of 60 Digital Slim servos |
| Torque-to-Volume Ratio | 133.90 oz-in/in³ Denser torque than 71% of 60 Digital Slim servos |
| Speed-to-Weight | 0.43290 (1/sec·g) Faster than 83% of 59 Digital Slim servos |
| Speed-Torque Trade-off | 8.16 Better balanced than 36% of 59 Digital Slim servos |
| Current-per-Torque Ratio | 0.0175 A/oz-in More efficient than 59% of 671 Hobby servos |
| Torque Gain per Volt | 24.84%/V 5th-highest torque gain per volt of 56 Digital Slim servos |
| Speed Gain per Volt | 28.99%/V More voltage-responsive (speed) than 91% of 55 Digital Slim servos |
| Voltage Range Width | 4.6 V Wider voltage range than 95% of 93 Digital Slim servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 65% of 27 Digital Slim servos |
Similar Active Servos
Reviews of KST HS08A
Be the first to review!