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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-0305 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
187.38 oz-in
13.49 kg-cm
1.3 N-m
7.4V
166.56 oz-in
11.99 kg-cm
1.2 N-m
6.0V
136.03 oz-in
9.80 kg-cm
1.0 N-m
Above Average
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
7.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
6.0V
0.10 sec/60°
600.0 deg/s
100.0 RPM
Above Average
|
| Physical | |
| Weight | 1.41 oz40.0 gBelow Average |
| Dimensions |
L 1.398 in W 0.591 in H 1.28 in L 35.5 mm W 15.0 mm H 32.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| 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 | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | 3.3–5V |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–55 °C14–131 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 290 mm11.42 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 | Above Average Stronger than 90% of 290 Digital Mini servos at 6.0V |
| Speed | Above Average Faster than 67% of 293 Digital Mini servos at 6.0V |
| Weight | Below Average Lighter than 10% of 505 Digital Mini servos |
Performance Analysis
| Shaft Power | 2.52–4.95 W |
| Power Density | 4.686 W/in³ More power-dense than 83% of 482 Digital Mini servos |
| Torque Density | 3.4008 oz-in/g Stronger than 81% of 286 Digital Mini servos |
| Torque-to-Volume Ratio | 128.80 oz-in/in³ Denser torque than 80% of 288 Digital Mini servos |
| Speed-to-Weight | 0.25000 (1/sec·g) Faster than 24% of 289 Digital Mini servos |
| Speed-Torque Trade-off | 13.60 Better balanced than 84% of 288 Digital Mini servos |
| Torque Gain per Volt | 15.73%/V More voltage-responsive (torque) than 43% of 257 Digital Mini servos |
| Speed Gain per Volt | 17.85%/V More voltage-responsive (speed) than 58% of 262 Digital Mini servos |
| Voltage Range Width | 2.4 V Wider voltage range than 56% of 405 Digital Mini servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0017 Finer dead band than 50% of 104 Digital Mini servos |
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Reviews (6)
Includes 6 reviews aggregated from around the web.
There are few reviews for this servo on the web. Four of the five buyers gave five stars. Owners say it fits Kraken 580 and XLPower 520 helicopter builds perfectly, is fast with lots of torque, centers well and runs quietly, and one calls the price great.
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