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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KST-0307 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
339.87 oz-in
24.47 kg-cm
2.4 N-m
7.4V
311.55 oz-in
22.43 kg-cm
2.2 N-m
6.0V
254.90 oz-in
18.35 kg-cm
1.8 N-m
Top 10%
|
| 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
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
|
| Physical | |
| Weight | 1.59 oz45.0 gBottom 10% |
| Dimensions |
L 1.398 in W 0.591 in H 1.398 in L 35.5 mm W 15.0 mm H 35.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T estimate |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Pulse Cycle | 3.003 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 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 | Top 10% Stronger than 100% of 290 Digital Mini servos at 6.0V |
| Speed | Above Average Faster than 75% of 293 Digital Mini servos at 6.0V |
| Weight | Bottom 10% Lighter than 4% of 505 Digital Mini servos |
Performance Analysis
| Shaft Power | 5.24–8.98 W |
| Power Density | 7.782 W/in³ More power-dense than 94% of 482 Digital Mini servos |
| Torque Density | 5.6644 oz-in/g Stronger than 98% of 286 Digital Mini servos |
| Torque-to-Volume Ratio | 220.96 oz-in/in³ Denser torque than 97% of 288 Digital Mini servos |
| Speed-to-Weight | 0.24691 (1/sec·g) Faster than 23% of 289 Digital Mini servos |
| Speed-Torque Trade-off | 22.94 Better balanced than 97% of 288 Digital Mini servos |
| Torque Gain per Volt | 13.89%/V More voltage-responsive (torque) than 31% of 257 Digital Mini servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 20% of 262 Digital Mini servos |
| Voltage Range Width | 2.4 V Wider voltage range than 52% of 405 Digital Mini servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0017 Finer dead band than 45% of 104 Digital Mini servos |
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Reviews (8)
Includes 8 reviews aggregated from around the web.
There are very few reviews for this servo on the web. Two customers at one retailer gave it 5 out of 5, with no written detail.
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