
The KST X15-755X is a high-performance digital tail servo designed for mini-class RC helicopters with rotor blades ranging from 325mm to 425mm. Featuring a robust aluminum case, exceptional speed, and strong torque output, it is ideal for precision tail control in demanding 3D and high-performance flying.
🔧 Key Features
- Aluminum Alloy CNC-Machined Case: Excellent heat dissipation and structural rigidity under load.
- High-Precision Coreless Motor: Ultra-fast response with smooth and accurate tail control.
- Hardened Steel Gears: Built for durability and long service life under extreme torque.
- Dual Ball Bearings (2BB): Reduced friction, improved stability and efficiency.
- Potentiometer Position Sensor: Accurate and stable position feedback.
- Optional Position Feedback Support: Suitable for advanced telemetry systems (where applicable).
- 26 AWG Shielded Cable: Enhanced signal protection and durability.
- 760μs Narrow Pulse Compatibility: Optimized for high-speed helicopter tail rotor applications.
📊 Technical Specifications
| Operating Voltage | 6.0V – 8.4V DC |
| Pulse Width | 760μs |
| Working Frequency | 560Hz |
| Torque |
7.2 kg·cm @ 6.0V 9.0 kg·cm @ 7.4V 10.2 kg·cm @ 8.4V |
| Speed (60°) |
0.06 sec @ 6.0V 0.05 sec @ 7.4V 0.04 sec @ 8.4V |
| Motor Type | Coreless |
| Ball Bearings | 2 |
| Gear Material | Hardened Steel |
| Dimensions | 35.5 × 15 × 32.5 mm |
| Weight | Approx. 40g |
| Signal Type | Digital (760μs Narrow Pulse) |
The KST X15-755X is a premium choice for pilots seeking fast, durable, and highly accurate tail control. Its robust construction and narrow pulse compatibility make it an excellent match for modern flybarless helicopter systems.