


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. With a robust aluminum case, exceptional speed, and torque, it's ideal for precision flight control in demanding 3D and high-performance environments.
🔧 Key Features
- Aluminum Alloy CNC-Machined Case: Ensures excellent heat dissipation and structural rigidity under load.
- High-Precision Coreless Motor: Delivers ultra-fast response and smooth operation for precise tail control.
- Hardened Steel Gears: Designed for exceptional durability and long service life under extreme torque.
- Dual Ball Bearings (2BB): Reduces friction, increases stability, and improves efficiency.
- Potentiometer Position Sensor: Enables accurate and stable position control feedback.
- Optional Position Feedback Support: Useful for telemetry or advanced control systems (where applicable).
- 26 AWG Shielded Cable: Provides enhanced protection against signal interference and physical wear.
- Narrow Pulse Width (760μs) Signal Compatibility: Optimized for helicopter tail rotor applications requiring high-speed response.
📊 Technical Specifications
Specification | Value |
---|---|
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) |
This servo is a premium choice for pilots seeking fast, durable, and highly accurate tail control. Its robust design and narrow pulse compatibility make it a perfect fit for modern flybarless helicopter systems.