Servo drive KST X20-1806

Order the innovative KST X20-1806 servo drive for your FPV drone and complex mechanisms!

Give your actuators exceptional accuracy and lightning-fast response. The KST X20-1806 servo drive is the world's first servo drive with a 4-pole brushless motor, delivering unrivaled efficiency and performance . Its low-profile design makes it ideal for mounting racing drones, cargo drop mechanisms and rotary gimbals in tight spaces. High-quality materials and sophisticated design ensure reliable performance in the most extreme flight conditions.

• Innovative 4-pole brushless motor. Provides ultra-fast response, high efficiency and exceptional smoothness .

• Colossal torque. Develops force up to 18 kg/cm at 8.4V for confident control of heavy machinery.

• Lightning speed. Just 0.06 seconds per 60 degrees at 8.4V guarantees instant response to pilot commands.

• Maximum reliability. All-steel gears, dual ball bearings, and CNC aluminum housing provide durability and rigidity to the design.

• Protection from external influences. IP65 waterproofing allows the servo to be used in wet weather and when planting in wet grass.

Operating principle and design

KST X20-1806 is a digital HV servo drive based on advanced 4-pole brushless motor technology. Unlike traditional motors, this design provides significantly higher response speed and efficiency, which is critical for precise positioning of load release mechanisms or camera gimbal control in dynamic flight. The high-precision digital controller processes the signal at a frequency of 333 Hz (1520 µs), ensuring exceptional accuracy and smooth movement without jerking.

The durable, CNC-machined, aircraft-grade aluminum casing not only adds rigidity to the structure, but also effectively dissipates heat, maintaining stable performance under long-term use. The hardened steel gearbox and two precision ball bearings minimize backlash and ensure durability even under heavy use. IP65 water resistance reliably protects internal electronics from splashes and moisture.

Specifications and Compatibility

The servo is compatible with a standard 25 tooth output shaft spline (Futaba compatible). The ability to program parameters, including the Soft Start function, allows you to precisely tailor its operation to specific tasks, be it a smooth opening of the reset lock or aggressive positioning.

Specifications

• Rated voltage: 7.4V DC
• Voltage range: DC 6.0V - 8.4V
• Torque: 14 kgf.cm@6.0 V, 16 kgf.cm@7.4 V, 18 kgf.cm@8.4 V
• Speed: 0.08 seconds/60°@6.0V, 0.07 seconds/60°@7.4V, 0.06 seconds/60°@8.4V
• Inrush Current: 4.0 A @ 6.0 V, 4.8 A @ 7.4 V, 5.8 A @ 8.4 V
• Operating frequency: 1520 µs/333 Hz
• Default stroke angle: ±100° =200° Total
• Temperature range: -20 +65
• Soft start: programmable
• Programmable: Yes
• Shell material: aluminum alloy
• Motor type: 4-pole brushless DC motor
• Gear set material: hardened steel
• Position sensor: Potentiometer
• Ball bearing: 2BB
• Case Dimensions: 40.5mm*20mm*23.1mm±0.2mm
• Weight: 50g ± 10%.