Servo drive KST X15-1809 V8.0

Order the powerful KST X15-1809 V8.0 servo drive for precise and fast control

The KST (KST Servo) brand specializes in high quality servos for RC models. The company produces digital and brushless models. The range includes servos for aviation, automobiles and robots. KST is known for its reliability and accuracy.

• Brushless motor for long and quiet operation.
• Aluminum housing for excellent cooling.
• Torque 24 kg cm at 8.4 volts.
• Speed 0.07 seconds per 60 degrees.
• Programmable soft start and frequency modes.

How does a brushless servo drive work?

The electronic regulator supplies voltage to the stator windings. The rotor with magnets rotates without brushes. A position sensor (potentiometer) monitors the angle. The microcontroller compares the reference with the current position. When there is divergence, the engine rotates the shaft. Two ball bearings ensure smooth operation.

Technical characteristics and functionality

Model X15-1809 V8.0 has a nominal voltage of 7.4 V. The power supply range is from 6.0 to 8.4 V DC. The torque is 18 kg cm at 6.0 V. At 7.4 V the torque reaches 22 kg cm. At 8.4 V the moment increases to 24 kg cm. Speed ​​at 6.0 V is 0.09 s/60°. At 7.4V the speed improves to 0.08s/60°. At 8.4 V the speed reaches 0.07 s/60°.

Default operating frequency is 1520 µs / 333 Hz. The programmer can switch to 760 µs / 560 Hz. Default travel angle is ±50° (100° total). Operating temperature range from -10 to +65°C. Soft start is programmed for a specific model. The body is made of aluminum alloy.

Brushless (anchor-free) DC motor. Gearbox made of hardened steel. Position sensor potentiometer. Two ball bearings. Case dimensions 35.5×15×35.5 mm. Servo weight 45 g ±10%.

The servo is ideal for large RC planes and helicopters. Suitable for drones and robots. Programmable soft start protects the mechanics. High torque allows you to control large surfaces. Brushless design increases service life.

• Rated voltage: 7.4V DC
• Voltage range: 6.0 – 8.4 VDC
• Torque: 18 kgf cm at 6.0 V, 22 kgf cm at 7.4 V, 24 kgf cm at 8.4 V
• Speed: 0.09 s/60° at 6.0 V, 0.08 s/60° at 7.4 V, 0.07 s/60° at 8.4 V
• Operating frequency: 1520 µs / 333 Hz (default), 760 µs / 560 Hz (programmer required)
• Default travel angle: ±50° (total 100°)
• Operating temperature range: -10°C … +65°C
• Soft start: programmable
• Programmable: yes
• Shell material: aluminum alloy
• Motor type: brushless DC motor
• Gearbox material: hardened steel
• Position sensor: potentiometer
• Ball bearings: 2 bearings
• Case dimensions: 35.5 x 15 x 35.5 mm ±0.2 mm
• Weight: 45g ±10%