Servo drive KST MS325

Buy the innovative KST MS325 V6.0 servo with magnetic sensor for your FPV drone!

Give your actuators unrivaled precision and reliability. The KST MS325 V6.0 servo drive is a revolutionary solution that uses a non-contact magnetic position sensor (Hall Effect) instead of the traditional potentiometer, which is the weakest link of conventional servos . This advanced technology eliminates wear and play, ensuring perfect alignment and stability throughout its service life .

Designed for heavy-duty applications including 450-480 class helicopters and unmanned aerial vehicles, this servo is the ideal choice for controlling the payload release systems and rotating gimbals on your professional drone .

• Innovative non-contact magnetic sensor. Replaces the potentiometer, providing absolute accuracy, no backlash and exceptional durability.

• Premium Coreless motor. The highly efficient coreless motor guarantees fast response, smooth running and minimal energy loss.

• High torque. Develops force up to 5.2 kg/cm at a voltage of 8.4V for confident control of the most demanding mechanisms.

• Lightning speed. Just 0.07 seconds per 60 degrees at 8.4V provides instant response to pilot commands.

• Maximum reliability. CNC aluminum housing, hardened steel gears and dual ball bearings ensure durability and rigidity of the design.

Operating principle and design

KST MS325 V6.0 is a digital HV servo drive based on advanced non-contact magnetic positioning technology. Instead of a wear-prone potentiometer, it uses a Hall effect sensor that senses the rotor position without physical contact . This not only eliminates backlash and mechanical wear, but also ensures the highest alignment accuracy and repeatability throughout the entire service life . Combined with a highly efficient coreless motor with minimal rotor inertia, the servo drive exhibits exceptional responsiveness and smooth operation.

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. Hardened steel gearbox with two precision ball bearings minimizes backlash and guarantees shock resistance.

The programmable Soft Start function protects mechanisms from sudden jerks when turning on the power. The servo operates in a voltage range of 6.0-8.4V (2S LiPo), making integration into the system easy.

Specifications and Compatibility

Originally designed for 450-480 class helicopters, this servo is ideal for use in professional FPV drones to drive load drop systems and gimbal rotation mechanisms where absolute reliability and precision are required. No backlash and high repeatability make it an ideal choice for the most demanding unmanned aircraft applications.

Specifications

• Item: MS325 micro servo drive
• Rated voltage: DC 6.0V
• Voltage range: DC 6.0V - 8.4V
• No-load speed: 0.09 seconds/60°@6.0V, 0.08 seconds/60°@7.4V, 0.07 seconds/60°@8.4V
• Stopping torque: 3.8 kgf.cm@6.0 V, 4.6 kgf.cm@7.4 V, 5.2 kgf.cm@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: Coreless DC Motor
• Gear set material: hardened steel
• Position sensor: Non-contact
• Case Dimensions: 23mm*12mm*27.5mm±0.2mm
• Weight: 20g ± 10%.