Overview
KST A08 is a coreless servo motor designed for compact, high-response motion control in robotics and RC-style PWM control systems. It uses an aluminum alloy housing and supports a DC operating voltage range of 3.8V to 7.4V.
Key Features
- Coreless DC motor
- Aluminum alloy housing (CNC aluminum case)
- Hardened steel (as stated for A08 Series)
- Programmability (as stated for A08 Series)
Specifications
| Rated Voltage | DC 7.4V |
| Operating Voltage Range | DC 3.8V - 7.4V |
| Stall Torque | 1.40 kgf.cm @ 3.8V; 2.80 kgf.cm @ 7.4V |
| No-Load Speed | 0.10 sec/60deg @ 7.4V |
| Operating Frequency | 1520 us / 333 Hz |
| Default Rotation Angle | +/-60 deg (120 deg Total) |
| Signal Input Voltage | HIGH: min. 3.3V, max. 5.0V; LOW: min. 0.0V, max. 1.5V |
| Pulse Width Range | 900 us - 2100 us |
| Motor Type | Coreless DC Motor |
| Housing Material | Aluminum Alloy |
| A08 Series Torque (stated) | 3.2 kg.cm |
| A08 Series Speed (stated) | 0.09 sec/60° |
What's Included
- 1 x A08 V6.0 Micro Servo
- 4 x Plastic Servo Horn
- 4 x Mounting Screw
- 1 x Servo Horn Screw
Also shown as the same pack list for A08H V6.0 Micro Servo and A08N V6.0 Micro Servo.
Applications
- Humanoid robots
- Robotic arms
- Exoskeletons
- Quadruped robots
- AGV vehicles
- ARU robots
Manuals
Details

Compact A08 Series coreless micro servos pair a CNC aluminum housing with fast response for robotics and RC PWM control.

Everything needed to install the servo is included: the A08 V6.0 micro servo, four plastic horns, and mounting hardware.

A08H V6.0 uses the same accessory pack—multiple horn styles plus mounting screws—for quick fitment in tight builds.

A08N V6.0 ships with the servo, four horn options, and the screws required for mounting and securing the horn.

The default travel is a 120° total sweep (±60°), ideal for compact linkages and precise joint control.

