Overview
The KST X10 servo motor is a compact, lightweight coreless servo designed for precise position control in robotics and RC control surfaces. It supports a wide DC input range of DC4.8V-8.4V (rated DC7.4V) and provides up to 10.8Kgf.cm torque at DC8.4V. The X10 series is also shown alongside an X10 mini variant for comparison.
Key Features
- CNC aluminum case
- Dual ball bearings
- Hardened steel gear set
- Coreless DC motor
- Programmable soft start; programmable: Yes
Specifications
| Rated voltage | DC7.4V |
| Voltage range | DC4.8V-8.4V |
| Torque | 6.2Kgf.cm@4.8V; 7.5Kgf.cm@6.0V; 9.5Kgf.cm@7.4V; 10.8Kgf.cm@8.4V |
| Speed | 0.16sec/60deg@4.8V; 0.14sec/60deg@6.0V; 0.12sec/60deg@7.4V; 0.10sec/60deg@8.4V |
| Working frequency | 1520us/333Hz |
| Default travel angle | +/-50deg = 100deg Total |
| Signal voltage | HIGH: min.3.3V, max.5.0V; LOW: min.0.0V, max.1.5V |
| Pulse length range | 900us-2100us |
| Pulse lengths for position -50deg/0deg/+50deg | 1000us/1500us/2000us |
| Soft start | Programmable |
| Programmable | Yes |
| Motor type | Coreless DC Motor |
| Gear set material | Hardened Steel |
| Position sensor | Potentiometer |
| Operating temperature range | -10deg C ~ +65deg C |
| Case material | Aluminum Alloy |
| Case dimensions | 30mmx10mmx35.5mm+/-0.2mm |
| Weight | 28g+/-10% |
Applications
- Humanoid robots
- Robotic arms
- Exoskeletons
- Quadruped robots
- AGV vehicles
- ARU robots
- F3J, F3B, F3F wing and flap installations
Manuals
Series Note (X10 mini reference)
- Torque: 7.5Kgf.cm
- Speed: 0.1sec/60deg
- Weight: 23g
Details

Choose between the X10 and the smaller X10 mini size based on your torque, speed, and weight requirements.

The travel angle graphic helps visualize the servo’s working sweep for setting up control surfaces and robot joints.
