MyActuator RMD X8-120 V4 Planetary Actuator (EtherCAT & CAN, Dual Encoder)
MyActuator RMD X8-120 V4 Planetary Actuator (EtherCAT & CAN, Dual Encoder)
🚀 Latest-generation smart joint actuator for humanoid & legged robots
🔍 Product Overview
The MyActuator X8-120 is an RMD-X V4 integrated planetary joint actuator - a complete robot joint in a single unit that combines a high-power-density BLDC motor, a tempered-gear planetary reducer, an FOC driver and dual encoders into one sealed, bus-controlled module. The V4 generation adds EtherCAT alongside CAN and a feedforward motion mode for dynamic, force-controlled movement. It eliminates the need to engineer your own motor + gearbox + driver + encoder stack, which is why integrated smart actuators are the single most important building block of a modern humanoid robot.
📋 Technical Specifications
Model | MyActuator X8-120 |
Type | RMD-X V4 integrated planetary joint actuator |
Peak torque | 120 Nm |
Weight | approx. 1.4 kg |
Communication | EtherCAT + CAN BUS |
Feedback | Dual encoders (input 17-bit / output 18-bit class) |
Position feedback | Absolute output angle, -180 deg to +180 deg |
Supply voltage | 24-48 V DC |
Power connector | XT30(2+2), 15 A rated / 30 A peak |
CAN baud rate | up to 1 Mbps |
Control modes | Torque (current), velocity, position + feedforward motion |
Integration | BLDC motor + reducer + FOC driver + encoder in one module |
Output bearing | Crossed-roller (high radial/axial rigidity) |
🧩 Applications
Humanoid robot hip, knee, ankle, shoulder, elbow and wrist joints
Quadruped / biped legged robots and biped-wheeled platforms
Wire-drive and direct-drive robotic arms and manipulators
Exoskeletons and rehabilitation / assistive robotics
Pan-tilt camera heads, gimbals and sensor positioning
AGV / AMR drive and steering, industrial automation R&D
🎥 Video Tutorial
Watch a build / demonstration: MyActuator RMD-X8 hands-on tutorial (YouTube)
🎯 Who Is This For?
Startup founders prototyping humanoid or legged platforms, robotics enthusiasts building open-source designs (LeRobot, quadrupeds, arms), and industrial R&D teams developing manipulators, exoskeletons and AGV/AMR systems. Full C++/Python SDK, ROS 2 support and the MyActuator Assistant configuration tool are available.
⚠️ Price & Shipping Disclaimer
This product is imported on demand. The price shown is an approximate estimate only and may vary due to international shipping, logistics, customs duties, and currency exchange at the time of order. The exact final price will be confirmed with you before your order is processed.