3kg Lightweight Humanoid Robot Arm

1. Full-Rotation Actuator Configuration

The single arm is constructed using the MJA-H Series lightweight rotary actuators , delivering a lighter, more compact, and space-efficient design.

The joint actuator for the 7 axes are:

• Axis 1: MJA-H17Z
• Axis 2: MJA-H17T
• Axes 3–4: MJA-H17S
• Axes 5–7: MJA-H11

2. Core Specifications

Single arm weight: 5.6 kg

Payload capacity: ≤3 kg per arm

Arm reach: 600 mm

Maximum central cable routing hole: 5 mm

3. Servo Drive System

Supports real-time communication via EtherCAT and CANopen protocols.

4. Intelligent Control System

Compatible with an embodied AI cerebellar control system, providing advanced motion control algorithms and domain-specific AI models. Enables complex trajectory planning, low-level secondary development interfaces, and millisecond-level command response.

"The 3kg lightweight humanoid robot arm case demonstrates how Techrobots' MJA-H series joint actuator enable rapid development of compact, high-dexterity arms for service robots, research platforms, and embodied AI applications." "Weighing just 5.6kg per arm with a 600mm reach, this solution is directly compatible with embodied AI cerebellum control systems for millisecond-response trajectory planning — dramatically reducing humanoid robot development cycles."