Custom 5-Axis CNC Machined Aluminum Robot Arm Body Structural Component, Lightweight Humanoid Robot Frame Part

This robot arm body component is the main load-bearing frame of a humanoid robotic arm, designed to connect joint modules and support motors, reducers, sensors and internal cable routing. It is manufactured by 5-axis CNC milling, completing complex features such as large inner cavities, mounting flanges, bearing seats, reinforcing ribs, threaded holes and relief grooves in a single setup, minimizing cumulative positioning error. The lightweight aluminum structure reduces arm inertia and improves motion responsiveness and payload capacity. We accept custom orders based on STEP/IGS files or physical samples. 6061 / 7075 aluminum alloy options are available. Material certificates and CMM inspection reports can be supplied to meet strict requirements for high precision, rigidity and stability in humanoid robots, collaborative robots and advanced automation equipment.