industrial robotic arm 3d model

Professional 6-axis industrial collaborative robotic arm, precise UR3e kinematic architecture. Strictly single serial link manipulator without extra limbs or branches. Engineering geometry: all joints are perfect smooth concentric cylinders and thick drum-shaped rotary discs. Axis 1, 2, and 3 feature massive 62mm diameter cylindrical housings designed to integrate NEMA 17 (42.3mm flange) stepper motors with internal planetary gearsets. Axis 4, 5, and 6 feature a stepped reduction in diameter to 38mm cylindrical joints to house NEMA 11 (28mm flange) motors. Main segments: long, straight, hollow cylindrical tubes for internal cable routing. Shoulder: reinforced 90-degree L-shaped offset. Forearm: elongated straight pipe optimized for a large 800mm reach workspace. End effector: flat circular tool flange with 40mm diameter. Surface: clean CAD-style manifold mesh, no decorative clutter, no external wiring, no organic curves, no fingers. High-poly watertight geometry for STL export.