The SIASUN SR270A-220/3.21 robot features a large arm span of 3218 mm, enabling an extensive reachable range; its five axes utilize backlash-free gearboxes and rigid connections to ensure high rigidity and suppress high-speed jitter; combined with NURBS trajectory planning and variable speed/variable acceleration planning, it delivers maximum efficiency; the wrist is equipped with a custom motor that balances strong torque and high load capacity.