The SA20A series is a new generation of SCARA robots launched by Siasun, featuring high inertia, strong rigidity, and high precision. It adopts a modular design to meet more automation scenarios while reducing maintenance costs. Both the X and Y axes are equipped with a double-support structure, further enhancing rigidity. The combined ball screw transmission structure increases the torsional direction rigidity by approximately 30% and the rotational direction rigidity by about 70%, while also being able to withstand greater rotational inertia. It is widely used in applications such as large component pick-and-place, handling, and mechanical assembly under high-load conditions, such as in lithium battery and automotive parts manufacturing.