The WON S-Series linear guides are designed with a four-row circular arc groove and X contact. This advanced system allows uniform load distribution in four directions, supporting equivalent loads in vertical compression, tension, and horizontal forces, thanks to the 45-degree ball angle acting as a rolling element. This configuration significantly reduces friction, ensuring smooth and precise motion with extended durability. Applying preload to the balls increases the linear guide's rigidity, minimizing deformation under external loads and optimizing structural performance.