K02513XP0 ultra thin wall four point contact ball bearing is open‑type X metric thin‑section ball bearing with 13 mm cross‑section. Gothic‑arch raceway enables it to take radial, bidirectional axial and moment loads simultaneously. Single bearing can replace two angular contact bearings,features higher load capacity,compact envelope and high rotational accuracy. Widely used in robot joints,gimbals,optical inspection devices and automation machinery with limited installation space.

X-type four-point contact ball bearings - 13mm series feature a miniature four-point contact raceway design with optimized internal geometry, engineered to support bidirectional axial loads and moderate radial loads in a compact form factor. Available in open configurations only, with a fixed bore diameter of 13mm and a cross-section height of 13mm. These bearings deliver compact design, high axial rigidity, reliable bidirectional load capacity, and smooth rotational accuracy, making them ideal for small slewing rings, precision robot joints, optical adjustment mechanisms, miniature rotary tables, medical positioning devices, and compact automation systems where efficient use of space and reliable bidirectional load support are essential.