KD040XP0 ultra thin wall four point contact ball bearing belongs to KD‑XP0 Reali‑Slim thin‑section bearing family with 0.500‑inch equal square cross‑section. Made of premium 52100 chrome bearing steel and fitted with brass snap‑over cage. This Type‑X four‑point contact bearing can simultaneously undertake radial loads, bidirectional axial loads and overturning moment loads. It delivers low‑friction smooth rotation with compact lightweight profile, one single bearing can replace two angular contact bearings to save installation space. Widely used for rotary tables,optical instruments,robot joints and compact precision automation equipment under strict space‑limited conditions.

X-type four-point contact ball bearings - KD series feature a corrosion-resistant four-point contact raceway design with stainless steel rings and balls, engineered to support bidirectional axial loads and moderate radial loads in harsh environments while maintaining reliable moment rigidity. Available in open, shielded, and sealed configurations, with bore diameters ranging from 15mm to 200mm. These bearings deliver excellent corrosion resistance, reliable performance in moist or chemically exposed conditions, and long maintenance-free service life, making them ideal for medical equipment, food processing machinery, marine systems, chemical processing equipment, and outdoor automation applications.