The HFH KG055XP0 is a high-quality thin section ball bearing, specifically a radial contact (Type X) bearing, engineered for demanding applications where space and weight are critical. It features a precise inner diameter of 139.7 mm (5.500 inches), an outer diameter of 152.4 mm (6.000 inches), and a slim width of 6.35 mm (0.250 inches). Constructed from robust 52100 chrome steel, this bearing ensures durability and reliable performance. Its P0 precision grade makes it suitable for various industrial machinery requiring standard accuracy.