The HFH A550XFO2RS is a genuine HFH thin section ball bearing, designed for applications requiring high precision and reduced space. This bearing features a 139.7 mm (5.500 inch) bore, a 152.4 mm (6.000 inch) outer diameter, and a 6.35 mm (0.250 inch) width. It is equipped with 2RS rubber seals on both sides to protect against contaminants and retain lubricant, ensuring extended service life and reliable performance in various industrial and machinery environments. Constructed from durable chrome steel for robust operation.