The JCB 80902031 is a genuine ball bearing, identified as GB 55-65-85, designed for use in various JCB machines. This high-quality bearing features an inner diameter of 55 mm, an outer diameter of 85 mm, and a width of 65 mm, ensuring precise fit and reliable performance in demanding agricultural and construction applications. Weighing 0.50 kg, it is built to OEM specifications for durability and longevity.