The PTI HC309 is a genuine bearing insert featuring a 49.21mm (1 15/16 inch) bore and a 90mm outer diameter. This robust ball bearing insert is designed with a spherical outer ring and a wide inner ring, ensuring secure shaft mounting and reliable performance in various demanding agricultural and industrial applications. It has an inner ring width of 54mm and an outer ring width of 27mm, with a total weight of approximately 0.82 kg.