A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing,ball,duplex. Excludes:bearing,ball,airframe.
2.7500 inches nominal inner ring width, 2.4375 inches minimum and 2.4381 inches maximum bore diameter, straight bore shape, standard internal fit-up designation, labyrinth bearing seal type