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.
2.1875 inches minimum and 2.1880 inches maximum bore diameter, standard internal fit-up designation, 21.00 millimeters nominal outer ring width, straight bore shape, radial load direction