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.
b-1b acft end item identification, 3.2495 inches minimum and 3.2500 inches maximum overall outside diameter, straight bore shape, angular load direction, 2.5621 inches minimum and 2.5625 inches maximum bore diameter