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.
t-38 acft end item identification, 1.4563 inches minimum and 1.4567 inches maximum overall outside diameter, 0.3493 inches minimum and 0.3543 inches maximum overall width, 0.7871 inches minimum and 0.7874 inches maximum bore diameter