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.
non-loading groove, non-separable style designator, 0.3070 inches minimum and 0.3120 inches maximum overall width, f-15 aircraft end item identification, 0.4997 inches minimum and 0.5000 inches maximum overall outside diameter