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.
0.3125 inches nominal overall width, 5.1250 inches nominal overall outside diameter, 4.5000 inches nominal bore diameter, non-loading groove, non-separable style designator