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.
0.0004 inches minimum radial and 0.0008 inches maximum radial internal clearance, 0.7872 inches minimum and 0.7884 inches maximum bore diameter, tested for quiet operation applicable to submarine usage departure from cited designator, straight bore shape, lips turned outwardly bearing seal type