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.
annual ball bearing for quiet operation application to submarine usage departure from cited document, lips turned outwardly bearing seal type, 0.0004 inches minimum radial and 0.0008 inches maximum radial internal clearance, 1.3778 inches minimum and 1.3780 inches maximum bore diameter, straight bore shape