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.
zzzw criticality code justification, radial load direction, straight bore shape, annual ball bearing for quiet operation application to submarine usage departure from cited document, 4.3304 inches minimum and 4.3307 inches maximum bore diameter