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 usagee departure from cited document, steel overall material, zzzw criticality code justification, annular ball bearing for quiet operation application to submarine usage reference number differentiating characteristics