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.
mil-g-25013 mil spec single material response lubrication material document and classification, 0.5000 inches nominal bore diameter, straight bore shape, 0.0005 inches minimum radial and 0.0008 inches maximum radial internal clearance, radial load direction