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-3278 mil spec single material response lubrication material document and classification, 0.1873 inches minimum and 0.1875 inches maximum bore diameter, straight bore shape, 0.0003 inches minimum radial and 0.0005 inches maximum radial internal clearance, radial load direction