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, 0.2497 inches minimum and 0.2500 inches maximum bore diameter, straight bore shape, 0.0002 inches minimum radial and 0.0006 inches maximum radial internal clearance, radial load direction