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.
0.3438 inches nominal inner ring width, straight bore shape, 25.0 degrees maximum contact angle, standard internal fit-up designation, 0.3125 inches minimum and 0.3175 inches maximum bore diameter