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.
helicopter, electronics end item identification, 0.3350 inches nominal overall width, 0.9014 inches minimum and 0.9018 inches maximum overall outside diameter, straight bore shape, 0.2500 inches minimum and 0.2503 inches maximum bore diameter