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.
2.8346 inches nominal overall outside diameter, valve,3,4 and 5,globe flow control end item identification, 1.3780 inches nominal bore diameter, 0.6693 inches nominal overall width, bearing,ball part name assigned by controlling agency