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.
actuator assembly used on air shutoff butterfly valves, part numbers 35277 and 35277a special features, steel overall material, bearing,ball,annular part name assigned by controlling agency, straight bore shape, actuator assembly end item identification