2ピース分割型ベアリングの片側、スリーブです。
18.0000 inches minimum and 18.0010 inches maximum body inside diameter, square all corners corner shape, 20.4990 inches minimum and 20.5000 inches maximum body outside diameter, used on western reduction gear box onboard 378 ft whec coast guard vessels end item identification, 1 hole antirotation/lubrication type and quantity