一種相對扁平的剛性部件,帶或不帶中心孔,用於將環形軸承或套筒軸承固定在合適的外殼中。必須附有用於安裝的鑽孔和/或螺紋孔。不含:端蓋、電動旋轉設備。
b-1b flight control end item identification, 3 bolt circle hole quantity, raised surface w/o aperture cross-sectional shape style, 0.218 inches nominal overall thickness, 0.375 inches minimum and 3.753 inches maximum outside raised surface diameter