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。
0.250 inches nominal counterbore depth, faired mast assy, hdr end item identification, 90.0 degrees nominal edge angle, 1.875 inches nominal aperture diameter, 2.375 inches nominal counterbore diameter