安裝在軸承和軸承座之間的剛性管狀物,主要設計為軸承座內壁內的可更換磨損表面。
b1-b acft end item identification, bronze,mueller 600 per romec spec s-189;1.360 in. lg;1.9364 in. min 1.9369 in. max o.d.;1.375 in. bore dia;outer shoulder 0.180 in. lg;inner shoulder 0.150 in lg;space between shoulders0.6915 in. general characteristics item description