管狀物件,帶或不帶凸緣,旨在減少摩擦,並在平行於孔軸線的表面上承載動載荷。必須具有可見或可檢測的潤滑裝置,或可自潤滑。總長度必須超過外徑的25%或本體週邊平面之間的最短距離,但直管狀(無凸緣或肩部)物體除外,其承載面僅平行於孔軸線。包括分成兩段或多段,且承載圓週角不超過180度(3.141弧度)的物件。另請參閱襯套、套筒;墊片、套筒;以及墊圈(經修改)。不含:銷、空心。
copper alloy 630 or copper alloy 642 or copper alloy 954 or copper alloy 932 or copper alloy 632 overall material, qq-c-465 fed spec 1st material response or qq-c-465 fed spec 2nd material response or qq-c-390,ty 2 fed spec 3rd material response overall material document and classification