任何週邊形狀的物件,通常具有一個平面或球面以及一個位於中心的孔。其設計用於涉及移動(動能)載荷的應用。除由軸承級合成材料(塑膠)或多層材料製成的物件外,其中一個軸承面必須具有特定的表面光潔度等級,即32微英吋(0.8微米)或更小、算術平均值(aa)(算術平均偏差)或以下條件之一:經研磨或研磨;具有可見或可檢測的潤滑方式;凹槽、壓痕平均偏差)或自潤滑。厚度不得超過週邊平面之間最短距離外徑的25%(當厚度和/或外徑被指定為公差尺寸時,將使用最大尺寸來確定是否符合要求)。不包括:僅具有與孔軸線平行的軸承面的直管狀(無凸緣)物件。另請參閱墊圈、平面和墊片、套筒。
material controlled iaw ss800-ag-man-010/p-9290 system certification procedures and criteria manual for deep submergence systems. critical item for safety and survival of deep submergence research and rescue vehicles as differentiated by special test features. reference number differentiating characteristics, (1) at assembly thread bearing retainer pn 12 onto the ball screw nut pn 2 as close to flush as possible with end of ballnut thread. see section 11-58. lubricate threads on the ballscrew nut pn 2 with aeroshell no 22 per dod-g-24508 (eb pn 52-06-37258). (2) position pn 12, locating (8) 0.406 diameter holes 22.5 degrees from 0.687 diameter hole in pn 31 and 0.500 keyways in pn 3. see section 10-2e. special features, retainer, bearing part name assigned by controlling agency, operator housing assy. lockout ballscrew assembly. end item identification, zzzy criticality code justification