一種組裝單元,由包含單列或多列滾珠軸承的外殼組成,設計用於滿足各種或特定的安裝條件。
carrier,cgo trk 7t ammo,model no.xm992,nsn 2350-01-110-4660: carrier ammunition,nsn 2350-01-163-1437 end item identification, 1.0000 inches nominal bore diameter, rigid alignment type, 3.890 inches nominal bolt circle diameter, fixed block type