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     骨架油封是機器用來封油（油是傳動體系中zui罕見的液體物資，也泛指普通的液體物資之意）的組合墊圈密封件，骨架油封將傳動部件中須要光滑的部件與著力部件斷絕，不至于讓光滑油滲漏。從骨架油封的密封感化、特色、布局范例、任務狀況和密封機理等能夠分紅多種情勢和差別叫法。骨架油封的代表情勢是TC骨架油封，這是一種橡膠*包覆的帶自緊彈簧的雙唇骨架油封，普通說的油封常指這類TC骨架油封。密封道理：因為在油封與軸之間存在著油封刃口節制的油膜，此油膜具備流體光滑特征。在液體外表張力的感化下，油膜的剛度剛好使油膜與氛圍打仗端構成一個月牙面，避免了任務介質的泄露，從而完成扭轉軸的密封。油封的密封才能，取決于密封面油膜的厚度，厚渡過大，油封泄露；厚渡太小，能夠產生干磨擦，引發油封和軸磨損；密封唇與軸之間不油膜，則易引發發燒、磨損。是以，在裝置時，必須在結合(he)墊圈油封上涂些油，同時保障骨架油封與軸心線垂直，若不垂直，油封的密封唇會把光滑油從軸上排干，也會致使密封唇的過分磨損。在運行中，殼體內的光滑劑輕輕排泄一點，以到達在骨架油封密封面處構成油膜的狀況zui為抱負。.