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液壓氣動密封件—BA返回 >>
概   況型號參數(shù)

PARK-0-PAK?BA型是唇形密封進步發(fā)展的結(jié)果。它兼有高彈性O形圈和唇形密封材料耐磨性的優(yōu)點。這種特殊的密封件因其特殊的結(jié)構(gòu)(裝配的O形圈),主要用于行走設(shè)備。這個O形圈保證了密封唇口在低壓或真空條件下的預(yù)壓縮量,這對密封性能是很必要的。密封力基本上與溫度的變化無關(guān), 并且即使發(fā)生某種程度的磨損也會保證必要的預(yù)壓縮量。唇口由于系統(tǒng)壓力的增加而負載,這種系統(tǒng)壓力通過受壓變形的O形圈傳遞至唇上。

這種密封件的主要優(yōu)點是:

?特別強的耐磨性。

?對震動載荷和壓力峰值的不敏感性。

?很高的抗擠壓性。

?在無載和低溫的條件下具有理想的密封作用。

?適用于最苛刻的工作條件。

?易于安裝。

應(yīng)用范圍:

工作壓力:350bar

工作溫度:-35+80°C 峰值達+95°C

表面速度:≤0.5m/s

當(dāng)選擇某一直徑用的密封件時,最好選擇有最大可能橫截面積的密封件。

主要用于密封柱塞、活塞桿、氣鉆、多級缸、鍛壓機以及行走設(shè)備用液壓裝備。對于以上所述及其它方面的應(yīng)用,本公司可按用戶要求提供技術(shù)咨詢。

   裝:

注意密封件有一個軸向間隙(參看表中 的HL欄)。為了避免在安裝期間損壞密封唇口,不要將密封件在銳邊上拉動。通常,這類密封件是裝入閉式溝槽中的。對于極限直徑和極限橫截面的情況,當(dāng)結(jié)構(gòu)不許采用開式溝槽時,應(yīng)使用安裝輔助工具。

   料:

P5004是一種邵氏硬度A93的聚氨酯,O形圈材料N0674是邵氏硬度A約為70的丁腈橡膠。

如有特殊要求(壓力、溫度、速度等),請與本公司的咨詢服務(wù)部聯(lián)系, 他們會向您推薦合適的材料和結(jié)構(gòu)。






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