液(ye)(ye)(ye)壓(ya)(ya)(ya)傳動(dong)(dong)(dong)是以液(ye)(ye)(ye)體為(wei)工作(zuo)介(jie)(jie)質(zhi)，利用液(ye)(ye)(ye)體的(de)壓(ya)(ya)(ya)力(li)能(neng)(neng)(neng)來(lai)實(shi)現(xian)運動(dong)(dong)(dong)和(he)力(li)的(de)一種傳動(dong)(dong)(dong)方式。一般(ban)而(er)言(yan)，能(neng)(neng)(neng)夠(gou)實(shi)現(xian)某(mou)種特定功(gong)能(neng)(neng)(neng)的(de)液(ye)(ye)(ye)壓(ya)(ya)(ya)元(yuan)(yuan)件的(de)組合，稱為(wei)液(ye)(ye)(ye)壓(ya)(ya)(ya)回路(lu)，而(er)若干特定的(de)基本(ben)功(gong)能(neng)(neng)(neng)回路(lu)連接(jie)或(huo)復合而(er)成(cheng)的(de)總體則稱為(wei)直流液(ye)(ye)(ye)壓(ya)(ya)(ya)動(dong)(dong)(dong)力(li)單元(yuan)(yuan)。直流液(ye)(ye)(ye)壓(ya)(ya)(ya)動(dong)(dong)(dong)力(li)單元(yuan)(yuan)通常都是由液(ye)(ye)(ye)壓(ya)(ya)(ya)元(yuan)(yuan)件（動(dong)(dong)(dong)力(li)元(yuan)(yuan)件、執行(xing)元(yuan)(yuan)件、控制元(yuan)(yuan)件、輔助(zhu)元(yuan)(yuan)件）和(he)工作(zuo)介(jie)(jie)質(zhi)兩大部分組成(cheng)。

直流液壓動力單元型號規格：