液(ye)(ye)(ye)壓(ya)傳動(dong)(dong)(dong)是以液(ye)(ye)(ye)體為(wei)工作(zuo)介質，利(li)用液(ye)(ye)(ye)體的壓(ya)力(li)(li)能來實現運動(dong)(dong)(dong)和力(li)(li)的一(yi)種傳動(dong)(dong)(dong)方式。一(yi)般而(er)言(yan)，能夠實現某種特定功能的液(ye)(ye)(ye)壓(ya)元(yuan)(yuan)(yuan)件的組合(he)，稱為(wei)液(ye)(ye)(ye)壓(ya)回路，而(er)若干(gan)特定的基本(ben)功能回路連接或復合(he)而(er)成(cheng)(cheng)的總體則稱為(wei)直(zhi)流(liu)液(ye)(ye)(ye)壓(ya)動(dong)(dong)(dong)力(li)(li)單(dan)元(yuan)(yuan)(yuan)。直(zhi)流(liu)液(ye)(ye)(ye)壓(ya)動(dong)(dong)(dong)力(li)(li)單(dan)元(yuan)(yuan)(yuan)通(tong)常(chang)都是由液(ye)(ye)(ye)壓(ya)元(yuan)(yuan)(yuan)件（動(dong)(dong)(dong)力(li)(li)元(yuan)(yuan)(yuan)件、執(zhi)行元(yuan)(yuan)(yuan)件、控(kong)制元(yuan)(yuan)(yuan)件、輔助元(yuan)(yuan)(yuan)件）和工作(zuo)介質兩大(da)部分組成(cheng)(cheng)。

直流(liu)液壓動(dong)力單(dan)元型號(hao)規格：