一、液壓馬達和電機的區別在哪里

液壓(ya)馬(ma)達(da)和電(dian)(dian)動機最(zui)主要的(de)(de)區別在于動力來源(yuan)不一樣，液壓(ya)馬(ma)達(da)的(de)(de)能量來源(yuan)是液壓(ya)油的(de)(de)壓(ya)力勢能，電(dian)(dian)動機的(de)(de)能量來源(yuan)是電(dian)(dian)勢能。

1、液壓馬達：

液(ye)壓馬達是(shi)液(ye)壓系(xi)統的一種執行元件，它將液(ye)壓泵提供的液(ye)體壓力能(neng)轉(zhuan)變為其輸(shu)出軸的機(ji)械能(neng)（轉(zhuan)矩和轉(zhuan)速(su)）。

液壓馬達(da)亦稱為油馬達(da)，主要應用于注塑機(ji)(ji)(ji)械(xie)(xie)、船(chuan)舶、起揚機(ji)(ji)(ji)、工程機(ji)(ji)(ji)械(xie)(xie)、建筑機(ji)(ji)(ji)械(xie)(xie)、煤礦(kuang)機(ji)(ji)(ji)械(xie)(xie)、礦(kuang)山機(ji)(ji)(ji)械(xie)(xie)、冶金機(ji)(ji)(ji)械(xie)(xie)、船(chuan)舶機(ji)(ji)(ji)械(xie)(xie)、石油化(hua)工、港(gang)口機(ji)(ji)(ji)械(xie)(xie)等。具有(you)體(ti)積小、重量(liang)輕、結構簡單(dan)、工藝性好、對(dui)油液的污染不敏(min)感、耐沖擊和慣性小等優點。缺(que)點有(you)扭(niu)(niu)矩(ju)脈動較(jiao)大、效率較(jiao)低、起動扭(niu)(niu)矩(ju)較(jiao)小（僅為額定(ding)扭(niu)(niu)矩(ju)的60%——70%）和低速穩(wen)定(ding)性差等。

2、電動機：

電(dian)(dian)(dian)動(dong)機（Motor）是把(ba)電(dian)(dian)(dian)能轉(zhuan)換成機械(xie)能的(de)(de)(de)一種設備。它(ta)是利用(yong)通電(dian)(dian)(dian)線圈(quan)（也就是定(ding)子繞(rao)組）產生旋(xuan)轉(zhuan)磁場(chang)(chang)(chang)并作用(yong)于(yu)轉(zhuan)子（如(ru)鼠(shu)籠式(shi)閉合(he)鋁框）形成磁電(dian)(dian)(dian)動(dong)力(li)旋(xuan)轉(zhuan)扭矩。電(dian)(dian)(dian)動(dong)機按使用(yong)電(dian)(dian)(dian)源不(bu)同(tong)分為(wei)直流(liu)(liu)電(dian)(dian)(dian)動(dong)機和交(jiao)流(liu)(liu)電(dian)(dian)(dian)動(dong)機，電(dian)(dian)(dian)力(li)系統中(zhong)的(de)(de)(de)電(dian)(dian)(dian)動(dong)機大(da)部分是交(jiao)流(liu)(liu)電(dian)(dian)(dian)機，可以是同(tong)步電(dian)(dian)(dian)機或(huo)者是異步電(dian)(dian)(dian)機（電(dian)(dian)(dian)機定(ding)子磁場(chang)(chang)(chang)轉(zhuan)速(su)與轉(zhuan)子旋(xuan)轉(zhuan)轉(zhuan)速(su)不(bu)保持同(tong)步速(su)）。電(dian)(dian)(dian)動(dong)機主要(yao)由定(ding)子與轉(zhuan)子組成，通電(dian)(dian)(dian)導線在磁場(chang)(chang)(chang)中(zhong)受(shou)(shou)力(li)運動(dong)的(de)(de)(de)方向(xiang)跟電(dian)(dian)(dian)流(liu)(liu)方向(xiang)和磁感線（磁場(chang)(chang)(chang)方向(xiang)）方向(xiang)有關(guan)。電(dian)(dian)(dian)動(dong)機工作原(yuan)理(li)是磁場(chang)(chang)(chang)對電(dian)(dian)(dian)流(liu)(liu)受(shou)(shou)力(li)的(de)(de)(de)作用(yong)，使電(dian)(dian)(dian)動(dong)機轉(zhuan)動(dong)。

二、液壓馬達可以代替電機使用嗎

液(ye)(ye)壓(ya)馬(ma)達能(neng)否代替電機(ji)要根據實(shi)際(ji)的情(qing)況而(er)定，液(ye)(ye)壓(ya)馬(ma)達的動(dong)力來源也是(shi)(shi)(shi)要靠電機(ji)或(huo)者發(fa)動(dong)機(ji)來提供(gong)動(dong)力來源，通過液(ye)(ye)壓(ya)系統泵閥轉換后才能(neng)驅動(dong)液(ye)(ye)壓(ya)馬(ma)達提供(gong)動(dong)力源。至于是(shi)(shi)(shi)使用(yong)液(ye)(ye)壓(ya)馬(ma)達還(huan)是(shi)(shi)(shi)電機(ji)這(zhe)要根據實(shi)際(ji)的情(qing)況，如果(guo)(guo)需要的扭(niu)矩大(da)就要通過液(ye)(ye)壓(ya)馬(ma)達帶動(dong)，如果(guo)(guo)扭(niu)矩一般就可以通過電機(ji)來驅動(dong)。