一、液壓馬達和電機的區別在哪里

液(ye)壓(ya)馬達和電動(dong)機(ji)最(zui)主要的區別在于(yu)動(dong)力來源(yuan)不(bu)一樣，液(ye)壓(ya)馬達的能量來源(yuan)是液(ye)壓(ya)油的壓(ya)力勢能，電動(dong)機(ji)的能量來源(yuan)是電勢能。

1、液壓馬達：

液(ye)壓馬達是液(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(li)能(neng)轉(zhuan)變(bian)為其輸(shu)出(chu)軸的機械(xie)能(neng)（轉(zhuan)矩和轉(zhuan)速(su)）。

液壓馬達亦稱(cheng)為油馬達，主(zhu)要應用于注塑機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)、船(chuan)舶、起(qi)(qi)揚(yang)機(ji)(ji)(ji)(ji)、工程機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)、建筑機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)、煤礦機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)、礦山機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)、冶金機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)、船(chuan)舶機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)、石油化工、港(gang)口機(ji)(ji)(ji)(ji)械(xie)(xie)(xie)等。具有體積(ji)小、重量輕(qing)、結構簡單、工藝性好、對油液的污染不敏感、耐(nai)沖(chong)擊和(he)慣性小等優點(dian)。缺點(dian)有扭矩(ju)脈動(dong)較(jiao)大、效率較(jiao)低(di)、起(qi)(qi)動(dong)扭矩(ju)較(jiao)小（僅(jin)為額定扭矩(ju)的60%——70%）和(he)低(di)速穩(wen)定性差(cha)等。

2、電動機：

電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)（Motor）是(shi)(shi)把電(dian)(dian)(dian)能(neng)轉(zhuan)(zhuan)(zhuan)換成機(ji)(ji)(ji)械能(neng)的一種設備(bei)。它(ta)是(shi)(shi)利用(yong)通電(dian)(dian)(dian)線(xian)圈（也就是(shi)(shi)定(ding)子(zi)繞組）產生(sheng)旋轉(zhuan)(zhuan)(zhuan)磁(ci)場(chang)并作(zuo)(zuo)(zuo)用(yong)于轉(zhuan)(zhuan)(zhuan)子(zi)（如鼠籠式(shi)閉合(he)鋁框）形成磁(ci)電(dian)(dian)(dian)動(dong)(dong)力(li)旋轉(zhuan)(zhuan)(zhuan)扭(niu)矩。電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)按使用(yong)電(dian)(dian)(dian)源不同(tong)分(fen)為直流(liu)(liu)電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)和交流(liu)(liu)電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)，電(dian)(dian)(dian)力(li)系(xi)統中的電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)大部分(fen)是(shi)(shi)交流(liu)(liu)電(dian)(dian)(dian)機(ji)(ji)(ji)，可(ke)以(yi)是(shi)(shi)同(tong)步(bu)電(dian)(dian)(dian)機(ji)(ji)(ji)或者是(shi)(shi)異步(bu)電(dian)(dian)(dian)機(ji)(ji)(ji)（電(dian)(dian)(dian)機(ji)(ji)(ji)定(ding)子(zi)磁(ci)場(chang)轉(zhuan)(zhuan)(zhuan)速與(yu)轉(zhuan)(zhuan)(zhuan)子(zi)旋轉(zhuan)(zhuan)(zhuan)轉(zhuan)(zhuan)(zhuan)速不保(bao)持同(tong)步(bu)速）。電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)主要由定(ding)子(zi)與(yu)轉(zhuan)(zhuan)(zhuan)子(zi)組成，通電(dian)(dian)(dian)導(dao)線(xian)在磁(ci)場(chang)中受力(li)運動(dong)(dong)的方(fang)向(xiang)跟電(dian)(dian)(dian)流(liu)(liu)方(fang)向(xiang)和磁(ci)感線(xian)（磁(ci)場(chang)方(fang)向(xiang)）方(fang)向(xiang)有關。電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)工(gong)作(zuo)(zuo)(zuo)原理是(shi)(shi)磁(ci)場(chang)對電(dian)(dian)(dian)流(liu)(liu)受力(li)的作(zuo)(zuo)(zuo)用(yong)，使電(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)轉(zhuan)(zhuan)(zhuan)動(dong)(dong)。

二、液壓馬達可以代替電機使用嗎

液(ye)(ye)(ye)壓(ya)馬(ma)(ma)(ma)達(da)(da)能否代替電(dian)機要根(gen)據實際的(de)(de)情況(kuang)(kuang)而定，液(ye)(ye)(ye)壓(ya)馬(ma)(ma)(ma)達(da)(da)的(de)(de)動力(li)來源也是(shi)要靠電(dian)機或者發動機來提(ti)供(gong)動力(li)來源，通(tong)過液(ye)(ye)(ye)壓(ya)系統泵閥轉換后才能驅動液(ye)(ye)(ye)壓(ya)馬(ma)(ma)(ma)達(da)(da)提(ti)供(gong)動力(li)源。至于是(shi)使(shi)用(yong)液(ye)(ye)(ye)壓(ya)馬(ma)(ma)(ma)達(da)(da)還(huan)是(shi)電(dian)機這要根(gen)據實際的(de)(de)情況(kuang)(kuang)，如(ru)果(guo)需(xu)要的(de)(de)扭矩(ju)大就要通(tong)過液(ye)(ye)(ye)壓(ya)馬(ma)(ma)(ma)達(da)(da)帶動，如(ru)果(guo)扭矩(ju)一般就可以(yi)通(tong)過電(dian)機來驅動。