一、液壓馬達和電機的區別在哪里

液壓(ya)馬(ma)達和電動(dong)機最(zui)主要的區別在(zai)于動(dong)力來(lai)源不一樣(yang)，液壓(ya)馬(ma)達的能量來(lai)源是液壓(ya)油的壓(ya)力勢(shi)能，電動(dong)機的能量來(lai)源是電勢(shi)能。

1、液壓馬達：

液(ye)(ye)(ye)壓馬達是液(ye)(ye)(ye)壓系(xi)統的一種執行元(yuan)件，它將液(ye)(ye)(ye)壓泵提供的液(ye)(ye)(ye)體壓力能轉(zhuan)(zhuan)變為其輸出(chu)軸的機械能（轉(zhuan)(zhuan)矩(ju)和(he)轉(zhuan)(zhuan)速）。

液壓(ya)馬達亦(yi)稱為油(you)馬達，主要應用于注塑機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)、船舶、起揚機(ji)(ji)(ji)、工程機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)、建筑機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)、煤(mei)礦機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)、礦山機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)、冶金機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)、船舶機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)、石(shi)油(you)化工、港口機(ji)(ji)(ji)械(xie)(xie)(xie)(xie)等。具(ju)有體積小、重量輕(qing)、結構簡單、工藝性好、對油(you)液的污染不(bu)敏感、耐沖(chong)擊和慣性小等優點(dian)。缺(que)點(dian)有扭矩脈動(dong)較(jiao)(jiao)大(da)、效率較(jiao)(jiao)低、起動(dong)扭矩較(jiao)(jiao)小（僅為額定扭矩的60%——70%）和低速穩定性差等。

2、電動機：

電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)（Motor）是(shi)(shi)(shi)把電(dian)(dian)(dian)(dian)(dian)能轉(zhuan)(zhuan)(zhuan)換成(cheng)機(ji)(ji)械能的(de)(de)一種(zhong)設(she)備。它是(shi)(shi)(shi)利(li)用(yong)通(tong)電(dian)(dian)(dian)(dian)(dian)線圈（也就是(shi)(shi)(shi)定子(zi)繞(rao)組）產(chan)生旋轉(zhuan)(zhuan)(zhuan)磁場并(bing)作用(yong)于轉(zhuan)(zhuan)(zhuan)子(zi)（如(ru)鼠籠式閉合鋁框）形成(cheng)磁電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)力(li)(li)旋轉(zhuan)(zhuan)(zhuan)扭矩。電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)按使用(yong)電(dian)(dian)(dian)(dian)(dian)源不同(tong)(tong)分為直流(liu)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)和交流(liu)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)，電(dian)(dian)(dian)(dian)(dian)力(li)(li)系統中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)大(da)部分是(shi)(shi)(shi)交流(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)，可以是(shi)(shi)(shi)同(tong)(tong)步(bu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)或者是(shi)(shi)(shi)異步(bu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)（電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)定子(zi)磁場轉(zhuan)(zhuan)(zhuan)速與轉(zhuan)(zhuan)(zhuan)子(zi)旋轉(zhuan)(zhuan)(zhuan)轉(zhuan)(zhuan)(zhuan)速不保持同(tong)(tong)步(bu)速）。電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)主要由定子(zi)與轉(zhuan)(zhuan)(zhuan)子(zi)組成(cheng)，通(tong)電(dian)(dian)(dian)(dian)(dian)導線在磁場中(zhong)受(shou)(shou)力(li)(li)運動(dong)(dong)的(de)(de)方向跟電(dian)(dian)(dian)(dian)(dian)流(liu)方向和磁感(gan)線（磁場方向）方向有關。電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)工作原(yuan)理是(shi)(shi)(shi)磁場對(dui)電(dian)(dian)(dian)(dian)(dian)流(liu)受(shou)(shou)力(li)(li)的(de)(de)作用(yong)，使電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)轉(zhuan)(zhuan)(zhuan)動(dong)(dong)。

二、液壓馬達可以代替電機使用嗎

液壓(ya)馬達(da)(da)能否代替電(dian)機(ji)要根據(ju)實際的(de)情(qing)況而定，液壓(ya)馬達(da)(da)的(de)動力來源也是要靠(kao)電(dian)機(ji)或(huo)者發動機(ji)來提供動力來源，通過液壓(ya)系統泵(beng)閥轉換(huan)后才(cai)能驅(qu)動液壓(ya)馬達(da)(da)提供動力源。至于是使(shi)用液壓(ya)馬達(da)(da)還(huan)是電(dian)機(ji)這要根據(ju)實際的(de)情(qing)況，如果(guo)需(xu)要的(de)扭矩大就要通過液壓(ya)馬達(da)(da)帶動，如果(guo)扭矩一(yi)般就可以通過電(dian)機(ji)來驅(qu)動。