電機是驅動電機，減速器是齒輪箱，提供減速、提升扭矩功能；驅動電機通常需要搭載減速器一起使用，這種集合體稱為減速電機，這是一樣應用非常廣泛(fan)的驅動減速(su)設備(bei)，下面分別介紹電(dian)機、減速(su)器、減速(su)電(dian)機的區別。

電(dian)(dian)機(ji)(ji)(ji)(ji)是指是一(yi)種高轉速輸(shu)出的驅動(dong)電(dian)(dian)機(ji)(ji)(ji)(ji)，驅動(dong)電(dian)(dian)機(ji)(ji)(ji)(ji)門類繁多，大(da)體可分為直流(liu)電(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)、交(jiao)流(liu)電(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)、自(zi)態(tai)角電(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)、步進(jin)(jin)電(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)、旋轉變壓器、軸角編碼器、交(jiao)直流(liu)兩用電(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)、測(ce)速發電(dian)(dian)機(ji)(ji)(ji)(ji)、感應同步器、直線(xian)電(dian)(dian)機(ji)(ji)(ji)(ji)、壓電(dian)(dian)電(dian)(dian)動(dong)機(ji)(ji)(ji)(ji)、電(dian)(dian)機(ji)(ji)(ji)(ji)機(ji)(ji)(ji)(ji)組(zu)、其他特種電(dian)(dian)機(ji)(ji)(ji)(ji)等(deng)13大(da)類。驅動(dong)電(dian)(dian)機(ji)(ji)(ji)(ji)綜(zong)合了電(dian)(dian)機(ji)(ji)(ji)(ji)、微電(dian)(dian)子、電(dian)(dian)力電(dian)(dian)子、計算(suan)機(ji)(ji)(ji)(ji)、自(zi)動(dong)控制、精密機(ji)(ji)(ji)(ji)械、新材(cai)料等(deng)多門學科的高新技(ji)術(shu)(shu)(shu)(shu)行業(ye)，尤其是電(dian)(dian)子技(ji)術(shu)(shu)(shu)(shu)和新材(cai)料技(ji)術(shu)(shu)(shu)(shu)的應用促進(jin)(jin)了電(dian)(dian)機(ji)(ji)(ji)(ji)技(ji)術(shu)(shu)(shu)(shu)進(jin)(jin)步。

減(jian)速(su)(su)(su)(su)器(qi)通常(chang)是(shi)指齒(chi)(chi)(chi)輪(lun)(lun)減(jian)速(su)(su)(su)(su)箱，齒(chi)(chi)(chi)輪(lun)(lun)箱內部(bu)(bu)由多個(ge)齒(chi)(chi)(chi)輪(lun)(lun)組組裝而成；減(jian)速(su)(su)(su)(su)器(qi)是(shi)一種(zhong)由封閉(bi)在(zai)剛性殼體內的(de)齒(chi)(chi)(chi)輪(lun)(lun)驅(qu)動(dong)(dong)、蝸桿驅(qu)動(dong)(dong)、齒(chi)(chi)(chi)輪(lun)(lun)-蝸桿驅(qu)動(dong)(dong)所組成的(de)獨(du)立部(bu)(bu)件，常(chang)用作(zuo)原動(dong)(dong)件與工(gong)作(zuo)機之間的(de)減(jian)速(su)(su)(su)(su)驅(qu)動(dong)(dong)裝置(zhi) 。在(zai)原動(dong)(dong)機和(he)工(gong)作(zuo)機或執行機構(gou)之間起匹配轉速(su)(su)(su)(su)和(he)傳遞(di)轉矩的(de)作(zuo)用，在(zai)現代(dai)機械(xie)中應用極為(wei)廣(guang)泛。減(jian)速(su)(su)(su)(su)器(qi)的(de)種(zhong)類(lei)繁多，按(an)照(zhao)驅(qu)動(dong)(dong)類(lei)型(xing)可(ke)分為(wei)齒(chi)(chi)(chi)輪(lun)(lun)減(jian)速(su)(su)(su)(su)器(qi)、蝸桿減(jian)速(su)(su)(su)(su)器(qi)和(he)行星(xing)齒(chi)(chi)(chi)輪(lun)(lun)減(jian)速(su)(su)(su)(su)器(qi)；按(an)照(zhao)驅(qu)動(dong)(dong)級數不同可(ke)分為(wei)單(dan)級和(he)多級減(jian)速(su)(su)(su)(su)器(qi)；按(an)照(zhao)齒(chi)(chi)(chi)輪(lun)(lun)形(xing)狀(zhuang)可(ke)分為(wei)圓(yuan)(yuan)柱齒(chi)(chi)(chi)輪(lun)(lun)減(jian)速(su)(su)(su)(su)器(qi)、圓(yuan)(yuan)錐(zhui)齒(chi)(chi)(chi)輪(lun)(lun)減(jian)速(su)(su)(su)(su)器(qi)和(he)圓(yuan)(yuan)錐(zhui)－圓(yuan)(yuan)柱齒(chi)(chi)(chi)輪(lun)(lun)減(jian)速(su)(su)(su)(su)器(qi)；按(an)照(zhao)驅(qu)動(dong)(dong)的(de)布置(zhi)形(xing)式(shi)(shi)又可(ke)分為(wei)展開式(shi)(shi)減(jian)速(su)(su)(su)(su)器(qi)、分流式(shi)(shi)減(jian)速(su)(su)(su)(su)器(qi)和(he)同軸式(shi)(shi)減(jian)速(su)(su)(su)(su)器(qi)。

減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)是由(you)驅動(dong)電(dian)(dian)機(ji)(ji)、減(jian)(jian)(jian)速(su)(su)(su)器組(zu)裝(zhuang)而成大減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)，具(ju)有輸出低轉速(su)(su)(su)、提升(sheng)扭矩載荷能力的功能。這種減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)通(tong)常也可稱為齒(chi)輪(lun)(lun)馬達或齒(chi)輪(lun)(lun)電(dian)(dian)機(ji)(ji)。通(tong)常由(you)專業的減(jian)(jian)(jian)速(su)(su)(su)機(ji)(ji)生(sheng)產(chan)廠，進行集成組(zu)裝(zhuang)好后，與電(dian)(dian)機(ji)(ji)一體成套(tao)供(gong)貨。減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)按照用途、驅動(dong)電(dian)(dian)機(ji)(ji)類型、減(jian)(jian)(jian)速(su)(su)(su)齒(chi)輪(lun)(lun)箱結(jie)構通(tong)常分為行星減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、齒(chi)輪(lun)(lun)減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、步進減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、直流減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、蝸輪(lun)(lun)蝸桿減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、空心杯(bei)減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、直線減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、微型減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)、精密減(jian)(jian)(jian)速(su)(su)(su)電(dian)(dian)機(ji)(ji)等。