回(hui)(hui)(hui)轉(zhuan)式減(jian)速(su)器，是(shi)一(yi)種(zhong)集成(cheng)了驅(qu)動(dong)(dong)動(dong)(dong)力(li)源的(de)全(quan)周回(hui)(hui)(hui)轉(zhuan)減(jian)速(su)傳(chuan)動(dong)(dong)機(ji)構(gou)，它以回(hui)(hui)(hui)轉(zhuan)支承作(zuo)為傳(chuan)動(dong)(dong)從動(dong)(dong)件(jian)和(he)機(ji)構(gou)附著件(jian)，通(tong)過在回(hui)(hui)(hui)轉(zhuan)支承內外(wai)圈中的(de)一(yi)個圈上附著主(zhu)(zhu)動(dong)(dong)件(jian)、驅(qu)動(dong)(dong)源和(he)罩殼，而(er)把(ba)另一(yi)個圈既當作(zuo)傳(chuan)動(dong)(dong)從動(dong)(dong)件(jian)，又作(zuo)為被(bei)驅(qu)動(dong)(dong)工作(zuo)部件(jian)的(de)連接(jie)基(ji)座，這樣(yang)利用回(hui)(hui)(hui)轉(zhuan)支承本身就是(shi)全(quan)周回(hui)(hui)(hui)轉(zhuan)連接(jie)件(jian)的(de)特點(dian)，高效配置驅(qu)動(dong)(dong)動(dong)(dong)力(li)源和(he)主(zhu)(zhu)傳(chuan)動(dong)(dong)零(ling)件(jian)，使之(zhi)成(cheng)為一(yi)種(zhong)集回(hui)(hui)(hui)轉(zhuan)、減(jian)速(su)和(he)驅(qu)動(dong)(dong)功能于一(yi)體而(er)同時又結構(gou)簡單，制造和(he)維護方便的(de)通(tong)用型減(jian)速(su)傳(chuan)動(dong)(dong)機(ji)構(gou)。