膜片聯軸器在傳遞扭矩的同時通過彈性膜片的的變形來補償軸向和角向的位移，是一種高性能的金屬彈性撓性聯軸器。膜片式聯軸器結構(gou)緊湊(cou)，傳遞扭矩大，使(shi)用壽命(ming)長，免維護，耐高溫，耐酸堿防腐蝕(shi)，適用于高溫高速及有腐蝕(shi)工況環(huan)境的(de)軸系傳動。

膜片(pian)型聯(lian)軸(zhou)器能補(bu)償(chang)主動(dong)機(ji)與從(cong)動(dong)機(ji)之(zhi)間由于制造誤(wu)差、安(an)裝誤(wu)差、承載變形以及(ji)溫(wen)升變化的影響等所引起的軸(zhou)向、徑(jing)向和(he)角向偏(pian)移。膜片(pian)彈(dan)(dan)性(xing)聯(lian)軸(zhou)器屬金屬彈(dan)(dan)性(xing)元件撓性(xing)聯(lian)軸(zhou)器，其依(yi)靠金屬聯(lian)軸(zhou)器膜片(pian)來聯(lian)接主、從(cong)動(dong)機(ji)傳遞扭矩，具有彈(dan)(dan)性(xing)減(jian)振、無(wu)噪聲、不需潤滑(hua)的優點(dian)。

膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器(qi)至(zhi)少由一個膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)和兩(liang)個軸(zhou)套(tao)組成。膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)被用銷釘緊固(gu)在軸(zhou)套(tao)上(shang)一般不會松動或(huo)引起膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)和軸(zhou)套(tao)之間(jian)的(de)(de)(de)反沖。有一些生產商提供兩(liang)個膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)的(de)(de)(de)，也有提供三個膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)的(de)(de)(de)，中間(jian)有一個或(huo)兩(liang)個剛性元件，兩(liang)邊(bian) 再連(lian)在軸(zhou)套(tao)上(shang)。單(dan)(dan)膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器(qi)和雙膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器(qi)的(de)(de)(de)不同(tong)之處(chu)是處(chu)理各種偏差能(neng)力(li)的(de)(de)(de)不同(tong)，鑒于其需要膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)能(neng)復雜的(de)(de)(de)彎曲，所以(yi)單(dan)(dan)膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器(qi)不太適應偏心(xin)(xin)。而雙膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器(qi)可(ke)以(yi)同(tong)時曲向不同(tong)的(de)(de)(de)方向，以(yi)此來補償偏心(xin)(xin)。