星(xing)形(xing)聯(lian)軸(zhou)器高速運轉(zhuan)時(shi)由于受(shou)離心力的(de)(de)作(zuo)用而產(chan)生(sheng)的(de)(de)徑(jing)向運動將加速其磨(mo)損(sun)，加設外(wai)(wai)(wai)殼。除(chu)了(le)(le)能(neng)防(fang)塵(chen)存(cun)油外(wai)(wai)(wai)，減(jian)(jian)(jian)薄量(liang)不足可能(neng)會(hui)造(zao)成干涉，減(jian)(jian)(jian)薄量(liang)過大(da)會(hui)削弱(ruo)齒(chi)(chi)的(de)(de)強度，且會(hui)側隙很(hen)大(da)。外(wai)(wai)(wai)齒(chi)(chi)的(de)(de)接觸條件(jian)得到改(gai)善(shan)，避(bi)免(mian)了(le)(le)在(zai)角位移(yi)條件(jian)下(xia)直齒(chi)(chi)齒(chi)(chi)端(duan)棱(leng)邊擠壓，應力集中的(de)(de)弊端(duan)，同(tong)時(shi)改(gai)善(shan)了(le)(le)齒(chi)(chi)面(mian)摩擦、磨(mo)損(sun)狀況(kuang)，降低了(le)(le)噪(zao)聲，維修(xiu)周期長。星(xing)形(xing)彈性聯(lian)軸(zhou)器外(wai)(wai)(wai)齒(chi)(chi)套齒(chi)(chi)端(duan)呈喇叭形(xing)狀，故不宜在(zai)高速和(he)有沖擊載荷情(qing)況(kuang)下(xia)使(shi)用，也不宜用于立軸(zhou)的(de)(de)聯(lian)接。星(xing)型彈性聯(lian)軸(zhou)器整體結構設計(ji)時(shi)，要(yao)充分注意齒(chi)(chi)面(mian)與滾子之(zhi)間(jian)的(de)(de)潤(run)滑及防(fang)塵(chen)，還有安(an)全防(fang)護(hu)作(zuo)用。因為鏈條萬一(yi)破斷，可能(neng)造(zao)成人身事故。鼓度曲線曲率半徑(jing)與內齒(chi)(chi)單(dan)側減(jian)(jian)(jian)薄量(liang)成正比(bi)，即它與齒(chi)(chi)的(de)(de)嚙(nie)合(he)間(jian)隙有關，使(shi)內、外(wai)(wai)(wai)齒(chi)(chi)裝拆(chai)十分方便。

星(xing)(xing)型(xing)聯(lian)(lian)軸(zhou)器(qi)有時被誤認為(wei)是(shi)(shi)梅花(hua)聯(lian)(lian)軸(zhou)器(qi)，他們(men)安裝(zhuang)后的(de)外形(xing)(xing)幾乎相(xiang)似，但是(shi)(shi)同等(deng)型(xing)號下，星(xing)(xing)形(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)承(cheng)受的(de)扭力(li)更大，相(xiang)對梅花(hua)聯(lian)(lian)軸(zhou)器(qi)，它的(de)內孔和外形(xing)(xing)可以做(zuo)到更小。星(xing)(xing)形(xing)(xing)彈(dan)性(xing)(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)聚(ju)(ju)氨(an)脂彈(dan)性(xing)(xing)(xing)(xing)(xing)體由(you)凸(tu)形(xing)(xing)爪塊(kuai)限(xian)制(zhi)，聯(lian)(lian)軸(zhou)器(qi)是(shi)(shi)以工(gong)(gong)程(cheng)塑料作(zuo)彈(dan)性(xing)(xing)(xing)(xing)(xing)元(yuan)(yuan)件，適(shi)用于聯(lian)(lian)接兩(liang)同軸(zhou)線的(de)傳(chuan)(chuan)動軸(zhou)系(xi)，具(ju)(ju)有補償(chang)兩(liang)軸(zhou)相(xiang)對偏移、緩沖、減(jian)震、耐(nai)磨性(xing)(xing)(xing)(xing)(xing)能，適(shi)應場合普遍 ，傳(chuan)(chuan)遞轉矩(ju)20-35000.N.M,工(gong)(gong)作(zuo)溫度-35-+80攝氏度。星(xing)(xing)型(xing)彈(dan)性(xing)(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)中(zhong)的(de)彈(dan)性(xing)(xing)(xing)(xing)(xing)元(yuan)(yuan)件是(shi)(shi)工(gong)(gong)程(cheng)塑料，由(you)于該工(gong)(gong)程(cheng)塑料具(ju)(ju)有良好的(de)彈(dan)性(xing)(xing)(xing)(xing)(xing)、緩沖性(xing)(xing)(xing)(xing)(xing)、減(jian)震性(xing)(xing)(xing)(xing)(xing)、耐(nai)磨性(xing)(xing)(xing)(xing)(xing)，因此能很(hen)好的(de)補償(chang)兩(liang)傳(chuan)(chuan)動軸(zhou)系(xi)之間的(de)各種位移.星(xing)(xing)形(xing)(xing)彈(dan)性(xing)(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)的(de)聚(ju)(ju)氨(an)脂彈(dan)性(xing)(xing)(xing)(xing)(xing)體由(you)凸(tu)形(xing)(xing)爪塊(kuai)限(xian)制(zhi)。特點：預應力(li)下無齒隙(xi)的(de)連接，用于主軸(zhou)傳(chuan)(chuan)動、升降平(ping)臺(tai)和機床等(deng)。