星形聯軸(zhou)器高(gao)速運轉時(shi)由于受(shou)離心(xin)力(li)的(de)作用(yong)而產生的(de)徑(jing)向運動將加速其磨損，加設外殼。除(chu)了能防(fang)(fang)塵存油(you)外，減(jian)薄量不(bu)足可能會(hui)造成干涉，減(jian)薄量過大會(hui)削弱齒(chi)(chi)(chi)(chi)的(de)強度(du)，且會(hui)側隙(xi)(xi)很大。外齒(chi)(chi)(chi)(chi)的(de)接(jie)觸條件得到(dao)改(gai)善，避(bi)免了在(zai)角位(wei)移條件下直齒(chi)(chi)(chi)(chi)齒(chi)(chi)(chi)(chi)端棱邊擠壓，應力(li)集中的(de)弊端，同時(shi)改(gai)善了齒(chi)(chi)(chi)(chi)面摩(mo)擦、磨損狀況，降(jiang)低了噪聲，維修周(zhou)期(qi)長(chang)。星形彈性聯軸(zhou)器外齒(chi)(chi)(chi)(chi)套齒(chi)(chi)(chi)(chi)端呈喇叭形狀，故(gu)不(bu)宜在(zai)高(gao)速和有沖擊載荷情(qing)況下使用(yong)，也不(bu)宜用(yong)于立(li)軸(zhou)的(de)聯接(jie)。星型(xing)彈性聯軸(zhou)器整體結構設計時(shi)，要(yao)充分(fen)注意齒(chi)(chi)(chi)(chi)面與滾子之(zhi)間(jian)的(de)潤滑及防(fang)(fang)塵，還(huan)有安全(quan)防(fang)(fang)護作用(yong)。因為鏈條萬一破斷(duan)，可能造成人(ren)身事故(gu)。鼓度(du)曲線曲率半徑(jing)與內(nei)齒(chi)(chi)(chi)(chi)單側減(jian)薄量成正比，即它與齒(chi)(chi)(chi)(chi)的(de)嚙合間(jian)隙(xi)(xi)有關，使內(nei)、外齒(chi)(chi)(chi)(chi)裝拆十(shi)分(fen)方便。

星(xing)(xing)型(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)有(you)(you)時被誤認為是梅(mei)花(hua)(hua)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)，他們(men)安裝后的(de)(de)(de)外(wai)(wai)形幾(ji)乎(hu)相(xiang)似，但是同等型(xing)號下，星(xing)(xing)形聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)承(cheng)受的(de)(de)(de)扭力更大，相(xiang)對梅(mei)花(hua)(hua)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)，它的(de)(de)(de)內(nei)孔(kong)和外(wai)(wai)形可(ke)以做到更小(xiao)。星(xing)(xing)形彈性(xing)(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)聚氨脂(zhi)彈性(xing)(xing)(xing)體由凸形爪塊限制(zhi)，聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)是以工程(cheng)塑(su)(su)料(liao)作(zuo)(zuo)彈性(xing)(xing)(xing)元(yuan)件，適用于聯(lian)(lian)(lian)(lian)接兩(liang)同軸(zhou)(zhou)線的(de)(de)(de)傳(chuan)動軸(zhou)(zhou)系，具有(you)(you)補償(chang)兩(liang)軸(zhou)(zhou)相(xiang)對偏移、緩(huan)沖、減震、耐磨(mo)性(xing)(xing)(xing)能(neng)，適應場(chang)合普遍 ，傳(chuan)遞(di)轉矩20-35000.N.M,工作(zuo)(zuo)溫度(du)(du)-35-+80攝氏度(du)(du)。星(xing)(xing)型(xing)彈性(xing)(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)中的(de)(de)(de)彈性(xing)(xing)(xing)元(yuan)件是工程(cheng)塑(su)(su)料(liao)，由于該工程(cheng)塑(su)(su)料(liao)具有(you)(you)良好(hao)的(de)(de)(de)彈性(xing)(xing)(xing)、緩(huan)沖性(xing)(xing)(xing)、減震性(xing)(xing)(xing)、耐磨(mo)性(xing)(xing)(xing)，因此(ci)能(neng)很好(hao)的(de)(de)(de)補償(chang)兩(liang)傳(chuan)動軸(zhou)(zhou)系之間的(de)(de)(de)各種位移.星(xing)(xing)形彈性(xing)(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)(qi)的(de)(de)(de)聚氨脂(zhi)彈性(xing)(xing)(xing)體由凸形爪塊限制(zhi)。特點：預應力下無齒隙的(de)(de)(de)連接，用于主(zhu)軸(zhou)(zhou)傳(chuan)動、升降(jiang)平臺和機床等。