星(xing)形聯(lian)軸器高(gao)速運轉時由于受離(li)心力的(de)(de)作用(yong)而產生的(de)(de)徑(jing)向運動將(jiang)加速其(qi)磨損(sun)，加設外(wai)殼。除(chu)了(le)能(neng)防(fang)(fang)塵存油外(wai)，減(jian)薄(bo)(bo)量不(bu)足可能(neng)會(hui)造成(cheng)干涉，減(jian)薄(bo)(bo)量過大會(hui)削弱齒(chi)(chi)(chi)的(de)(de)強度，且會(hui)側(ce)隙(xi)很大。外(wai)齒(chi)(chi)(chi)的(de)(de)接(jie)觸(chu)條件得到改(gai)(gai)善，避免了(le)在角位(wei)移條件下直齒(chi)(chi)(chi)齒(chi)(chi)(chi)端棱邊(bian)擠壓(ya)，應力集中的(de)(de)弊端，同時改(gai)(gai)善了(le)齒(chi)(chi)(chi)面(mian)摩擦(ca)、磨損(sun)狀(zhuang)況，降低了(le)噪聲，維修周期(qi)長。星(xing)形彈(dan)(dan)性聯(lian)軸器外(wai)齒(chi)(chi)(chi)套齒(chi)(chi)(chi)端呈喇叭形狀(zhuang)，故(gu)不(bu)宜在高(gao)速和有(you)沖(chong)擊載荷(he)情況下使(shi)(shi)用(yong)，也不(bu)宜用(yong)于立(li)軸的(de)(de)聯(lian)接(jie)。星(xing)型(xing)彈(dan)(dan)性聯(lian)軸器整體結構設計時，要(yao)充(chong)分注意(yi)齒(chi)(chi)(chi)面(mian)與滾子之間的(de)(de)潤滑及防(fang)(fang)塵，還有(you)安(an)全(quan)防(fang)(fang)護作用(yong)。因為(wei)鏈條萬一(yi)破斷，可能(neng)造成(cheng)人身事(shi)故(gu)。鼓度曲線曲率半(ban)徑(jing)與內齒(chi)(chi)(chi)單側(ce)減(jian)薄(bo)(bo)量成(cheng)正(zheng)比，即它(ta)與齒(chi)(chi)(chi)的(de)(de)嚙合(he)間隙(xi)有(you)關，使(shi)(shi)內、外(wai)齒(chi)(chi)(chi)裝拆十分方便。

星(xing)型(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)有(you)時被誤(wu)認為是梅(mei)花(hua)(hua)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)，他們安裝后(hou)的(de)(de)外形(xing)(xing)幾乎相(xiang)似，但是同(tong)等型(xing)號(hao)下，星(xing)形(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)承受(shou)的(de)(de)扭(niu)力更大(da)，相(xiang)對梅(mei)花(hua)(hua)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)，它的(de)(de)內孔和(he)外形(xing)(xing)可以做到更小。星(xing)形(xing)(xing)彈(dan)性(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)聚(ju)氨脂彈(dan)性(xing)體由(you)凸(tu)形(xing)(xing)爪塊(kuai)限制，聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)是以工(gong)程塑料作彈(dan)性(xing)元件，適(shi)用(yong)于聯(lian)(lian)(lian)(lian)接(jie)兩同(tong)軸(zhou)(zhou)(zhou)(zhou)線的(de)(de)傳(chuan)動(dong)軸(zhou)(zhou)(zhou)(zhou)系(xi)，具(ju)(ju)有(you)補償兩軸(zhou)(zhou)(zhou)(zhou)相(xiang)對偏移(yi)、緩沖、減震(zhen)、耐磨性(xing)能，適(shi)應場合普遍 ，傳(chuan)遞(di)轉矩20-35000.N.M,工(gong)作溫度-35-+80攝氏度。星(xing)型(xing)彈(dan)性(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)中的(de)(de)彈(dan)性(xing)元件是工(gong)程塑料，由(you)于該工(gong)程塑料具(ju)(ju)有(you)良好(hao)的(de)(de)彈(dan)性(xing)、緩沖性(xing)、減震(zhen)性(xing)、耐磨性(xing)，因此能很(hen)好(hao)的(de)(de)補償兩傳(chuan)動(dong)軸(zhou)(zhou)(zhou)(zhou)系(xi)之(zhi)間的(de)(de)各種位(wei)移(yi).星(xing)形(xing)(xing)彈(dan)性(xing)聯(lian)(lian)(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)(qi)(qi)的(de)(de)聚(ju)氨脂彈(dan)性(xing)體由(you)凸(tu)形(xing)(xing)爪塊(kuai)限制。特點：預應力下無齒隙(xi)的(de)(de)連接(jie)，用(yong)于主軸(zhou)(zhou)(zhou)(zhou)傳(chuan)動(dong)、升降平(ping)臺和(he)機床(chuang)等。