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　齒輪減速電機滾動(dong)軸(zhou)承密(mi)封設計要領：

軸(zhou)伸端密封(feng)(feng)(feng)方式有(you)接觸(chu)(chu)式和非接觸(chu)(chu)式兩(liang)種(zhong)，橡膠油(you)封(feng)(feng)(feng)是(shi)(shi)接觸(chu)(chu)式密封(feng)(feng)(feng)中(zhong)性能(neng)較好的(de)(de)種(zhong)，可用于(yu)(yu)油(you)或(huo)脂(zhi)潤(run)滑(hua)的(de)(de)軸(zhou)承中(zhong)，要求軸(zhou)頸(jing)圓周速(su)度小于(yu)(yu)7米(mi)每(mei)秒，J型橡膠油(you)封(feng)(feng)(feng)裝(zhuang)(zhuang)置有(you)兩(liang)種(zhong)功能(neng)用途：以齒輪減(jian)速(su)機防漏油(you)為主時(shi)，油(you)封(feng)(feng)(feng)唇邊對著箱內;以防外界灰塵(chen)、雜質(zhi)為主時(shi)，唇邊對著箱外。當兩(liang)油(you)封(feng)(feng)(feng)相背放置時(shi)，防漏防塵(chen)能(neng)力都好。毛氈圈(quan)防漏的(de)(de)原理是(shi)(shi)矩形(xing)(xing)斷面的(de)(de)毛氈圈(quan)被安裝(zhuang)(zhuang)在(zai)梯形(xing)(xing)槽內，靠(kao)其對軸(zhou)產生(sheng)的(de)(de)壓(ya)力來(lai)密封(feng)(feng)(feng)，適(shi)(shi)用于(yu)(yu)脂(zhi)潤(run)滑(hua)，要求軸(zhou)頸(jing)圓周速(su)度不(bu)大于(yu)(yu)5米(mi)每(mei)秒，齒輪減(jian)速(su)電機在(zai)接觸(chu)(chu)式密封(feng)(feng)(feng)中(zhong)它壽命較低，密封(feng)(feng)(feng)性能(neng)較差，但簡單、經濟，適(shi)(shi)用于(yu)(yu)脂(zhi)潤(run)滑(hua)軸(zhou)承中(zhong)。非接觸(chu)(chu)式密封(feng)(feng)(feng)主要有(you)間(jian)(jian)隙(xi)(xi)密封(feng)(feng)(feng)和迷(mi)宮(gong)(gong)式密封(feng)(feng)(feng)，間(jian)(jian)隙(xi)(xi)密封(feng)(feng)(feng)主要適(shi)(shi)用于(yu)(yu)脂(zhi)潤(run)滑(hua)，它是(shi)(shi)靠(kao)軸(zhou)與蓋間(jian)(jian)的(de)(de)細小環形(xing)(xing)間(jian)(jian)隙(xi)(xi)密封(feng)(feng)(feng)，間(jian)(jian)隙(xi)(xi)愈(yu)小愈(yu)長，效果愈(yu)好。間(jian)(jian)隙(xi)(xi)通常(chang)取(qu)0.1-0.3毫米(mi)。迷(mi)宮(gong)(gong)式密封(feng)(feng)(feng)適(shi)(shi)用于(yu)(yu)脂(zhi)潤(run)滑(hua)或(huo)油(you)潤(run)滑(hua)，將旋轉件(jian)與靜止(zhi)件(jian)之間(jian)(jian)的(de)(de)間(jian)(jian)隙(xi)(xi)做成迷(mi)宮(gong)(gong)(曲格)形(xing)(xing)式，并在(zai)間(jian)(jian)隙(xi)(xi)中(zhong)充填潤(run)滑(hua)油(you)或(huo)潤(run)滑(hua)脂(zhi)以加(jia)強密封(feng)(feng)(feng)效果。