型號(hao)：23180M8W33（3053780k）

    規格：400*650*200

    軸承（Bearing）是(shi)當代機(ji)械設(she)備(bei)中(zhong)一種(zhong)重要(yao)零部(bu)件。它的(de)主要(yao)功能是(shi)支撐機(ji)械旋轉體，降低其運動(dong)過(guo)程中(zhong)的(de)摩擦系數(shu)，并保(bao)證其回轉精度。

    按運動元(yuan)件摩擦性質(zhi)的(de)不同，軸承(cheng)(cheng)(cheng)可分(fen)為滾(gun)動軸承(cheng)(cheng)(cheng)和滑動軸承(cheng)(cheng)(cheng)兩大類。其中滾(gun)動軸承(cheng)(cheng)(cheng)已(yi)經標準(zhun)化(hua)、系列化(hua)，但與滑動軸承(cheng)(cheng)(cheng)相(xiang)比它的(de)徑(jing)向尺寸、振動和噪聲(sheng)較(jiao)大，價格也較(jiao)高。

    滾(gun)(gun)動軸承一般由外(wai)圈(quan)、內圈(quan)、滾(gun)(gun)動體(ti)和保持(chi)架四部分組成。按滾(gun)(gun)動體(ti)的形狀，滾(gun)(gun)動軸承分為球軸承和滾(gun)(gun)子軸承兩大類。

    早期的(de)直線運(yun)動(dong)軸(zhou)承形(xing)式，就(jiu)是在一排(pai)撬板(ban)下放(fang)置一排(pai)木(mu)桿。現代直線運(yun)動(dong)軸(zhou)承使用(yong)的(de)是同(tong)一種工(gong)作原理，只不過有(you)時用(yong)球(qiu)代替(ti)(ti)滾子(zi)。最簡單(dan)的(de)旋轉(zhuan)軸(zhou)承是軸(zhou)套軸(zhou)承，它只是一個(ge)夾在車輪(lun)和輪(lun)軸(zhou)之間的(de)襯套。這種設計隨后被滾動(dong)軸(zhou)承替(ti)(ti)代，就(jiu)是用(yong)很多圓柱形(xing)的(de)滾子(zi)替(ti)(ti)代原先(xian)的(de)襯套，每個(ge)滾動(dong)體(ti)就(jiu)像一個(ge)單(dan)獨的(de)車輪(lun)。

    調心滾子軸承有(you)兩(liang)列對稱型(xing)球(qiu)面滾(gun)子(zi)，主(zhu)要承(cheng)(cheng)(cheng)(cheng)(cheng)受(shou)(shou)徑向(xiang)(xiang)(xiang)載(zai)(zai)荷(he)，同(tong)(tong)時也能(neng)(neng)(neng)(neng)承(cheng)(cheng)(cheng)(cheng)(cheng)受(shou)(shou)任一方向(xiang)(xiang)(xiang)的(de)軸(zhou)向(xiang)(xiang)(xiang)載(zai)(zai)荷(he)，但不能(neng)(neng)(neng)(neng)承(cheng)(cheng)(cheng)(cheng)(cheng)受(shou)(shou)純(chun)軸(zhou)向(xiang)(xiang)(xiang)載(zai)(zai)荷(he)。該(gai)類軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)外(wai)圈滾(gun)道是球(qiu)面形(xing)，故其(qi)調(diao)(diao)心(xin)(xin)性能(neng)(neng)(neng)(neng)良好(hao)，能(neng)(neng)(neng)(neng)補(bu)償同(tong)(tong)軸(zhou)度(du)誤差，當軸(zhou)受(shou)(shou)力(li)(li)(li)彎曲(qu)或安(an)裝不同(tong)(tong)心(xin)(xin)時軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)仍(reng)可(ke)正常使(shi)用，調(diao)(diao)心(xin)(xin)性隨(sui)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)尺寸系列不同(tong)(tong)而(er)異，一般(ban)所允許的(de)調(diao)(diao)心(xin)(xin)角度(du)為1~2.5度(du) ，該(gai)類型(xing)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)的(de)負荷(he)能(neng)(neng)(neng)(neng)力(li)(li)(li)較(jiao)大，除(chu)能(neng)(neng)(neng)(neng)承(cheng)(cheng)(cheng)(cheng)(cheng)受(shou)(shou)徑向(xiang)(xiang)(xiang)負荷(he)外(wai)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)還能(neng)(neng)(neng)(neng)承(cheng)(cheng)(cheng)(cheng)(cheng)受(shou)(shou)雙向(xiang)(xiang)(xiang)作用的(de)軸(zhou)向(xiang)(xiang)(xiang)負荷(he)，具有(you)較(jiao)好(hao)的(de)抗沖擊能(neng)(neng)(neng)(neng)力(li)(li)(li)，一般(ban)來(lai)說調(diao)(diao)心(xin)(xin)滾(gun)子(zi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)所允許的(de)工作轉速較(jiao)低。適用于(yu)重載(zai)(zai)或振動載(zai)(zai)荷(he)下(xia)工作。