型號：23180M8W33（3053780k）

    規格：400*650*200

    軸承（Bearing）是當(dang)代機械設備(bei)中(zhong)一(yi)種重要零部件。它的(de)主要功能是支撐機械旋(xuan)轉(zhuan)(zhuan)體，降低其(qi)運(yun)動過程中(zhong)的(de)摩(mo)擦系數，并保證(zheng)其(qi)回轉(zhuan)(zhuan)精度。

    按運動(dong)(dong)元(yuan)件摩(mo)擦性質(zhi)的不同，軸承(cheng)(cheng)可分(fen)為滾動(dong)(dong)軸承(cheng)(cheng)和滑(hua)(hua)動(dong)(dong)軸承(cheng)(cheng)兩(liang)大類。其(qi)中滾動(dong)(dong)軸承(cheng)(cheng)已經標(biao)準化、系列化，但與(yu)滑(hua)(hua)動(dong)(dong)軸承(cheng)(cheng)相比它的徑向尺寸(cun)、振動(dong)(dong)和噪聲較(jiao)大，價格也較(jiao)高。

    滾動軸承(cheng)(cheng)一般(ban)由外圈、內(nei)圈、滾動體(ti)和保持架四部(bu)分組成。按(an)滾動體(ti)的形狀(zhuang)，滾動軸承(cheng)(cheng)分為球軸承(cheng)(cheng)和滾子軸承(cheng)(cheng)兩大類。

    早期的(de)直(zhi)線運(yun)動(dong)(dong)軸承(cheng)形式(shi)，就(jiu)(jiu)是(shi)(shi)(shi)在(zai)一排撬(qiao)板下放(fang)置一排木桿。現(xian)代(dai)直(zhi)線運(yun)動(dong)(dong)軸承(cheng)使用(yong)(yong)的(de)是(shi)(shi)(shi)同一種工(gong)作原理，只(zhi)不過有時用(yong)(yong)球代(dai)替(ti)(ti)滾(gun)子(zi)。最簡單(dan)的(de)旋轉軸承(cheng)是(shi)(shi)(shi)軸套軸承(cheng)，它(ta)只(zhi)是(shi)(shi)(shi)一個(ge)(ge)夾在(zai)車輪(lun)和輪(lun)軸之間的(de)襯套。這種設計隨后被(bei)滾(gun)動(dong)(dong)軸承(cheng)替(ti)(ti)代(dai)，就(jiu)(jiu)是(shi)(shi)(shi)用(yong)(yong)很多圓(yuan)柱形的(de)滾(gun)子(zi)替(ti)(ti)代(dai)原先的(de)襯套，每個(ge)(ge)滾(gun)動(dong)(dong)體就(jiu)(jiu)像一個(ge)(ge)單(dan)獨(du)的(de)車輪(lun)。

    調心滾子軸承有兩(liang)列(lie)對稱型球面滾(gun)子，主要承(cheng)(cheng)(cheng)(cheng)(cheng)受徑向(xiang)載荷，同時(shi)也能承(cheng)(cheng)(cheng)(cheng)(cheng)受任(ren)一方向(xiang)的(de)軸(zhou)(zhou)向(xiang)載荷，但不(bu)(bu)能承(cheng)(cheng)(cheng)(cheng)(cheng)受純軸(zhou)(zhou)向(xiang)載荷。該類(lei)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)外(wai)圈(quan)滾(gun)道是(shi)球面形，故(gu)其調(diao)心性(xing)能良(liang)好，能補償同軸(zhou)(zhou)度(du)誤差，當軸(zhou)(zhou)受力(li)彎曲(qu)或(huo)安裝(zhuang)不(bu)(bu)同心時(shi)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)仍可(ke)正常使(shi)用，調(diao)心性(xing)隨軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)尺寸(cun)系列(lie)不(bu)(bu)同而異(yi)，一般所允許的(de)調(diao)心角(jiao)度(du)為1~2.5度(du) ，該類(lei)型軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)的(de)負(fu)荷能力(li)較(jiao)大(da)，除能承(cheng)(cheng)(cheng)(cheng)(cheng)受徑向(xiang)負(fu)荷外(wai)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)還(huan)能承(cheng)(cheng)(cheng)(cheng)(cheng)受雙向(xiang)作用的(de)軸(zhou)(zhou)向(xiang)負(fu)荷，具有較(jiao)好的(de)抗沖擊能力(li)，一般來說(shuo)調(diao)心滾(gun)子軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)所允許的(de)工作轉速較(jiao)低。適用于(yu)重載或(huo)振(zhen)動載荷下工作。