包括推力圓柱滾子軸承、推力圓錐滾子軸承、推力滾針軸承和推力調心滾子軸承。

    軸承（Bearing）是當代(dai)機(ji)械(xie)(xie)設(she)備中一種(zhong)重要(yao)零(ling)部件。它的(de)主(zhu)要(yao)功能是支撐機(ji)械(xie)(xie)旋(xuan)轉體(ti)，降(jiang)低其運動(dong)過(guo)程中的(de)摩擦系數，并保證其回轉精度。

    按運動(dong)元(yuan)件摩擦性(xing)質(zhi)的(de)不(bu)同，軸(zhou)(zhou)承可分為滾(gun)動(dong)軸(zhou)(zhou)承和滑動(dong)軸(zhou)(zhou)承兩大類(lei)。其中(zhong)滾(gun)動(dong)軸(zhou)(zhou)承已(yi)經標準化、系列化，但與滑動(dong)軸(zhou)(zhou)承相比它的(de)徑向尺(chi)寸、振(zhen)動(dong)和噪(zao)聲較大，價(jia)格也較高。

    滾(gun)動軸承(cheng)一(yi)般由外圈、內圈、滾(gun)動體和(he)保(bao)持架四部分組成。按滾(gun)動體的形狀(zhuang)，滾(gun)動軸承(cheng)分為球軸承(cheng)和(he)滾(gun)子軸承(cheng)兩大類。

    早期(qi)的(de)直(zhi)線(xian)運動(dong)軸(zhou)承(cheng)(cheng)形式，就(jiu)是(shi)在一排撬板(ban)下放置一排木桿。現代直(zhi)線(xian)運動(dong)軸(zhou)承(cheng)(cheng)使(shi)用(yong)的(de)是(shi)同一種(zhong)(zhong)工作原理，只(zhi)(zhi)不過有時用(yong)球代替(ti)(ti)滾子(zi)。最簡單(dan)(dan)的(de)旋轉軸(zhou)承(cheng)(cheng)是(shi)軸(zhou)套軸(zhou)承(cheng)(cheng)，它只(zhi)(zhi)是(shi)一個夾在車輪(lun)和輪(lun)軸(zhou)之間的(de)襯套。這種(zhong)(zhong)設計隨后被(bei)滾動(dong)軸(zhou)承(cheng)(cheng)替(ti)(ti)代，就(jiu)是(shi)用(yong)很多圓柱形的(de)滾子(zi)替(ti)(ti)代原先的(de)襯套，每個滾動(dong)體就(jiu)像一個單(dan)(dan)獨(du)的(de)車輪(lun)。

    滾(gun)動軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)按其(qi)所能承(cheng)(cheng)(cheng)(cheng)(cheng)受的(de)載荷方向(xiang)或(huo)公(gong)稱(cheng)接(jie)觸(chu)角(jiao)的(de)不(bu)同(tong)分為(wei)向(xiang)心(xin)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)和推力軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)。其(qi)中徑向(xiang)接(jie)觸(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)公(gong)稱(cheng)接(jie)觸(chu)角(jiao)為(wei)0的(de)向(xiang)心(xin)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)，向(xiang)心(xin)角(jiao)接(jie)觸(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)公(gong)稱(cheng)接(jie)觸(chu)角(jiao)大于0到(dao)45的(de)向(xiang)心(xin)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)。軸(zhou)(zhou)向(xiang)接(jie)觸(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)公(gong)稱(cheng)接(jie)觸(chu)角(jiao)為(wei)90的(de)推力軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)，推力角(jiao)接(jie)觸(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)公(gong)稱(cheng)接(jie)觸(chu)角(jiao)大于45但小于90的(de)推力軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)。

    按滾(gun)動(dong)體的形(xing)狀可分(fen)(fen)為球軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)和(he)(he)滾(gun)子(zi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)。滾(gun)子(zi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)按滾(gun)子(zi)種類(lei)分(fen)(fen)為：圓柱滾(gun)子(zi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)、滾(gun)針軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)、圓錐滾(gun)子(zi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)和(he)(he)調心滾(gun)子(zi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)。

    按其工作時(shi)能(neng)否調(diao)心分為調(diao)心軸(zhou)(zhou)承(cheng)(cheng)----滾道是球面(mian)形的,能(neng)適應(ying)兩滾道軸(zhou)(zhou)心線間的角偏(pian)差(cha)及角運動的軸(zhou)(zhou)承(cheng)(cheng)和非調(diao)心軸(zhou)(zhou)承(cheng)(cheng)(剛性軸(zhou)(zhou)承(cheng)(cheng))----能(neng)阻抗滾道間軸(zhou)(zhou)心線角偏(pian)移的軸(zhou)(zhou)承(cheng)(cheng)。

    按滾動體的列數分(fen)為單列軸(zhou)承、雙列軸(zhou)承和多列軸(zhou)承。

    按其(qi)部(bu)件（套圈）能否分離分為可(ke)分離軸承和不可(ke)分離軸承。

    按其(qi)結構形(xing)(xing)狀(zhuang)(如有(you)無(wu)裝填(tian)槽,有(you)無(wu)內、外圈以及套圈的形(xing)(xing)狀(zhuang),擋邊的結構,甚至有(you)無(wu)保持架等)還(huan)可(ke)以分為多(duo)種結構類型。

    按其外徑尺寸(cun)大小分(fen)為微(wei)型(xing)軸(zhou)承(cheng)(cheng)（<26mm)、小型(xing)軸(zhou)承(cheng)(cheng)（28-55mm）、中小型(xing)軸(zhou)承(cheng)(cheng)（60-115）、中大型(xing)軸(zhou)承(cheng)(cheng)（120-190mm）、大型(xing)軸(zhou)承(cheng)(cheng)（200-430mm）和特大型(xing)軸(zhou)承(cheng)(cheng)（>440mm）。

    按(an)應用領域(yu)分為電機軸承(cheng)(cheng)、軋(ya)機軸承(cheng)(cheng)、主軸承(cheng)(cheng)等(deng)。

    按材料分為陶瓷軸承、塑料軸承等。