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）是當代機械設備(bei)中一種(zhong)重要零部件。它的主要功能是支撐機械旋(xuan)轉體，降低其(qi)運(yun)動過程中的摩擦系數，并保(bao)證其(qi)回轉精度。

    按運動(dong)(dong)元件摩擦(ca)性質的不同，軸(zhou)承(cheng)可分為滾動(dong)(dong)軸(zhou)承(cheng)和滑(hua)動(dong)(dong)軸(zhou)承(cheng)兩大(da)類。其中滾動(dong)(dong)軸(zhou)承(cheng)已(yi)經標準化(hua)、系列(lie)化(hua)，但(dan)與(yu)滑(hua)動(dong)(dong)軸(zhou)承(cheng)相比它的徑向尺(chi)寸、振動(dong)(dong)和噪聲(sheng)較(jiao)大(da)，價格(ge)也較(jiao)高。

    滾(gun)動軸承(cheng)一般由外圈、內圈、滾(gun)動體和保(bao)持架四部分組(zu)成。按滾(gun)動體的形(xing)狀，滾(gun)動軸承(cheng)分為球軸承(cheng)和滾(gun)子軸承(cheng)兩(liang)大類。

    早期的(de)直線(xian)(xian)運(yun)動(dong)軸(zhou)承(cheng)(cheng)形式，就是(shi)(shi)在(zai)一(yi)排撬板下放置一(yi)排木桿。現(xian)代(dai)(dai)(dai)直線(xian)(xian)運(yun)動(dong)軸(zhou)承(cheng)(cheng)使用的(de)是(shi)(shi)同一(yi)種(zhong)工作原理，只不過有時用球(qiu)代(dai)(dai)(dai)替滾子(zi)。最簡單(dan)的(de)旋(xuan)轉軸(zhou)承(cheng)(cheng)是(shi)(shi)軸(zhou)套軸(zhou)承(cheng)(cheng)，它只是(shi)(shi)一(yi)個(ge)夾在(zai)車(che)輪和(he)輪軸(zhou)之間(jian)的(de)襯套。這種(zhong)設(she)計隨后(hou)被滾動(dong)軸(zhou)承(cheng)(cheng)替代(dai)(dai)(dai)，就是(shi)(shi)用很(hen)多(duo)圓(yuan)柱形的(de)滾子(zi)替代(dai)(dai)(dai)原先的(de)襯套，每個(ge)滾動(dong)體就像一(yi)個(ge)單(dan)獨(du)的(de)車(che)輪。

    滾動(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)按其(qi)所能承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)受的載荷方向(xiang)(xiang)(xiang)或公稱(cheng)接觸(chu)(chu)(chu)角(jiao)(jiao)(jiao)的不同分為(wei)(wei)向(xiang)(xiang)(xiang)心軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)和推(tui)力(li)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)。其(qi)中徑向(xiang)(xiang)(xiang)接觸(chu)(chu)(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)(wei)公稱(cheng)接觸(chu)(chu)(chu)角(jiao)(jiao)(jiao)為(wei)(wei)0的向(xiang)(xiang)(xiang)心軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)，向(xiang)(xiang)(xiang)心角(jiao)(jiao)(jiao)接觸(chu)(chu)(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)(wei)公稱(cheng)接觸(chu)(chu)(chu)角(jiao)(jiao)(jiao)大于(yu)0到45的向(xiang)(xiang)(xiang)心軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)。軸(zhou)(zhou)向(xiang)(xiang)(xiang)接觸(chu)(chu)(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)(wei)公稱(cheng)接觸(chu)(chu)(chu)角(jiao)(jiao)(jiao)為(wei)(wei)90的推(tui)力(li)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)，推(tui)力(li)角(jiao)(jiao)(jiao)接觸(chu)(chu)(chu)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)為(wei)(wei)公稱(cheng)接觸(chu)(chu)(chu)角(jiao)(jiao)(jiao)大于(yu)45但小(xiao)于(yu)90的推(tui)力(li)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)。

    按滾動體的(de)形狀可分為(wei)球軸(zhou)承(cheng)(cheng)(cheng)和(he)滾子(zi)(zi)(zi)(zi)軸(zhou)承(cheng)(cheng)(cheng)。滾子(zi)(zi)(zi)(zi)軸(zhou)承(cheng)(cheng)(cheng)按滾子(zi)(zi)(zi)(zi)種類分為(wei)：圓柱(zhu)滾子(zi)(zi)(zi)(zi)軸(zhou)承(cheng)(cheng)(cheng)、滾針軸(zhou)承(cheng)(cheng)(cheng)、圓錐滾子(zi)(zi)(zi)(zi)軸(zhou)承(cheng)(cheng)(cheng)和(he)調心滾子(zi)(zi)(zi)(zi)軸(zhou)承(cheng)(cheng)(cheng)。

 ;   按其工作時能否調心(xin)分(fen)為(wei)調心(xin)軸承(cheng)----滾道是球面形的(de)(de)(de),能適應兩(liang)滾道軸心(xin)線間的(de)(de)(de)角(jiao)偏(pian)差(cha)及角(jiao)運(yun)動的(de)(de)(de)軸承(cheng)和(he)非(fei)調心(xin)軸承(cheng)(剛(gang)性軸承(cheng))----能阻抗滾道間軸心(xin)線角(jiao)偏(pian)移的(de)(de)(de)軸承(cheng)。

    按滾動(dong)體的列數分為單列軸承、雙(shuang)列軸承和多(duo)列軸承。

    按其部件(jian)（套(tao)圈(quan)）能否分(fen)(fen)離(li)分(fen)(fen)為可分(fen)(fen)離(li)軸(zhou)承(cheng)和不可分(fen)(fen)離(li)軸(zhou)承(cheng)。

    按其結構形(xing)狀(如有無裝填槽,有無內(nei)、外圈(quan)以(yi)及套圈(quan)的形(xing)狀,擋邊的結構,甚至(zhi)有無保(bao)持架等)還(huan)可以(yi)分為(wei)多種結構類型。

    按其(qi)外(wai)徑尺寸大(da)小(xiao)分為(wei)微型(xing)軸(zhou)承(cheng)(cheng)（<26mm)、小(xiao)型(xing)軸(zhou)承(cheng)(cheng)（28-55mm）、中(zhong)小(xiao)型(xing)軸(zhou)承(cheng)(cheng)（60-115）、中(zhong)大(da)型(xing)軸(zhou)承(cheng)(cheng)（120-190mm）、大(da)型(xing)軸(zhou)承(cheng)(cheng)（200-430mm）和特大(da)型(xing)軸(zhou)承(cheng)(cheng)（>440mm）。

&nbsp;   按應(ying)用領域分為電機(ji)軸(zhou)承、軋機(ji)軸(zhou)承、主軸(zhou)承等(deng)。

    按材料分為陶瓷軸承、塑料軸承等。