在常溫和靜止狀態時(shi)它象(xiang)固體，能(neng)保持(chi)自(zi)己的(de)(de)(de)形狀而(er)不流動(dong)，能(neng)粘(zhan)附在金屬上而(er)不滑(hua)落。在高溫或受(shou)到(dao)超(chao)過一定(ding)限(xian)度的(de)(de)(de)外力時(shi)，它又象(xiang)液(ye)體能(neng)產(chan)生流動(dong)。潤(run)滑(hua)脂在機械中(zhong)受(shou)到(dao)運(yun)動(dong)部(bu)件的(de)(de)(de)剪切作用時(shi)，它能(neng)產(chan)生流動(dong)并進(jin)行潤(run)滑(hua)，減(jian)低運(yun)動(dong)表面間的(de)(de)(de)摩(mo)擦和磨損。潤(run)滑(hua)脂的(de)(de)(de)工作原理是稠化劑將油保持(chi)在需要潤(run)滑(hua)的(de)(de)(de)位置(zhi)上，有負(fu)載時(shi)，稠化劑將油釋(shi)放出來，從而(er)起到(dao)潤(run)滑(hua)作用。

潤滑(hua)(hua)脂(zhi)(zhi)填(tian)充過多(duo)或(huo)(huo)不(bu)足(zu)，都會引起(qi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)溫(wen)度(du)升高，不(bu)能保證(zheng)軸(zhou)承(cheng)(cheng)(cheng)(cheng)持續(xu)運行。滾動軸(zhou)承(cheng)(cheng)(cheng)(cheng)里一(yi)般的(de)(de)(de)潤滑(hua)(hua)脂(zhi)(zhi)填(tian)充量可(ke)參考下(xia)面(mian)原則：1、一(yi)般軸(zhou)承(cheng)(cheng)(cheng)(cheng)內(nei)不(bu)應(ying)裝滿潤滑(hua)(hua)脂(zhi)(zhi)，食品級(ji)油(you)脂(zhi)(zhi)，以(yi)裝到軸(zhou)承(cheng)(cheng)(cheng)(cheng)內(nei)腔(qiang)全(quan)部空間(jian)的(de)(de)(de)1/2-3/4即可(ke)。2、水平軸(zhou)承(cheng)(cheng)(cheng)(cheng)填(tian)充內(nei)腔(qiang)空間(jian)的(de)(de)(de)2/3-3/4。3、垂直安裝的(de)(de)(de)軸(zhou)承(cheng)(cheng)(cheng)(cheng)填(tian)充腔(qiang)內(nei)空間(jian)的(de)(de)(de)1/2（上側(ce)），3/4（下(xia)側(ce)）。4、在容(rong)易(yi)污(wu)染的(de)(de)(de)環境中(zhong)(zhong)，對(dui)于低(di)速(su)或(huo)(huo)中(zhong)(zhong)速(su)的(de)(de)(de)軸(zhou)承(cheng)(cheng)(cheng)(cheng)，要把軸(zhou)承(cheng)(cheng)(cheng)(cheng)和軸(zhou)承(cheng)(cheng)(cheng)(cheng)盒里全(quan)部空間(jian)填(tian)滿。5、高速(su)軸(zhou)承(cheng)(cheng)(cheng)(cheng)在裝脂(zhi)(zhi)前應(ying)先將軸(zhou)承(cheng)(cheng)(cheng)(cheng)放在好潤滑(hua)(hua)油(you)中(zhong)(zhong)，一(yi)般是用所裝潤滑(hua)(hua)脂(zhi)(zhi)的(de)(de)(de)基礎油(you)中(zhong)(zhong)浸(jin)泡一(yi)下(xia)，以(yi)免在啟動時因摩擦面(mian)潤滑(hua)(hua)脂(zhi)(zhi)不(bu)足(zu)而引起(qi)軸(zhou)承(cheng)(cheng)(cheng)(cheng)燒壞。

潤(run)滑(hua)脂(zhi)(zhi)的品(pin)(pin)(pin)種(zhong)、牌(pai)號不(bu)同(tong)，則性能(neng)、特點(dian)不(bu)同(tong)，食品(pin)(pin)(pin)級油(you)脂(zhi)(zhi)零售商，適(shi)用(yong)(yong)(yong)(yong)(yong)(yong)的場合也不(bu)相同(tong)。合理地選(xuan)擇(ze)和使用(yong)(yong)(yong)(yong)(yong)(yong)，是(shi)使汽(qi)(qi)車得到可靠(kao)潤(run)滑(hua)的前(qian)提(ti)，食品(pin)(pin)(pin)級油(you)脂(zhi)(zhi)圖片，選(xuan)擇(ze)和使用(yong)(yong)(yong)(yong)(yong)(yong)汽(qi)(qi)車潤(run)滑(hua)脂(zhi)(zhi)時(shi)應注意以下幾點(dian)：一般汽(qi)(qi)車用(yong)(yong)(yong)(yong)(yong)(yong)潤(run)滑(hua)脂(zhi)(zhi)普遍推薦使用(yong)(yong)(yong)(yong)(yong)(yong)汽(qi)(qi)車通用(yong)(yong)(yong)(yong)(yong)(yong)鯉(li)基潤(run)滑(hua)脂(zhi)(zhi)，該潤(run)滑(hua)脂(zhi)(zhi)適(shi)于在一般汽(qi)(qi)車各(ge)摩擦點(dian)使用(yong)(yong)(yong)(yong)(yong)(yong)。使用(yong)(yong)(yong)(yong)(yong)(yong)汽(qi)(qi)車通用(yong)(yong)(yong)(yong)(yong)(yong)鈕基潤(run)滑(hua)脂(zhi)(zhi)與以前(qian)使用(yong)(yong)(yong)(yong)(yong)(yong)鈣(gai)基潤(run)滑(hua)脂(zhi)(zhi)相比，可延長換油(you)期兩(liang)倍(bei)，減少磨損，簡化品(pin)(pin)(pin)種(zhong)。輪(lun)毅軸承是(shi)主要用(yong)(yong)(yong)(yong)(yong)(yong)脂(zhi)(zhi)部位，直(zhi)全年(nian)使用(yong)(yong)(yong)(yong)(yong)(yong)2#脂(zhi)(zhi)(南方(fang))，或(huo)冬用(yong)(yong)(yong)(yong)(yong)(yong)1#脂(zhi)(zhi)，夏(xia)用(yong)(yong)(yong)(yong)(yong)(yong)2#脂(zhi)(zhi)(北方(fang))。