滾珠(zhu)絲杠(gang)是(shi)將回轉(zhuan)(zhuan)運動(dong)(dong)轉(zhuan)(zhuan)化為(wei)直線運動(dong)(dong)，或(huo)將直線運動(dong)(dong)轉(zhuan)(zhuan)化為(wei)回轉(zhuan)(zhuan)運動(dong)(dong)的理想的產品。

滾珠(zhu)絲杠是(shi)工具(ju)機械和(he)精密機械上最常使用的(de)傳動元件，其主要功能(neng)是(shi)將(jiang)旋(xuan)轉(zhuan)(zhuan)運(yun)動轉(zhuan)(zhuan)換成(cheng)線性(xing)(xing)運(yun)動，或將(jiang)扭(niu)矩(ju)轉(zhuan)(zhuan)換成(cheng)軸向反復作用力(li)，同(tong)時(shi)兼具(ju)高精度、可(ke)逆性(xing)(xing)和(he)高效率的(de)特點(dian)。由于具(ju)有很小的(de)摩擦阻(zu)力(li)，滾珠(zhu)絲杠被廣泛應用于各種工業(ye)設備(bei)和(he)精密儀(yi)器。

滾(gun)珠絲杠由螺桿、螺母(mu)、鋼(gang)球、預壓片、反向器、防(fang)塵(chen)器組成(cheng)。它的功能是將(jiang)旋轉(zhuan)運動(dong)(dong)(dong)(dong)轉(zhuan)化(hua)成(cheng)直(zhi)線運動(dong)(dong)(dong)(dong)，這(zhe)是艾克姆螺桿的進一步延(yan)伸和(he)發展，這(zhe)項發展的重(zhong)要意義(yi)就是將(jiang)軸承從滑動(dong)(dong)(dong)(dong)動(dong)(dong)(dong)(dong)作(zuo)變(bian)成(cheng)滾(gun)動(dong)(dong)(dong)(dong)動(dong)(dong)(dong)(dong)作(zuo)。當滾(gun)珠絲杠作(zuo)為主動(dong)(dong)(dong)(dong)體時(shi)，螺母(mu)就會(hui)隨絲桿的轉(zhuan)動(dong)(dong)(dong)(dong)角(jiao)度(du)按照對應規(gui)格的導程轉(zhuan)化(hua)成(cheng)直(zhi)線運動(dong)(dong)(dong)(dong)，被動(dong)(dong)(dong)(dong)工件可以通過螺母(mu)座和(he)螺母(mu)連(lian)接，從而實現對應的直(zhi)線運動(dong)(dong)(dong)(dong)。

滾珠(zhu)絲(si)(si)杠(gang)(gang)(gang)軸(zhou)承為(wei)適(shi)應(ying)各種用(yong)途，提供了(le)標準化種類繁多的產(chan)品。廣(guang)泛應(ying)用(yong)于機床，滾珠(zhu)的循(xun)環(huan)方(fang)(fang)式(shi)(shi)有循(xun)環(huan)導管式(shi)(shi)、循(xun)環(huan)器(qi)式(shi)(shi)、端(duan)蓋(gai)式(shi)(shi)。預(yu)壓(ya)方(fang)(fang)式(shi)(shi)有定位(wei)預(yu)壓(ya)（雙螺(luo)(luo)(luo)母(mu)方(fang)(fang)式(shi)(shi)、位(wei)預(yu)壓(ya)方(fang)(fang)式(shi)(shi)）、定壓(ya)預(yu)壓(ya)。可(ke)根據用(yong)途選擇適(shi)當類型。絲(si)(si)桿(gan)有高精度研(yan)磨加工(gong)(gong)(gong)的精密滾珠(zhu)絲(si)(si)杠(gang)(gang)(gang)（精度分為(wei)從CO-C7的6個等(deng)級）和經高精度冷軋(ya)加工(gong)(gong)(gong)成(cheng)型的冷軋(ya)滾珠(zhu)絲(si)(si)杠(gang)(gang)(gang)軸(zhou)承（精度分為(wei)從C7-C10的3個等(deng)級）。另外(wai)，為(wei)應(ying)付用(yong)戶急需交貨的情況，還有已對軸(zhou)端(duan)部進(jin)行(xing)了(le)加工(gong)(gong)(gong)的成(cheng)品，可(ke)自由對軸(zhou)端(duan)部進(jin)行(xing)追(zhui)加工(gong)(gong)(gong)的半(ban)成(cheng)品及冷軋(ya)滾珠(zhu)絲(si)(si)杠(gang)(gang)(gang)軸(zhou)承。作(zuo)為(wei)此軸(zhou)承的周(zhou)邊零部件，在使(shi)用(yong)所必(bi)要的絲(si)(si)杠(gang)(gang)(gang)支(zhi)撐單元(yuan)、螺(luo)(luo)(luo)母(mu)支(zhi)座、鎖緊螺(luo)(luo)(luo)母(mu)等(deng)也已被標準化生產(chan)了(le)，可(ke)供用(yong)戶選擇使(shi)用(yong)。