?柱塞泵的工作原理是：當(dāng)活塞桿運(yùn)動(dòng)的徑向力通過一個(gè)球鉸作用在另一個(gè)球鉸上時(shí)，在該球鉸的中心位置上會(huì)形成一個(gè)新的圓錐面當(dāng)活塞桿通過一個(gè)球鉸時(shí)，圓錐面會(huì)產(chǎn)生徑向力；當(dāng)活塞桿通過另一個(gè)球鉸時(shí)，圓錐面產(chǎn)生徑向力和軸向力。
因此，柱塞泵中的球鉸采用固定軸承和滑動(dòng)軸承結(jié)合的結(jié)構(gòu)同時(shí)由于球鉸不是固定安裝在液壓缸上而固定在油封內(nèi)，所以圓錐面上通常會(huì)有軸向力但也有例外例如：柱塞泵中有兩個(gè)球鉸安裝在油封中當(dāng)我們知道一個(gè)密封結(jié)構(gòu)時(shí)就可以知道它是如何工作起來-而在不知道其為何物的情況下就無(wú)法控制系統(tǒng)中出現(xiàn)任何問題-而我們不知道原因時(shí)就會(huì)感到焦慮和煩惱。
球鉸安裝在油封內(nèi)，其表面上的凹槽稱為滑道，用來使其與其他零件保持良好的接觸球鉸由四個(gè)球鉸接點(diǎn)組成，它們的接觸面具有不同的形狀和大小為了避免滑道接觸到介質(zhì)，在球鉸表面和油中都涂有潤(rùn)滑劑但是，潤(rùn)滑油脂對(duì)于防止磨擦至關(guān)重要，因?yàn)槟Σ梁湍ゲ習(xí)档颓蜚q表面的溫度，使其產(chǎn)生裂紋和氣孔，同時(shí)會(huì)導(dǎo)致磨損和腐蝕。
另外，當(dāng)滑道中液體較多時(shí)不能有效地密封時(shí)，液體會(huì)從滑道中逸出；這將使油無(wú)法有效地滲透到球鉸和滑道中（密封液和油封也是這樣）當(dāng)油在管道中流動(dòng)時(shí)，由于壓力而使整個(gè)管道扭曲并產(chǎn)生熱應(yīng)力由于摩擦和腐蝕，滑道一般被磨平，但也可起到一定防塵效果。
滑動(dòng)軸承還可以承受徑向壓力，以減少摩擦力并防止油封在運(yùn)行中破損 90-R-130-KA-1-NN-80-R-4-F1-F-03-GBA-32-32-24 90R130KA1NN80R4F1F03GBA323224 90-R-130-KA-1-NN-80-R-4-F1-F-03-GBA-35-35-24 90R130KA1NN80R4F1F03GBA353524 90R130-KA-1-NN-80-S-3-C8-F-03-GBA-29-29-24 90R130KA1NN80S3C8F03GBA292924 90-R-130-KA-1-NN-80-S-3-C8-F-03-GBA-29-29-24 90R130KA1NN80S3C8F03GBA292924 90R130-KA-1-NN-80-S-3-C8-F-03-GBA-35-35-24 90R130KA1NN80S3C8F03GBA353524 90-R-130-KA-1-NN-80-S-3-C8-F-03-GBA-35-35-24 90R130KA1NN80S3C8F03GBA353524 90R130-KA-1-NN-80-S-3-C8-F-03-GBA-42-42-20 90R130KA1NN80S3C8F03GBA424220 90-R-130-KA-1-NN-80-S-3-C8-H-03-GBA-26-26-24 90R130KA1NN80S3C8H03GBA262624 90R130-KA-1-NN-80-S-3-C8-H-03-GBA-35-35-24 90R130KA1NN80S3C8H03GBA353524 90-R-130-KA-1-NN-80-S-3-C8-H-03-GBA-35-35-24 90R130KA1NN80S3C8H03GBA353524 90R130-KA-1-NN-80-S-3-C8-H-03-GBA-42-42-24 90R130KA1NN80S3C8H03GBA424224 90-R-130-KA-1-NN-80-S-3-C8-H-03-GBA-42-42-24 90R130KA1NN80S3C8H03GBA424224 90R130-KA-1-NN-80-S-3-C8-H-04-GBA-30-30-24 90R130KA1NN80S3C8H04GBA303024 90-R-130-KA-1-NN-80-S-3-C8-H-04-GBA-30-30-24 90R130KA1NN80S3C8H04GBA303024 90-R-130-KA-1-NN-80-S-3-F1-F-03-GBA-26-26-28 90R130KA1NN80S3F1F03GBA262628 90R130-KA-1-NN-80-S-3-F1-F-03-GBA-35-35-24 90R130KA1NN80S3F1F03GBA353524 90-R-130-KA-1-NN-80-S-3-F1-F-03-GBA-35-35-24 90R130KA1NN80S3F1F03GBA353524 90-R-130-KA-1-NN-80-S-3-F1-F-03-GBA-42-42-24 90R130KA1NN80S3F1F03GBA424224 90R130-KA-1-NN-80-S-3-F1-F-03-GBA-42-42-24 90R130KA1NN80S3F1F03GBA424224 90R130-KA-1-NN-80-S-3-F1-F-04-GBA-38-38-24 90R130KA1NN80S3F1F04GBA383824 90-R-130-KA-1-NN-80-S-3-F1-F-04-GBA-38-38-24 90R130KA1NN80S3F1F04GBA383824 90-R-130-KA-1-NN-80-S-4-C8-F-02-GBA-29-29-20 90R130KA1NN80S4C8F02GBA292920 90R130-KA-1-NN-80-S-4-C8-F-04-GBA-26-26-24 90R130KA1NN80S4C8F04GBA262624 90-R-130-KA-1-NN-80-S-4-C8-F-04-GBA-26-26-24 90R130KA1NN80S4C8F04GBA262624 90R130-KA-2-CD-80-R-3-C8-H-04-GBA-40-40-24 90R130KA2CD80R3C8H04GBA404024 90-R-130-KA-2-CD-80-R-3-C8-H-04-GBA-40-40-24 90R130KA2CD80R3C8H04GBA404024 90R130-KA-2-CD-80-R-4-F1-H-00-GBA-38-38-24 90R130KA2CD80R4F1H00GBA383824 90-R-130-KA-2-CD-80-R-4-F1-H-00-GBA-38-38-24 90R130KA2CD80R4F1H00GBA383824 90R130-KA-2-DE-80-R-4-F1-H-00-GBA-38-38-24 90R130KA2DE80R4F1H00GBA383824 90-R-130-KA-2-DE-80-R-4-F1-H-00-GBA-38-38-24 90R130KA2DE80R4F1H00GBA383824 90R130-KA-2-NN-80-R-3-C8-F-06-GBA-42-42-24 90R130KA2NN80R3C8F06GBA424224。
