?液壓馬達(dá)是由兩個(gè)活塞分別推動(dòng)和控制的當(dāng)活塞往復(fù)運(yùn)動(dòng)時(shí)，推動(dòng)液體的往復(fù)運(yùn)動(dòng)，因此液體在活塞桿上的壓力可以傳遞，從而帶動(dòng)液體流動(dòng)，這就是馬達(dá)產(chǎn)生動(dòng)力的原理當(dāng)液壓油壓力超過額定值時(shí)，可以將油壓縮成油 壓或氣壓，使油在液體中以壓力形式流動(dòng).當(dāng)液體壓力達(dá)到油壓時(shí)，油就變成液體通過管路輸送到壓力閥；液體被排出時(shí)，這時(shí)壓力油和液體中所含的壓力釋放，壓力液體即為油（或壓入介質(zhì)）。
在制造液壓馬達(dá)的過程中，所有的零部件都是通過數(shù)控機(jī)床加工出來的因此可以使用更好的數(shù)控機(jī)床來進(jìn)行加工制造例如，在制造過程中，會(huì)需要大量的機(jī)器零件，因此對(duì)于這些零件的維護(hù)是必不可少的而液壓馬達(dá)又 有著其獨(dú)特的優(yōu)勢(shì)所在，對(duì)于這些零件來說，維護(hù)是非常簡(jiǎn)單和容易的一件事情。
而且維護(hù)費(fèi)用較低，所以它在機(jī)械制造業(yè)中非常受歡迎 體積小，重量輕，體積重量比同排量的齒輪泵要小，而且體積也小所以在應(yīng)用中，很少需要大型的機(jī)械傳動(dòng)裝置在沒有機(jī)械傳動(dòng)裝置時(shí)，可由電動(dòng)機(jī)驅(qū)動(dòng)還可由一個(gè)工作單元驅(qū)動(dòng)另一個(gè)工作單元。
因?yàn)橛鸵涸诹鲃?dòng)中是流動(dòng)的，所以油耗量很小，節(jié)約了能源 驅(qū)動(dòng)介質(zhì)為液壓油，可以使用普通機(jī)械傳動(dòng)的液壓泵，也可以使用具有多種驅(qū)動(dòng)功能的液壓泵，但如果使用流量很大，并且要求嚴(yán)格控制流量的系統(tǒng)或負(fù)載時(shí)，可選用特殊液壓泵，如使用粘度較大，但流量一般較小的離心泵。
這種液壓泵一般不需要特殊設(shè)備，只是使用了一種驅(qū)動(dòng)裝置，所以它也被稱為液壓泵這種泵主要有以下幾種類型:1、直接用油驅(qū)動(dòng)2、采用特殊液壓油（或使用液壓油）或合成油驅(qū)動(dòng)油（或電）由電機(jī)提供動(dòng)力時(shí)，可用電動(dòng)機(jī)直接帶動(dòng)液壓泵進(jìn)行工作。
油缸和機(jī)械傳動(dòng)裝置用油進(jìn)行潤滑加工后，在油與液介質(zhì)的接觸面上形成油膜，密封或用活塞上蓋或氣隙，以防止油箱內(nèi)產(chǎn)生真空或油液流出或油漏出（在工作時(shí)形成油路）由于油與液壓油組成了具有高粘度、高潤滑性、耐高溫和耐腐蝕性和抗老化能力強(qiáng)且潤滑效果好等優(yōu)點(diǎn)的油液，所以在一般工作環(huán)境中使用較為廣泛。
但液壓油應(yīng)具有抗氧化作用，耐腐蝕性也較強(qiáng) 90-R-055-KA-1-CD-80-P-4-S1-C-03-GBA-14-14-24 90R055KA1CD80P4S1C03GBA141424 90-R-055-KA-1-CD-80-P-4-S1-C-03-GBA-29-29-24 90R055KA1CD80P4S1C03GBA292924 90-R-055-KA-1-CD-80-R-3-S1-C-03-GBA-23-23-20 90R055KA1CD80R3S1C03GBA232320 90-R-055-KA-1-CD-80-R-3-S1-C-03-GBA-23-23-24 90R055KA1CD80R3S1C03GBA232324 90-R-055-KA-1-CD-80-R-4-S1-C-03-GBA-26-26-24 90R055KA1CD80R4S1C03GBA262624 90-R-055-KA-1-CD-80-S-3-S1-D-03-GBA-29-29-24 90R055KA1CD80S3S1D03GBA292924 90-R-055-KA-1-CD-80-S-4-S1-C-00-GBA-35-35-24 90R055KA1CD80S4S1C00GBA353524 90-R-055-KA-1-CD-80-S-4-S1-C-02-GBA-26-26-24 90R055KA1CD80S4S1C02GBA262624 90-R-055-KA-1-NN-60-L-3-S1-C-03-EBC-35-35-20 90R055KA1NN60L3S1C03EBC353520 90-R-055-KA-1-NN-60-L-3-S1-C-03-GBA-23-23-24 90R055KA1NN60L3S1C03GBA232324 90-R-055-KA-1-NN-60-L-3-S1-C-03-GBA-35-35-20 90R055KA1NN60L3S1C03GBA353520 90-R-055-KA-1-NN-60-L-3-S1-C-03-GBA-35-35-24 90R055KA1NN60L3S1C03GBA353524 90-R-055-KA-1-NN-60-L-4-S1-C-03-GBA-20-20-24 90R055KA1NN60L4S1C03GBA202024 90-R-055-KA-1-NN-60-P-3-S1-C-03-GBA-14-14-24 90R055KA1NN60P3S1C03GBA141424 90-R-055-KA-1-NN-60-P-3-S1-C-03-GBA-35-35-24 90R055KA1NN60P3S1C03GBA353524 90-R-055-KA-1-NN-60-P-3-T1-C-03-EBC-26-26-24 90R055KA1NN60P3T1C03EBC262624 90-R-055-KA-1-NN-60-P-3-T1-C-03-EBC-38-14-24 90R055KA1NN60P3T1C03EBC381424 90-R-055-KA-1-NN-60-P-4-S1-C-03-GBA-23-23-24 90R055KA1NN60P4S1C03GBA232324 90-R-055-KA-1-NN-60-P-4-S1-C-03-GBA-35-35-20 90R055KA1NN60P4S1C03GBA353520 90-R-055-KA-1-NN-60-P-4-S1-C-03-GBA-35-35-24 90R055KA1NN60P4S1C03GBA353524 90-R-055-KA-1-NN-60-R-3-S1-C-03-EBC-38-14-24 90R055KA1NN60R3S1C03EBC381424 90-R-055-KA-1-NN-60-R-4-S1-D-03-GBA-35-35-24 90R055KA1NN60R4S1D03GBA353524 90-R-055-KA-1-NN-60-S-3-C6-C-03-GBA-35-35-24 90R055KA1NN60S3C6C03GBA353524 90-R-055-KA-1-NN-60-S-3-C6-C-03-GBA-38-38-24 90R055KA1NN60S3C6C03GBA383824 90R055-KA-1-NN-60-S-3-C6-C-04-GBA-32-32-24 90R055KA1NN60S3C6C04GBA323224 90-R-055-KA-1-NN-60-S-3-C6-C-04-GBA-32-32-24 90R055KA1NN60S3C6C04GBA323224 90-R-055-KA-1-NN-60-S-3-C6-D-03-GBA-38-38-24 90R055KA1NN60S3C6D03GBA383824 90-R-055-KA-1-NN-60-S-3-S1-C-03-GBA-17-17-24 90R055KA1NN60S3S1C03GBA171724 90-R-055-KA-1-NN-60-S-3-S1-C-03-GBA-20-20-24 90R055KA1NN60S3S1C03GBA202024 90-R-055-KA-1-NN-60-S-3-S1-C-03-GBA-35-35-24 90R055KA1NN60S3S1C03GBA353524 90-R-055-KA-1-NN-60-S-3-S1-C-03-GBA-42-42-24 90R055KA1NN60S3S1C03GBA424224 90-R-055-KA-1-NN-60-S-3-S1-D-03-GBA-20-20-20 90R055KA1NN60S3S1D03GBA202020 90-R-055-KA-1-NN-60-S-3-S1-D-03-GBA-20-20-24 90R055KA1NN60S3S1D03GBA202024 90-R-055-KA-1-NN-60-S-4-C6-C-03-GBA-29-29-20 90R055KA1NN60S4C6C03GBA292920 90-R-055-KA-1-NN-60-S-4-C6-D-03-GBA-35-35-24 90R055KA1NN60S4C6D03GBA353524 90-R-055-KA-1-NN-60-S-4-S1-C-00-GBA-35-35-24 90R055KA1NN60S4S1C00GBA353524 90-R-055-KA-1-NN-80-L-3-C6-C-03-GBA-42-42-24 90R055KA1NN80L3C6C03GBA424224 90-R-055-KA-1-NN-80-L-3-C6-C-09-GBA-42-42-20 90R055KA1NN80L3C6C09GBA424220 90-R-055-KA-1-NN-80-L-3-C6-C-09-GBA-42-42-22 90R055KA1NN80L3C6C09GBA424222 90-R-055-KA-1-NN-80-L-3-S1-B-03-GBA-35-35-24 90R055KA1NN80L3S1B03GBA353524 90-R-055-KA-1-NN-80-L-3-S1-D-05-GBA-23-23-24 90R055KA1NN80L3S1D05GBA232324 90-R-055-KA-1-NN-80-L-4-S1-C-03-GBA-42-42-24 90R055KA1NN80L4S1C03GBA424224 90-R-055-KA-1-NN-80-L-4-S1-D-03-GBA-17-17-24 90R055KA1NN80L4S1D03GBA171724 90-R-055-KA-1-NN-80-L-4-S1-D-03-GBA-20-20-24 90R055KA1NN80L4S1D03GBA202024 90-R-055-KA-1-NN-80-P-3-C6-C-09-GBA-35-35-20 90R055KA1NN80P3C6C09GBA353520 90-R-055-KA-1-NN-80-P-3-C6-C-09-GBA-42-42-20 90R055KA1NN80P3C6C09GBA424220 90-R-055-KA-1-NN-80-P-3-S1-C-00-GBA-42-42-24 90R055KA1NN80P3S1C00GBA424224 90-R-055-KA-1-NN-80-P-3-S1-D-00-GBA-38-38-24 90R055KA1NN80P3S1D00GBA383824 90-R-055-KA-1-NN-80-P-3-S1-D-03-GBA-32-32-24 90R055KA1NN80P3S1D03GBA323224 90-R-055-KA-1-NN-80-P-3-T1-C-03-GBA-26-26-24 90R055KA1NN80P3T1C03GBA262624 90-R-055-KA-1-NN-80-P-4-C6-C-03-GBA-38-38-24 90R055KA1NN80P4C6C03GBA383824 90-R-055-KA-1-NN-80-P-4-S1-C-03-GBA-42-42-24 90R055KA1NN80P4S1C03GBA424224 90-R-055-KA-1-NN-80-R-3-C6-C-03-GBA-42-42-24 90R055KA1NN80R3C6C03GBA424224 90-R-055-KA-1-NN-80-R-3-S1-C-03-GBA-20-20-24 90R055KA1NN80R3S1C03GBA202024 90-R-055-KA-1-NN-80-R-3-S1-C-05-GBA-35-35-20 90R055KA1NN80R3S1C05GBA353520 90-R-055-KA-1-NN-80-R-4-S1-C-03-GBA-32-32-24 90R055KA1NN80R4S1C03GBA323224 90-R-055-KA-1-NN-80-S-3-C6-C-02-GBA-42-42-20 90R055KA1NN80S3C6C02GBA424220 90-R-055-KA-1-NN-80-S-3-C6-C-03-GBA-42-42-24 90R055KA1NN80S3C6C03GBA424224 90-R-055-KA-1-NN-80-S-3-C6-C-09-GBA-42-42-20 90R055KA1NN80S3C6C09GBA424220 90-R-055-KA-1-NN-80-S-3-C6-D-03-GBA-35-35-24 90R055KA1NN80S3C6D03GBA353524 90-R-055-KA-1-NN-80-S-3-S1-C-03-GBA-32-32-20 90R055KA1NN80S3S1C03GBA323220 90-R-055-KA-1-NN-80-S-3-S1-C-03-GBA-38-32-24 90R055KA1NN80S3S1C03GBA383224 90-R-055-KA-1-NN-80-S-4-C6-C-03-GBA-35-35-24 90R055KA1NN80S4C6C03GBA353524 90-R-055-KA-1-NN-80-S-4-S1-C-00-GBA-29-29-20 90R055KA1NN80S4S1C00GBA292920 90-R-055-KA-1-NN-80-S-4-S1-C-00-GBA-35-35-24 90R055KA1NN80S4S1C00GBA353524 90-R-055-KA-1-NN-80-S-4-S1-C-02-GBA-26-26-24 90R055KA1NN80S4S1C02GBA262624 90-R-055-KA-1-NN-80-S-4-S1-C-03-GBA-26-26-24 90R055KA1NN80S4S1C03GBA262624 90-R-055-KA-1-NN-80-S-4-S1-C-03-GBA-32-32-24 90R055KA1NN80S4S1C03GBA323224 90-R-055-KA-1-NN-80-S-4-S1-C-03-GBA-38-38-24 90R055KA1NN80S4S1C03GBA383824 90-R-055-KA-2-AB-60-S-3-C6-D-03-GBA-30-30-24 90R055KA2AB60S3C6D03GBA303024 90-R-055-KA-2-AB-80-S-3-C6-D-04-GBA-38-38-20 90R055KA2AB80S3C6D04GBA383820 90-R-055-KA-2-AB-80-S-3-S1-D-03-GBA-32-32-24 90R055KA2AB80S3S1D03GBA323224 90-R-055-KA-2-BC-60-L-4-S1-C-03-GBA-35-35-24 90R055KA2BC60L4S1C03GBA353524 90-R-055-KA-2-BC-60-P-3-S1-D-03-GBA-35-35-24 90R055KA2BC60P3S1D03GBA353524 90-R-055-KA-2-BC-80-L-4-S1-C-03-GBA-35-35-24 90R055KA2BC80L4S1C03GBA353524 90-R-055-KA-2-CD-80-L-4-S1-C-03-GBA-35-35-24 90R055KA2CD80L4S1C03GBA353524 90-R-055-KA-2-NN-60-D-4-S1-L-02-GBA-32-32-24 90R055KA2NN60D4S1L02GBA323224 90-R-055-KA-2-NN-60-P-3-S1-D-05-GBA-32-32-20 90R055KA2NN60P3S1D05GBA323220 90-R-055-KA-2-NN-80-P-3-S1-C-03-GBA-35-35-24 90R055KA2NN80P3S1C03GBA353524 90-R-055-KA-2-NN-80-R-4-S1-C-03-GBA-26-26-28 90R055KA2NN80R4S1C03GBA262628 90-R-055-KA-2-NN-80-S-3-C6-C-03-GBA-42-42-24 90R055KA2NN80S3C6C03GBA424224 90-R-055-KA-2-NN-80-S-4-C6-C-03-GBA-42-42-24 90R055KA2NN80S4C6C03GBA424224 90-R-055-KA-5-AB-60-L-3-C6-C-03-GBA-35-35-24 90R055KA5AB60L3C6C03GBA353524 90R055-KA-5-AB-60-L-3-S1-D-03-GBA-35-35-24 90R055KA5AB60L3S1D03GBA353524 90-R-055-KA-5-AB-60-L-3-S1-D-03-GBA-35-35-24 90R055KA5AB60L3S1D03GBA353524 90-R-055-KA-5-AB-60-P-3-C6-C-03-GBA-35-35-28 90R055KA5AB60P3C6C03GBA353528 90-R-055-KA-5-AB-60-P-3-S1-C-03-EBC-23-23-24 90R055KA5AB60P3S1C03EBC232324 90R055-KA-5-AB-60-P-3-S1-C-03-GBA-35-35-24 90R055KA5AB60P3S1C03GBA353524 90-R-055-KA-5-AB-60-P-3-S1-C-03-GBA-35-35-24 90R055KA5AB60P3S1C03GBA353524 90-R-055-KA-5-AB-60-P-4-C6-C-03-GBA-35-35-28 90R055KA5AB60P4C6C03GBA353528。
