液壓馬達是液壓系統(tǒng)的一種執(zhí)行元件，它將液壓泵提供的液體壓力能轉變?yōu)槠漭敵鲚S的機械能(轉矩和轉速)。液體是傳遞力和運動的介質。液壓馬達，亦稱為油馬達，主要應用于注塑機械、船舶、起揚機、工程機械、建筑機械、煤礦機械、礦山機械、冶金機械、船舶機械、石油化工、港口機械等。
徑向柱塞式液壓馬達
工作原理，當壓力油經(jīng)固定的配油軸4的窗口進入缸體內柱塞的底部時，柱塞向外伸出，緊緊頂住定子的內壁，由于定子與缸體存在一偏心距。在柱塞與定子接觸處，定子對柱塞的反作用力為 。力可分解為和 兩個分力。當作用在柱塞底部的油液壓力為p，柱塞直徑為d，力和之間的夾角為X時，力對缸體產(chǎn)生一轉矩，使缸體旋轉。缸體再通過端面連接的傳動軸向外輸出轉矩和轉速。以析的一個柱塞產(chǎn)生轉矩的情況，由于在壓油區(qū)作用有好幾個柱塞，在這些柱塞上所產(chǎn)生的轉矩都使缸體旋轉，并輸出轉矩。徑向柱塞液壓馬達多用于低速大轉矩的情況下。
1.單作用連桿型徑向柱塞馬達
單作用連桿型徑向柱塞馬達外型呈五角星狀，該馬達由殼體、曲軸、配流軸、連桿、柱塞和偏心輪等零件組成。
優(yōu)點:結構簡單，工作可靠。
缺點:體積大、重量大，轉扭脈動，低速穩(wěn)定性較差。
2.多作用內曲線柱塞馬達MRE2100H-D1N1U1N1NX0800/34687
MRE2100H-F1N1N1S1NX0800/58329
MRE3100I-D1N1N1N1N0201/33492
MRE3100I-D2N1F1N1N0300/58540
MRE3100I-F1N1N1N3NX0300/58194
MRE3100I-F2N1N1N3NX0300/58211
MRE3100I-N1N1N1N1N0300/58042
MRE3100I-N1Q1N1S1N0300/60182
MRE3100I-P1N1N1C1N0300/60144
MR  125C P1N1N1C1N  0001/58357
MR 190C N1N1N1N1N0201/45170
MR 2400I P1N1N1G1N 0300/58660
MR 2800I P1N1N1C1N 0500/58352
MR 300D D1N1N1C1N  0401/58360
MR 300D N1N1N1N1N0401/45228
MR 450E D2N1F1N1N0301/34760
MR 450E N1M2N1N1N0301/45396
MR 700 N* 277297 SAE FLANGE
MR1000G-F2N1N1N1NP1000/52734
MR1000G-F2N1N1N1NX1000/58014-B
MR1000G-F2N1N1N1NX1000/58016-C
MR1000G-F2N1N1N1NX1000/58532-B
MR1000G-F2N1N1N1NX1000/58533-C
MR1000G-F2N1N1S1NX1000/34747
MR1000G-N1N1N1N1N1000/33978
MR1100G N1N1N1 S1 N
MR1100G-D1B1N1N1N1000/34852
MR1100G-D1B1N1T1N1000/60559
MR1100G-D1N1N1C1N1000/58641
MR1100G-D1N1N1N1N1000/34008
MR1100G-F1N1N1N1N1000/33943
MR1100G-F1N1N1S1NX1000/58326
MR1100G-F2N1N1N1NX1000/33953-B
MR1100G-F2N1N1N1NX1000/33954-C
MR1100G-F2N1N1S4NX1000/59336-B
MR1100G-F2N1N1S4NX1000/59337-C
MR1100G-N1C1N1N1N1000/47741
MR1100G-N1E1N1N1N1000/33945
MR1100G-N1N1N1C1N1000/34301
MR1100G-N1N1U1N1N1000/34468
MR1100G-N1Q1N1N1N1000/33981
MR1100G-N2N1F1C1N1000/59651
MR1100G-P1B1N1C1N1000/34798
MR1100G-P1N1N1C1N1000/34295
MR1100G-P1N1N1N1N1000/33944
MR1100G-P1N1N1N1S1000/58675
MR1100G-P1Q1N1N1N1000/34613
MR110B-D1N1N1N1N0100/60034
MR110B-D1Q1N1N1N0100/60102
MR110B-D2B1N1C1N0102/60868
MR110B-N1N1N1S1N0000/58937
MR125C-P1N1N1C1N0300/60095

從能量轉換的觀點來看，液壓泵與液壓馬達是可逆工作的液壓元件，向任何一種液壓泵輸入工作液體，都可使其變成液壓馬達工況;反之，當液壓馬達的主軸由外力矩驅動旋轉時，也可變?yōu)橐簤罕霉r。因為它們具有同樣的基本結構要素--密閉而又可以周期變化的容積和相應的配油機構?？ㄉＤ狁R達MR4500L-F1Q2N1N1NX0600/58081
卡桑尼馬達MR1100G-F1N1N1S1N1000/34985
卡桑尼馬達MR1100G-N1N1N1N1N1000/47740 
卡桑尼馬達MR125C-D1-N1-U1-C1-N+ B190N1N1UI
卡桑尼馬達MRA6300L-P1N1N1?N1NX
卡桑尼馬達MR700F-P1N1N1N1N 0800/59165
MRE3100I-P1N1N1N1N
MRE3100I-P1N1N1N1N0201/33697
MRE3100I-X2Q1V1C2NX0300/65030
MRE330D-D1M1N1N1N0001/34450
MRE330D-F2M2N1C2NX0001/34271
MRE330D-F2M2N1C2NX0001/34272
MRE330D-F2M2N1C2NX0500/59604
MRE330D-F2M2N1C2NX0502/60846
MRE330D-F2N1N2N1NX0502/60870-A
MRE330D-X2M2N1C2SX0001/33588
MRE330D-X2M2N1C2SX0001/33664
MRE330D-X2M2N1C2SX0502/60732
MRE330D-X2N1N1C2SX0001/34502
MRE500E-F2N1N2S3NX0502/60791-A
MRE500E-P1N1N1C1N0500/60395
MRE500E-P1N1N1S1N0101/34417
MRE5400L-D1N1N1S1NX0201/33800
MRE5400L-D1N1N1S1NX0300/58123
MRE5400L-F1N1N1N1NX0300/58083-
MRE5400L-F1N1N1S3NX0300/54789-
MRE5400L-F1N1N1S3NX0300/59345-
MRE5400L-F1T1N1N1NX0300/58612
MRE5400L-F2N1N1N1NX0300/34959
MRE5400L-F2N1N1N1NX0300/58198
MRE800F-D1N1N1N1N0900/59840
MRE800F-F1N1N1S1NX0900/59574
MRE800F-F1N1N1S1NX0902/60837
MRE800F-P1N1N1N1N0900/59607
MRE8200M-D1N1N1S1NX0500/59088
MRE8200M-F1M1N1N1NX0000/33374
MRE8200M-F1M1N1N1NX0400/58078
MRE8200M-F1M1N2N1NX0500/59075
MRE8200M-F2N1N1N1N0500/59123
MRE8200M-F2N1N1N1NX0400/58207
MRE8200M-F2N1N1N1NX0400/58225
MRE8200M-F2N1N1N1NX0500/59214-
MRE8200M-N1B1N1N1N0500/60049
MRTE10800P-D1N1N1G1N0300/60853
MRV1800H600F2N1N2N1NX0900/6065
MRV2800I1263N1Q2N1N1SX0601/607
MR300D-N1N1N1C1N0500/59190

工作原理，當壓力油經(jīng)固定的配油軸4的窗口進入缸體內柱塞的底部時，柱塞向外伸出，緊緊頂住定子的內壁，由于定子與缸體存在一偏心距。在柱塞與定子接觸處，定子對柱塞的反作用力為 。力可分解為和 兩個分力。當作用在柱塞底部的油液壓力為p，柱塞直徑為d，力和之間的夾角為X時，力對缸體產(chǎn)生一轉矩，使缸體旋轉。缸體再通過端面連接的傳動軸向外輸出轉矩和轉速。以析的一個柱塞產(chǎn)生轉矩的情況，由于在壓油區(qū)作用有好幾個柱塞，在這些柱塞上所產(chǎn)生的轉矩都使缸體旋轉，并輸出轉矩。徑向柱塞液壓馬達多用于低速大轉矩的情況下。E-A4VS0180DR/30R-PPB13N00
A4VS0250DRG/30R-PPB13N00
E-A4VS0180DR/30R-PPB13N00
A4VG125EP2DT1/32R-NAF02F011S
A4VG125HD1D2/32R-NTF02F691P
A4VG125HD1D2/32R-NSF02F02F021P
A4VG125HDDT1/32R-N2F02F011S
A4VG125EP2DT1/32R-NAF02F011S
E-A4VSO125DRPPB13NOO
A4VG56HD1D2-32R-NSF001S
A4VG90HD1D2-32R-NSF001S
A4VG125HD1D2-32R-NSF001S
A4VG125HDDT1/32R-N2F02F011S
A4VSO180DR/30R-PPB12NOOS1057
A4VG125HD1D2/32R-NTF02F691P
A4VG125HD1D2/32R-NSF02F02F021P
E-A4VSO125DRPPB13NOO
A4VS0250DR/22R-PPB13N00
A4VS0180DR/22R-PPB13N00
A4VSO40DR10RPPB13100N
A4VG125DA2D2/32L-PZE02E001D
A4VTG90HW/32R-NLD10F001S
A4VG125EP2ST1/32R-NAF02F011S
A4VTG90HW/32R-NLD10F001S
A4VS071DR/22R-PPB13NOO
A4VG125HD1D2-32R-NSF001S 
A10VSO18DFR1/31R-PPA12NOO
A10VSO28DFR1/31R-PPA12NOO
A10VSO45DFR1/31R-PPA12NOO
A10VSO71DFR1/31R-PPA12NOO
A10VSO100DFR1/31R-PPA12NOO
A10VSO140DFR1/31R-PPB12NOO

折疊高速馬達
額定轉速高于500r/min的馬達屬于高速馬達。高速馬達的基本形式有齒輪式、葉片式和軸向柱塞式。它們主要特點是轉速高，轉動慣量小，便于啟動、制動、調速和換向。