液压马达是液压系统的一种执行元件，它将液压泵提供的液体压力能转变为其输出轴的机械能(转矩和转速)。液体是传递力和运动的介质。液压马达，亦称为油马达，主要应用于注塑机械、船舶、起扬机、工程机械、建筑机械、煤矿机械、矿山机械、冶金机械、船舶机械、石油化工、港口机械等。
轴向柱塞泵除阀式配流外，其它形式原则上都可以作为液压马达用，即轴向柱塞泵和轴向柱塞马达是可逆的。轴向柱塞马达的工作原理为，配油盘和斜盘固定不动，马达轴与缸体相连接一起旋转。当压力油经配油盘的窗口进入缸体的柱塞孔时，柱塞在压力油作用下外伸，紧贴斜盘，斜盘对柱塞产生一个法向反力p，此力可分解为轴向分力及和垂直分力Q。Q与柱塞上液压力相平衡，而Q则使柱塞对缸体中心产生一个转矩，带动马达轴逆时针方向旋转。轴向柱塞马达产生的瞬时总转矩是脉动的。若改变马达压力油输入方向，则马达轴按顺时针方向旋转。斜盘倾角a的改变、即排量的变化，不仅影响马达的转矩，而且影响它的转速和转向。斜盘倾角越大，产生转矩越大，转速越低。A11VLO260EP2/11R-NPD12N00力士乐泵特价
A11VO40LRS/10R-NSC12N00 A11VO40LRS/10R-NPC12N00
A11VO40LRH2/10R-NSC12N00 A11VO40LRH2/10R-NPC12N00
A11VO40DRS/10R-NSC12N00  A11VO40DRS/10R-NPC12N00
A11VO60LRS/10R-NSC12N00 A11VO60LRS/10R-NPC12N00
A11VO60LRS/10R-NSC12K01 A11VO60LRS/10R-NPC12K01
A11VO60LRH2/10R-NSC12N00 A11VO60LRH2/10R-NPC12N00
A11VO60LRH2/10R-NSC12K01 A11VO60LRH2/10R-NPC12K01
A11VO60DRS/10R-NSC12N00 A11VO60DRS/10R-NPC12N00
A11VO60DRS/10R-NSC12K01 A11VO60DRS/10R-NPC12K01
A11VO75LRS/10R-NSD12N00 A11VO75LRS/10R-NPD12N00
A11VO75LRS/10R-NSD12K01 A11VO75LRS/10R-NPD12K01
A11VO75LRH2/10R-NSD12N00 A11VO75LRH2/10R-NPD12N00
A11VO75LRH2/10R-NSD12K01 A11VO75LRH2/10R-NPD12K01
A11VO75DRS/10R-NSD12N00 A11VO75DRS/10R-NPD12N00
A11VO75DRS/10R-NSD12K01 A11VO75DRS/10R-NPD12K01
A11VO95LRS/10R-NSD12N00 A11VO95LRS/10R-NPD12N00
A11VO95LRS/10R-NSD12K01 A11VO95LRS/10R-NPD12K01
A11VO95LRH2/10R-NSD12N00 A11VO95LRH2/10R-NPD12N00
A11VO95LRH2/10R-NSD12K01 A11VO95LRH2/10R-NPD12K01
A11VO95DRS/10R-NSD12N00 A11VO95DRS/10R-NPD12N00
A11VO95DRS/10R-NSD12K01 A11VO95DRS/10R-NPD12K01
A11VO130LRS/10R-NSD12N00 A11VO130LRS/10R-NPD12N00
A11VO130LRS/10R-NSD12K02 A11VO130LRS/10R-NPD12K02
A11VO130LRH2/10R-NSD12N00 A11VO130LRH2/10R-NPD12N00
A11VO130LRH2/10R-NSD12K02 A11VO130LRH2/10R-NPD12K02
A11VO130DRS/10R-NSD12N00 A11VO130DRS/10R-NPD12N00
A11VO130DRS/10R-NSD12K02 A11VO130DRS/10R-NPD12K02
A11VLO190LRS/11R-NSD12N00 A11VLO190LRS/11R-NPD12N00
A11VLO190LRS/11R-NSD12K02 A11VLO190LRS/11R-NPD12K02
A11VLO190HD1/11R-NSD12N00 A11VLO190HD1/11R-NPD12N00
A11VLO190HD1/11R-NSD12K02 A11VLO190HD1/11R-NPD12K02

从能量转换的观点来看，液压泵与液压马达是可逆工作的液压元件，向任何一种液压泵输入工作液体，都可使其变成液压马达工况;反之，当液压马达的主轴由外力矩驱动旋转时，也可变为液压泵工况。因为它们具有同样的基本结构要素--密闭而又可以周期变化的容积和相应的配油机构。卡桑尼马达MR4500L-F1Q2N1N1NX0600/58081
卡桑尼马达MR1100G-F1N1N1S1N1000/34985
卡桑尼马达MR1100G-N1N1N1N1N1000/47740 
卡桑尼马达MR125C-D1-N1-U1-C1-N+ B190N1N1UI
卡桑尼马达MRA6300L-P1N1N1?N1NX
卡桑尼马达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

轴向柱塞泵除阀式配流外，其它形式原则上都可以作为液压马达用，即轴向柱塞泵和轴向柱塞马达是可逆的。轴向柱塞马达的工作原理为，配油盘和斜盘固定不动，马达轴与缸体相连接一起旋转。当压力油经配油盘的窗口进入缸体的柱塞孔时，柱塞在压力油作用下外伸，紧贴斜盘，斜盘对柱塞产生一个法向反力p，此力可分解为轴向分力及和垂直分力Q。Q与柱塞上液压力相平衡，而Q则使柱塞对缸体中心产生一个转矩，带动马达轴逆时针方向旋转。轴向柱塞马达产生的瞬时总转矩是脉动的。若改变马达压力油输入方向，则马达轴按顺时针方向旋转。斜盘倾角a的改变、即排量的变化，不仅影响马达的转矩，而且影响它的转速和转向。斜盘倾角越大，产生转矩越大，转速越低。4系列变量柱塞泵：
A10VSO18DFR1/31R-PPA12NOO、
A10VSO28DFR1/31R-VPA12N00、
A10VSO45DFR1/32R-PPB12N00、                              
A10VSO71DFR1/32R-VPB22U99 
A10VSO100DFR1/32R-VPB12N00、
A10VSO140DRS/32R-VPB22U99等
A4VSO71DR/30R-PPB13N00 
A4VSO125DR/30R-PPB13N00 
A4VSO180DR/30R-PPB13
A4VSO250DR/30R-PPB13NOO等  
A4VSO40LR2G/10R-PPB13N00 
A4VSO71DFR/10X-PPB13N00 
A4VSO71DR/10X-PPB13N00 
A4VSO71DRG/10X-PPB13N00 
A4VSO71LR2/10R-PPB13N00 
A4VSO71LR2D/10R-PPB13N00 
A4VSO125DFR/22R-PPB13N00 
A4VSO125DR/22R-PPB13N00 
A4VSO125DR/22R-VPB13N00 
A4VSO125LR2/22R-PPB13N00 
A4VSO125LR2G/22R-PPB13N00 
A4VSO125LR2N/22R-PPB13N00
A4VSO180LR2N/22R-PPB13N00 
A4VSO250DFR/30R-PPB13N00 
A4VSO250DR/30R-PPB13N00 
A4VSO250DRG/30R-PPB13N00 
A4VSO250LR2/30R-PPB13N00 
A4VSO250LR2G/30R-PPB13N00 
A4VSO250LR2N/30R-PPB13N00 
A4VSO180DFR/22R-PPB13N00 
A4VSO180DR/22R-PPB13N00 
A4VSO180DRG/22R-PPB13N00 
柱塞泵 A4VG90HWD1/32R-NZF001S 
柱塞泵 A4VTG90HW/32R-NLD10F001S 
轴向柱塞泵 A4VSO125DR/PPB13NOO 
变量轴向柱塞泵 A4VSO180DR/30R-PPB13N00 
变量轴向柱塞泵 A4VSO125DR/30R-PPB13N00 
柱塞泵 A4VS0125DR/10R-PPB13N00 
柱塞泵 A4VS071DR/10R-PPB13N00 
柱塞泵 A4VS0125DR/22R 
变量泵 A4VSO250EO2/30R-VPB13N00-SO2
柱塞泵 A4VG125EP2MT1/32-NZF02F021SH-S 
柱塞泵 A4VSO250EO2/30R-VPB13N00-SO2
变量轴向柱塞泵 A4VSO180DR/30R-PPB13N00 
变量轴向柱塞泵 A4VSO125DR/30R-PPB13N00 
油泵 A4VSO180DFR/30R-PPB13N00 
柱塞泵 A4VS0180DR/30R-PPB13N00
轴向柱塞泵主泵 A4VS0125DRG/30R-PPB13N00 
油泵 A4VS071DR/30R-PPB13N00 
德国力士乐A4VG-125泵的配件 主轴 080121-001# 
轴向柱塞泵 E-A4VSO250EO2/30R-VPB25N00-SO3
轴向柱塞泵 E-A4VSO250EO2/30R-VPB25N00-SO3 
柱塞泵 A4VSO180DR/30R-FPB13N00
恒压变量泵 E-A4VS0125DR/22R-VPB13N00 
柱塞泵 A4VSO180DR/30R-FPB13N00 
柱塞泵 A4VS0180LR2G/30R-PPB13NOO
柱塞泵 A4VSO250LR2D/30R-PPB13NOO 
柱塞泵 A4VSO250DR/30R-PPB13NOO
泵 A4VG56EZ2DM1/32-NSC02F003F

折叠低速马达
转速低于500r/min的液压马达属于低速液压马达。它的基本形式是径向柱塞式。低速液压马达的主要特点是:排量大，体积大，转速低，可以直接与工作机构连接，不需要减速装置，使传动机构大大简化，低速液压马达的输出扭矩较大，可达几千到几万Nm，因此又称为低速大扭矩液压马达。