工作原理，當壓力油經固定的配油軸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。
卡桑尼五星馬達MR33,MR57,MR73,MR300,MR350,MR2800,MR3600,MR4500,MR6500,MR7000,MRE330,MRE500
CALZONI液壓馬達 卡桑尼徑向液壓馬達 CALZON馬達，卡桑尼液壓馬達，意大利卡桑尼馬達，意大利卡桑尼系列，CALZONI液壓馬達MRC-800、意大利Calzoni徑向柱塞液壓馬達、CALZONI液壓馬達、意大利CALZONI液壓馬達MRCN.  MRC.  MR.  MRE  固定流量系列--
MR33、MR57、MR73、MR93、MR110、MR125、MR160、MR250、MR450、MR700、MR1100、MR1600、MR1800、MR2400、MR2800、MR3600、MR4500、MR6500、MR7000、MRE330、MRE500、MRE800、MRE1400、MRE2100、MRE3100、MRE5400、MRE8200、MRC250、MRC300、MRC350、MRC400、MRC500、MRC600、MRC700、MRC800、MRC1000、MRC1100、MRC1200、MRC1400L、MRC1400、MRC1600、MRC1800、MRC2000、MRC2400、MRC2800、MRC3100、MRC3600、MRC4500、MRC5400、MRCN250、MRCN300、MRCN350、MRCN400L、MRCN400、MRCN450、MRCN500、MRCN600、MRCN700、MRCN800i、MRCN800、MRCN1000、MRCN1100、MRCN1200 
MR4500L-F2N1N1N1NX0600/58205
MR4500L-F2N1N1N1NX0700/60669
MR4500L-N1M1V1T1N0600/Y59986
MR4500L-N1M1V2T1NX0600/Y60002
MR4500L-N1N1N1C1N0600/58212
MR4500L-N1N1N1N1N0600/58060
MR4500L-N1N1N1N1NX
MR4500L-N1N1N1T1NX0600/Y58911
MR4500L-N1Q1N1N1N0600/Y59363
MR4500L-P1N1N1N1N0600/58204
CALZON液壓馬達MR4500L-P1N1N1N1NX
MR4500L-P1N1N1N1NX0600/58239
MR4500L-X2X2N1N1NX0600/58082
MR450E-B1N1N1T1N0502/61064
MR450E-D1B1N1N1N0301/34268
MR450E-D1N1N1C1N0500/59427
MR450E-D1N1N1N1N0502/60916
MR450E-D1N1N1S1S0500/59564
MR450E-D1N1N1T1N0500/Y59822
MR450E-D1N1U1C1NX0500/60266
MR450E-D1Q2N1N1N0500/59647
MR450E-D1Q2N1N1N0502/60935
MR450E-F1B1N1S1N0500/59831
MR450E-F1N1N1C1NX0301/58701
MR450E-F1N1N1C1NX0502/60833
CALZON液壓馬達MR450E-F1N1N1N1N
MR450E-F1N1N1N1N0301/45334
MR450E-F1N1N1S1N
MR450E-F1N1N1S1N0500/59473
MR450E-F1N1N1S1NX0500/59442
MR450E-F1N1N1S2NX0500/59528
MR450E-F1N1N1T1N0500/Y60533
MR450E-F1N1N1X2NX0500/Y59557
MR450E-N1C1N1N1N0301/45332
MR450E-N1C1N1N1N0500/59640
MR450E-N1N1N1C1N0301/45404
MR450E-N1N1N1C1N0500/59472
MR450E-N1N1N1C1N0502/60810
MR450E-N1N1N1L1N0500/Y60438
MR450E-N1N1N1N1N0500/59376
MR450E-N1N1V1C1N0500/60483
MR450E-N1T1N1N1N0301/45337
MR450E-N1T1N1N1N0500/Y59826
MR450E-N2C1N1C1N0301/46864

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。

折疊低速馬達
轉速低于500r/min的液壓馬達屬于低速液壓馬達。它的基本形式是徑向柱塞式。低速液壓馬達的主要特點是:排量大，體積大，轉速低，可以直接與工作機構連接，不需要減速裝置，使傳動機構大大簡化，低速液壓馬達的輸出扭矩較大，可達幾千到幾萬Nm，因此又稱為低速大扭矩液壓馬達。

但是，由于液壓馬達和液壓泵的工作條件不同，對它們的性能要求也不一樣，所以同類型的液壓馬達和液壓泵之間，仍存在許多差別。首先液壓馬達應能夠正、反轉，因而要求其內部結構對稱;液壓馬達的轉速范圍需要足夠大，特別對它的穩(wěn)定轉速有一定的要求。因此，它通常都采用滾動軸承或靜壓滑動軸承;其次液壓馬達由于在輸入壓力油條件下工作，因而不必具備自吸能力，但需要一定的初始密封性，才能提供必要的起動轉矩。由于存在著這些差別，使得液壓馬達和液壓泵在結構上比較相似，但不能可逆工作。MR500F-F1N1N1S1NX0701/58323
MR500F-F1N1N1S1NX0900/59830
MR500F-F2N1N1C1NX0902/60886
MR500F-F2N1N1N1NX0701/34963-B
MR500F-F2N1N1S3NX0800/59444-B
MR500F-F2N1N1S3NX0902/60825-B
MR500F-F2N1N2N1NX0902/60824-B
MR500F-F2N1N2S3NX0900/59439-B
MR57A-F1N1V1S1N0200/58481
MR57A-N1N1V1S1N0200/58366
MR57A-P1N1N1N1N0000/34768
MR57A-P1N1N1N1N0001/58006
MR57A-P1N1N1S1N0200/58738
MR57A-P1N1V1N1N0200/58373
MR600F-D1B1N1N1N0101/58722
MR600F-D1N1N1C1N0900/59540
MR600F-D1N1U1N1N0101/34878
MR600F-F1N1N1N1N0101/45465
MR600F-F2N1N1C1NX0101/58953
MR600F-F2N1N1C1NX0900/59595
MR600F-F2N1N1N1NX0101/34934-B
MR600F-N1N1N1N1N0101/46448
MR600F-N1N1N1N1N0900/59576
MR600F-P1N1N1C1N0900/59656
MR600F-P2N1F1N1N0900/60322
MR6500M-D2N1N1N1NX0500/60293
MR7000M-F1M1N2N1NX0500/59319
MR7000M-F2N1N1N1N0500/58990
MR7000M-F2N1N1N1NX0400/58206
MR7000M-F2N1N1N1NX0500/59517
MR7000M-F2N1N1S3NX0500/59346
MR7000M-N1N1N1N1N0500/58756
MR7000M-P1N1N1N1N0200/45561
MR700F-D1B1N1N1N0902/60942
MR700F-D1N1N1N1N0900/59377
MR700F-F1N1N1S1NX0800/59358
MR700F-F1N1N1S1NX0902/60844
MR700F-F2N1N1C1NX0701/58036
MR700F-F2N1N1C1NX0701/58038
MR700F-F2N1N1C1NX0900/59552
MR700F-F2N1N1C1NX0900/59807
MR700F-F2N1N1N1NX0701/34931-B
MR700F-F2N1N1S3NX0902/60826-B
MR700F-F2N1N2N1NX0902/60790-B
MR700F-F2N1N2S3NX0902/60968-B
MR700F-N1B1N1S1N0900/60392
MR700F-N1C1N1N1N0701/45415
MR700F-N1N1N1N1N0900/59378
MR700F-N1N1N1S1N0701/58527
MR700F-N1Q1N1N1N0902/60872
MR700F-N1T1N1N1N0900/59700
MR700F-N1T1N1N1N0901/56698
MR700F-P1N1N1C1N0900/59565
MR700F-P1N1N1N1N0900/59454
MR700F-P1Q1N1N1N0701/34591
MR700F-P2Q1N2N1NX0900/59915
MR93B-N1Q1V1C1N0000/59128
MR93B-P1N1N1N1N0000/33325
MRA1600G-F2N1N1S3NX0100/54793
MRA2400H-F2N1N1N1NX0100/58825
MRA2400H-F2N1N1S4NX0100/54794