Anyone who has looked for hydraulic pump parts knows the hardest step is the first one: working out which series you are dealing with. Manufacturer designations look like random strings of characters, and every company uses its own system.
We have gathered in one place the series that genuinely turn up in workshops and service shops. The list serves one purpose: find your designation on it and you will know what to look for. If you are not sure where to read the designation from, start with How to read the nameplate on a hydraulic pump or motor.
How to use this list
Press Ctrl+F and type your designation, for example A10VSO or K3V112. Your browser will highlight the place on the list.
In most systems the number in the designation is the pump displacement or motor displacement in cm³ per revolution. A10VSO45 is 45 cm³/rev, K3V112 is 112 cm³/rev. The segment after the slash, such as /31 or /52, indicates the design series and matters when selecting repair kits.
The list covers axial piston pumps and motors, that is the units most often needing overhaul or replacement. It does not cover gear pumps or steering units, which we will describe separately.
Bosch Rexroth
The largest and most elaborate designation system in the industry. The leading letter A indicates an axial piston design.
Variable pumps for open circuits: A10VO 10, 18, 28, 45, 60, 63, 71, 72, 74, 85, 100, 110, 140, 180 in /31, /52 and /53 versions. A10VSO 18, 28, 45, 71, 74, 100, 110, 140 /31. A10VNO 28, 41, 44, 45, 63, 85 /52 and /53. A10CO and A10CNO 45, 63 /52.
Larger displacement pumps: A4VSO 40, 45, 71, 125, 180, 250, 355, 500, 750, 1000 /30. A4VO 56, 90, 130. A4V 40, 56, 71, 90, 125, 250. A11VO and A11VLO 40, 60, 75, 95, 130, 145, 190, 200, 210, 250, 260. A15VSO 145, 210, 280.
Bent axis pumps: A7VO 28, 55, 80, 107, 160, 250, 355, 500, 1000 /6. A7VLO 250. A7VTO 55, 80, 107, 160, 200. A8VO 28, 55, 80, 107, 160 /6 and 80, 107, 120, 140, 200 /63, then A8VO 225 /72 and A8VTO 107.
Closed circuit pumps: A4VG 28, 40, 45, 56, 65, 71, 85, 90, 105, 110, 125, 140, 145, 175, 180, 210, 250, 280 in /32 and /40 versions. A10VG 18, 28, 45, 63 /10. A11VG 12, 19, 35, 50. A20VG 045 and A22VG 045. A4VTG 56, 71, 90.
Fixed displacement pumps: A2FO 10, 12, 16, 23, 28, 32, 45, 56, 63, 80, 90, 107, 125, 160, 180, 200, 250, 355, 500, 755, 1000. A4FO 22, 28, 40, 107, 500. A17FO 63, 80, 107 /10. A10FM and A10FE 10, 11, 14, 16, 18, 23, 28, 37, 45, 58, 63 /52.
Motors: A6VM and A6VE 28, 55, 60, 80, 107, 140, 160, 200, 215, 250, 355, 500 in series 60, 61, 70 and 71. A2FM and A2FE in the same sizes as A2FO. A10VM and A10VE 28, 45, 60, 63, 80, 85 /52. A11VM 60 to 130.
Older designs: A2F, A2V, A6V, A7V, A8V from series 1 to 5, recognisable by the skirted piston.
Large units for heavy machinery: A20VLO 190 and 260 /10, A28VO 130 and 280.
Sauer Danfoss
A system built on series numbers rather than letters. The series number describes the design, the three digit figure the size.
Series 90: pumps 90R and 90L in sizes 30, 42, 55, 75, 100, 130, 180, 250, and motors 90M 42, 55, 75, 100, 130, 180. The most common travel drive in construction machinery.
Series 51: motors 51V and 51D in sizes 60, 80, 110, 160, 250.
Series 45: the letter codes define the control type. ERR and ERL 100, 130, 147. FRR and FRL 074, 090. GRR and GRL 074, 090. HRR and HRL 057, 075. JRR and JRL 045, 051, 060, 065, 075. KRR and KRL 038, 045. LRR and LRL 025, 030.
Series 42: 42R and 42L in sizes 28, 32, 41, 51.
Series 40: MPV, MPT, MMF, MMV and M46 in sizes 025, 035, 044, 046.
Series 20: PV 20, 21, 22, 23, 24, 25, 27 and SPV 6-119.
Series 10: SPV 15 and 18, size 038.
Series H1: pumps H1P 045, 053, 060, 068, 069, 078, 089, 100, 115, 130, 147, 165 and motors H1B 060, 080, 110, 160, 250. The newer generation, fitted to machines built after 2010.
Others: D1P 130, 145, 193, 260. MP1 28, 32, 38, 45. MF16A, TMM 070, 084, 089, TMP 070, 089, LC 25, 30, 35, KC 38, 45, BRL 28 and 45.
Linde Hydraulics
The leading letter denotes the design range, the following letters the function. P is a pump, M a motor.
Variable pumps: HPR-01 and HPR-02, HPR75X-01, HPR105D-02, HPR130D-01, HPR160D-01. BPR-01, MPR 43, 50, 63-01 and PR 35, 50, 75, 105, 186T.
Variable displacement pumps: HPV-01 and HPV-02, BPV-01, BPVX, MPV 43 and 63-01, PV 35, 50, 75, 105, 186T.
Fixed pumps: HPF 55 and 105-02, B2PF20-01, MPF55-01, MF-PF.
Variable displacement motors: HMV-01 and HMV-02, BMV-01 and BMV-02, MV 50, 75, 105, 140, 186T.
Fixed motors: HMF-02, HMF 43, 50, 70-01, BMF-01, MMF 35, 43, 63-01.
Pressure controlled motors: HMR-02, HMR90-01, BMR-01, MR 105 and 140T.
Kawasaki
Dominant in Japanese and Korean excavators. The number in the designation is the size of one section.
Main pumps: K3V 28, 63, 112, 140, 180 and K5V 80, 112, 140, 160, 200, 212 in DT, DP and S builds. K3V63BDT and K3V112BDT. K7V 28, 63, 125, 140, 160, 280DT. K3VL 28, 45, 80, 112, 140. K3VG 63, 112, 180, 280, 560DT. K3SP36 and K7SP36.
Swing motors: M2X 63, 96, 120, 146, 150, 170. M5X 80, 130, 180, 250. M3X350. M4V150. MX 150, 173, 500, 750. M7V 112, 160, 212.
Travel motors: MAG 18, 80, 150, 170. MSF 89, MSF-50-48. GM 05, 06, 07, 08, 09, 17, 18, 21, 24, 30, 35, 38 in VA and VL versions.
Others: NV 64, 84, 111, 137, 172, 270. NVK45, NX15, KVC 925, 930, 932, LZV120W, DNB08 and DNB50.
Liebherr
Fitted to their own excavators and loaders. The number is the size in cm³/rev.
Pumps: LPVD 045, 064, 075, 090, 100, 107, 125, 140. LPV 150, 165, 250. DPVP108, DPVO165, DPVG280.
Motors: FMF 032, 045, 058, 064, 090, 100 as swing motors. LMV 125 and 140 as travel motors.
Parker
Piston pumps: PV 023, 032, 040, 046, 063, 074, 080, 092, 140, 180, 270. P2 060, 075, 105, 145. PVT64, PVP23X400, PVP33369R, PMP12, PLV250.
Bent axis motors: F11 in sizes 5, 10, 19, 39, 110, 150, 250 and F12 in sizes 30, 40, 60, 80, 90, 110. Variable motors V12 060, 080, 110, 160 and V14 110, 160.
Eaton Vickers
Pumps: PVB 5, 6, 10, 15, 20, 29. PVE 12, 19, 21. PVH 45, 57, 63, 74, 81, 98, 106, 131, 141. PVM 074, 098, 131. PVQ 10, 13, 20, 25, 32, 40, 45. ADU 041, 049, 062, 080.
Motors: MVE19, MFE 15 and 19, JMV053.
Older numeric series: fixed motors 3331, 3333, 3931, 3933, 4631, 4633, 5431, 5433, 6431, 6433. Variable motors 3341, 3343, 3941, 3943, 4641, 4643, 5441, 5443, 6441, 6443. Variable pumps 3321, 3323, 3921, 3923, 4621, 4623, 5421, 5423, 6421, 6423 and 3320, 3920, 4620, 5420, 7620. Then 70412, 70423, 70523, 70553, 72400, 74318, 78462.
Kayaba, also known as KYB
Travel motors: MSF 18, 23, 30, 46, 53, 85, 140. KMF 40, 90, 105. MAG18, MAG33VP, MAG-26VP.
Swing motors: MSG27P, MSG44P, MSG60.
Pumps: PSVD, PSVL, PSVK2-25, PSV2-55T, PSV2-66T. Designations KYB 25, 36, 37, 87, 90.
Nachi
Pumps PVD-0B, PVD-00B, PVD-1B, PVD-2B, PVD-3B and PVD45. Pumps PVK-0B, PVK-2B, PVK-3B. Found in mini excavators and compact loaders.
Uchida
Pumps A10VD 17, 28, 40, 43, A10VE43, A10V 43 and 63, A10F25, A10FL25. Then A8V 55, 86, 115, 172, A7VO250EL and the AP2D 12, 16, 18, 21, 25, 36, 38 and AP5S 53, 72 series. The designations resemble Rexroth because Uchida produced under licence, but parts are not always interchangeable.
Toshiba, Yuken, Mitsubishi
Toshiba: pumps PV 080, 090, 092 and motors SG02, SG04, SG08, SG12, SG20, SG025, corresponding to the designations MFB 40, 80, 160, 250.
Yuken: pumps A22, A37, A45, A56, A70, A90, A145.
Mitsubishi: MKV11, MKV23, MKV33.
Hawe and Hengli
Hawe: V30D 045, 075, 095, 115, 140, 160, 250. V30E 095, 160, 270. V30Z-095. V60N 060, 090, 110, 130.
Hengli: V90N 130, 180, 230, 280 and HP5V 28, 45, 60, 76, 85, 105.
Identified by machine, not by pump
Some machine manufacturers use their own catalogue numbers instead of pump series designations. In that case identification starts from the machine.
Caterpillar: main pumps SBS80, SBS120, SBS140, AP12, VRD63, SPK1010 and catalogue numbers such as 311-7404, 191-2592, 296-3867, 8J-6853, 8J-6855, 4T-2506, 4T-2767, 3G-7230, 112-5381, 384-9438. Travel motors 107-7029, 087-4827, 190-5970, 232-6180, 470-9606.
Hitachi: pumps HPV 050, 091, 102, 116, 118, 125, 145 and HPK 055, 060, 170BS, 300. Motors HMV 116 and 145, HMT 045, 107, 134, HMK 078, 123, 160, HMGF 18 and 84, HMGE09, MSF 250, 270, 340.
Doosan: motors TM09, TM18VC, TM70VC, TM100, TSM72 and numbers 170303-00049B, 170303-00065, 401-00457B, 7020242.
Hyundai: numbers such as 31N6-40051, 31Q4-11133, 38Q8-11101, 39Q6-41101, XJCK-00123, assigned to models R150LC-9, R260LC-9S and others.
Volvo: PVG 65, 75, 100, 130 and SBHTM140-95.
Komatsu and Kobelco: identification is almost always by machine model, for example PC20, PC60, PC200, PC300, PC400, SK200, SK320, SK430.
Drive axles and gearboxes
Axles and gearboxes use their own numbering conventions, different from hydraulics and different from each other. Carraro, Dana Spicer and ZF designations, along with the rules for writing them down, are covered in Drive axle and gearbox numbers. How to read the plate.
Your series is not on the list
The list covers the designs encountered most often, but not every one of them. If your designation is missing or the plate is unreadable, send us photos of the unit along with the machine make, model and year. We identify parts for units outside the catalogue too, since we source them to order.
Check availability under Hydraulic pumps and Hydraulic motors. You can send an enquiry from our Contact page.
With your enquiry include a photo of the nameplate and a photo of the complete unit with the shaft visible. With that set we normally reply with price and lead time the same working day.
Frequently asked questions
What does the number in a series designation mean?
In most systems it is the pump displacement or motor displacement in cm³ per revolution. A10VSO45 has 45 cm³/rev, K3V112 has 112 cm³/rev.
What does the segment after the slash mean, such as /31 or /52?
It is the design series. The same range in different series has different internals, so repair kits are not always interchangeable. It has to be quoted when ordering parts.
Is an Uchida A10VD the same as a Rexroth A10V?
No. Uchida produced under licence and the designations are similar, but parts do not always fit. The manufacturer has to be established from the plate.
I only have the machine number, is that enough?
With Caterpillar, Komatsu, Hyundai and Kobelco often yes, because identification there does run by machine. With Rexroth, Danfoss or Linde the designation from the pump plate is required.