Technical Specifications
| Parameter |
Value |
| Manufacturer |
Rexroth, Made in Germany |
| Series |
A4VSO - Open Circuit Swashplate Axial Piston Variable Pump |
| Model Code |
A4VSO125DFR/30L-PPB13N00 |
| Geometric Displacement (Vg max) |
125 cm³/r |
| Nominal Pressure |
350 bar |
| Peak Pressure |
400 bar |
| Maximum Speed (nnom) |
Approx. 1900-2000 rpm |
| Theoretical Flow @1500 rpm |
Approx. 187.5 L/min |
| Theoretical Flow @1800 rpm |
Approx. 225 L/min |
| Drive Power @350 bar & 1500 rpm |
Approx. 109 kW |
| Control Type |
DFR - Pressure & Flow Compound Control (Pressure limit set via pilot port X; Flow demand set via pilot port Y — enables load-sense operation) |
| Rotation |
L - Left-hand (viewed from shaft end) |
| Flange & Port |
PPB13 - SAE Flange & SAE Port (compact porting, smaller than PPB25) |
| Through Drive |
N00 - Without Through Drive (tandem-ready variants available on other A4VSO sizes) |
| Hydraulic Fluid |
Mineral Oil HLP, HFC Water-Glycol Permissible (Derated) |
| Approximate Weight |
75-78 kg |
Rexroth Hydraulic Pump Series Models
A10VSO Series: A10VSO18, A10VSO28, A10VSO45, A10VSO71, A10VSO100, A10VSO140
A10VO Series: A10VO28, A10VO45, A10VO71, A10VO100, A10VO140
A2F Series: A2F10, A2F12, A2F28, A2F45, A2F55, A2F63, A2F80, A2F107, A2F125, A2F160, A2F200, A2F250, A2F500
A8VO Series: A8VO55, A8VO80, A8VO107, A8VO160
A4VSO Series: A4VSO40, A4VSO45, A4VSO56, A4VSO71, A4VSO125, A4VSO180, A4VSO250, A4VSO355
A4VG Series: A4VG28, A4VG45, A4VG50, A4VG56, A4VG71, A4VG125, A4VG180, A4VG250
A8V Series: A8V55, A8V80, A8V107, A8V115, A8V172
A10VD Series: A10VD17, A10VD21, A10VD28, A10VD43, A10VD71
A11V Series: A11V130, A11V160, A11V190, A11V250
A2FO Series: A2FO12, A2FO16, A2FO23, A2FO28, A2FO32, A2FO45, A2FO56, A2FO63, A2FO80, A2FO90, A2FO107, A2FO125, A2FO160, A2FO180
A2FE Series: A2FE55, A2FE80, A2FE107, A2FE125, A2FE160
A2FM Series: A2FM10, A2FM12, A2FM16, A2FM23, A2FM28, A2FM32, A2FM45, A2FM56, A2FM63, A2FM80, A2FM90, A2FM107, A2FM125, A2FM160, A2FM180
A6V Series: A6V28, A6V55, A6V80, A6V107, A6V160, A6V225, A6V500
A7V Series: A7V20, A7V28, A7V40, A7V55, A7V58, A7V80, A7V78, A7V107, A7V117, A7V160, A7V250, A7V355, A7V500
Vane Pump Series: PVV, PVQ, PV7
Gear Pump Series: 1PF2G3 - 3X/020RA07MB, 1PF2G3 - 30/026RA07MS, 1PF2G3 - 3X/029RD07MBK, 1PF2G3 - 30/026RD07MB
Other Series: AP2D21, AP2D25, AP2D36, AP2D38
Frequently Asked Questions
Q1: What is the difference between DFR and DR control on A4VSO?
A1: DR controls pressure only (spring or pilot set) and the pump typically runs at max displacement until pressure is reached. DFR adds a flow control pilot port (Y) so displacement — and thus flow — can be commanded by hydraulic pilot pressure, enabling load-sense operation and on-demand flow.
Q2: Can DFR be used without connecting pilot port Y?
A2: It can, but the pump will default to maximum displacement (or minimum if X is active). To benefit from flow control, port Y should receive a pilot pressure proportional to the desired flow demand, typically from a load-sensing valve or pilot pressure reducer.
Q3: What is the difference between PPB13 and PPB25?
A3: Both are SAE flanges/ports. PPB13 is the compact SAE port size, suited to manifold blocks on skid-mounted HPUs; PPB25 uses larger SAE ports for high-flow piped connections. Pump performance is identical.
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