Model code — A4VSO71DR/10R-VPB25N00
Decoded position by position against the RE 92050 model code table (14 positions). Positions 09–14 form one continuous options string without separators; this unit reads as follows:
| Position | Value | Meaning |
|---|---|---|
| 01 Hydraulic fluid | — | omitted — mineral oil + HFD |
| 02 Unit | A4VS | swashplate variable pump (350 bar nominal / 400 bar peak) |
| 03 Boost pump | — | omitted — no boost pump (L only on NG750) |
| 04 Mode | O | open circuit |
| 05 Size (NG) | 71 | nominal size NG71 |
| 06 Controller | DR | pressure control (constant pressure) |
| 07 Design series | 10 | Series 1x (NG40 / 71) |
| 08 Rotation | R | clockwise, viewed from the drive shaft end |
| 09 Seal material | V | FKM fluoroelastomer (suitable for HFD) |
| 10 Drive shaft | P | straight key shaft, DIN 6885 |
| 11 Mounting flange | B | ISO 3019-2 metric 4-hole (NG40–500) |
| 12 Work ports | 25 | as 13 plus a second pressure port B1 on the opposite side with cover plate |
| 13 Through-drive flange | N00 | no through drive |
| 14 Filtration | — | omitted — no filter |
Note: P in position 09 is a seal code, while P in position 10 is a straight key shaft — the same letter has two different meanings. H in position 11 is the ISO 3019-2 eight-hole flange (NG500 / 750 / 1000).
Product overview
New aftermarket A4VSO71DR/10R-VPB25N00 axial piston pump. Swashplate-type variable displacement pump for open circuit, from the A4VSO Series 10/11/30 family. Size NG71, geometric displacement 71 cm3/rev.
Nominal pressure 350 bar, peak pressure 400 bar. Maximum drive speed 2200 rpm at Vg max; flow approx. 107 L/min at 1500 rpm. Swashplate design with low noise level and short response times; suitable for mineral oil and HFD fluids (FKM seals version on request).
This listing covers the A4VSO71DR/10R-VPB25N00 pressure-controller version. Supply is as a new aftermarket replacement unit, quality checked before shipping. Because the full model code defines mounting, seals, shaft and ports, please send us your complete nameplate code before ordering and we will confirm the exact configuration.
Control: DR pressure controller
The DR control limits the pump pressure to the set value on the pressure port B. In its basic position the swashplate is at maximum displacement; when the set pressure is reached, the pump swivels back to approximately zero displacement and only delivers the flow required to maintain pressure.
- Pressure control set at factory to your requested value
- Pressure limitation adjustable within the nominal pressure range
Other sizes
Other A4VSO sizes and controls are available on request – sizes NG40 to NG1000 (40/71/125/180/250/355/500/750/1000 cm3) and controls such as DFR, LR, MA, EM, HS and DFE1. Send us your requirements.
Other models on this size
This NG71 pump is also available in these variants:
- A4VSO71DR/10R-VPB13N00 — DR pressure control
- A4VSO71DR/10R-PPB13N00E — DR pressure control
- A4VSO71DR/10R-PPB13KB5-SO103 — DR pressure control
- A4VSO71DFR/10L-PPB13N00-SO86 — DFR pressure and flow control (load sensing)
- A4VSO71DFR/10R-PPB13N00-SO86 — DFR pressure and flow control (load sensing)
Series overview: A4VSO Piston Pump. Other sizes and controls (NG40 to NG1000): Piston Pumps.
Not sure what you need? Tell us your machine model or send the full code from the nameplate and we will confirm the correct configuration. Contact us
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