A4VSO71EO1/30L-PPB25N00 Rexroth Hydraulic Pump for Mining Vessels (Made in Germany)
Product Overview
The A4VSO71EO1/30L-PPB25N00 is an axial piston variable displacement pump from the Rexroth A4VSO Series 30, manufactured in Germany, and designed for open-circuit hydrostatic drives on mining vessels and offshore support ships. It uses a swash plate design where output flow is proportional to drive speed and displacement, with stepless adjustment via swash plate angle.
The EO1 control is an electro-proportional displacement control: an external analog signal (typically 0-10 V, ±10 V, or 4-20 mA via a proportional amplifier) sets the swash plate angle and therefore the pump flow, allowing the vessel's PLC or DP (dynamic positioning) controller to schedule winch, crane, conveyor, and hatch flows precisely. Rated at 350 bar nominal / 400 bar peak, it is built for continuous duty under seawater corrosion risk, vibration, and wide temperature swings typical of marine mining operations.
Technical Specifications (Size 71, Series 30)
| Parameter |
Specification |
| Model |
A4VSO71EO1/30L-PPB25N00 |
| Series |
A4VSO Series 30 (swash plate, open circuit) |
| Displacement (Vg max) |
71 cm³/rev |
| Nominal Pressure |
350 bar (35 MPa) |
| Peak Pressure |
400 bar (40 MPa) |
| Maximum Speed |
≈ 2200 rpm (size 71, dependent on suction conditions) |
| Flow @ 2200 rpm |
≈ 156 L/min (theoretical) |
| Flow @ 1500 rpm |
≈ 107 L/min (theoretical) |
| Power @ 350 bar / 2200 rpm |
≈ 91 kW |
| Power @ 350 bar / 1500 rpm |
≈ 62 kW |
| Torque @ 350 bar |
≈ 395 Nm |
| Rotation |
L - Left-hand (viewed from shaft end) |
| Control |
EO1 - Electro-proportional displacement control |
| Shaft |
P - DIN metric parallel keyed shaft (DIN 6885) |
| Seals |
P - NBR with FKM shaft seal |
| Mounting Flange |
B - ISO 3019-2 metric 4-bolt |
| Ports |
25 - SAE B pressure + SAE S suction, side 90° offset |
| Through-drive |
N00 - No auxiliary pump, no through-drive shaft |
| Fluid |
Mineral oil (HLP); HFC permissible under reduced data |
| Cleanliness |
ISO 4406 18/16/13 / NAS 1638 Class 9 recommended |
| Case Drain |
Two case drain ports, route to tank < 2 bar backpressure |
| Weight (approx.) |
≈ 54 kg |
Model Code Breakdown
- A4VSO - Axial piston variable pump, open circuit, swash plate design
- 71 - Nominal displacement 71 cm³/rev
- EO1 - Electro-proportional displacement control
- 30 - Series 30 construction
- L - Left-hand rotation
- PPB25N00 - P: NBR+FKM seals; P: parallel key shaft; B: ISO 4-bolt flange; 25: SAE side-offset ports with B1 plugged; N00: no through-drive / no aux pump
Key Features
- Made in Germany - Rexroth German production; original label, test sheet, and COO available on request.
- EO1 Remote Flow Command - Flow set by 0-10 V / ±10 V / 4-20 mA; integrates with vessel PLC/DP system.
- Mining-Vessel Ready - Short control response, excellent suction characteristics, low noise, robust bearings for shock/vibration cycles.
- 350 bar Continuous Duty - Hardened cylinder block, heavy-duty roller bearings, optimized port geometry for 24/7 marine operation.
- Swash Plate Variable Displacement - Infinitely variable flow, visual swivel angle indicator included.
- PPB25N00 SAE Side Ports - B1 opposite pressure port plugged with blank flange; simplifies hose routing in tight engine-room layouts.
- Through-Drive Body (N00 base) - Base variant without tandem shaft; same-size tandem pumps available under other suffixes.
Why Used on Mining Vessels
Mining vessels (seabed nodule collectors, offshore mineral handling ships, DP-class support vessels) require:
- Precise electronic flow split between anchor winches, A-frame cranes, conveyor feeders, and hatch covers
- High pressure (350 bar) with variable flow to reduce prime-mover throttling and heat generation
- Left-hand rotation (L) matched to specific gearbox input orientation on popular marine drivelines
- PPB25N00 SAE side ports for straightforward hose routing in tight engine compartments
- German-origin reliability for long voyages where onboard spare strategy is limited
Other Typical Applications
- Marine & Offshore - Anchor winches, deck cranes, steering gears, offshore platform hydraulic stations
- Mining & Material Handling - Crusher hydraulics, conveyor drives, mining loader power packs
- Industrial Automation - Test benches, CNC flow-programmed cells, press feeding systems
- Heavy Machinery - Injection molding machines, rubber vulcanizers, large press lines
Quality Assurance & Packaging
- Origin: Sourced from Rexroth Germany production channels; pre-shipment pressure/flow/leak test performed.
- Export Packaging: Fumigation-free wooden crate, VCI anti-rust film, corner protectors.
- Documentation: Commercial Invoice, Packing List, Certificate of Origin, factory test report.
- Warranty: 12 months against manufacturing defects.
Countries Available for Sale
We export genuine A4VSO71EO1/30L-PPB25N00 - Made in Germany worldwide. Active sales/export coverage includes:
- Europe: Germany, France, Italy, Spain, United Kingdom, Netherlands, Belgium, Switzerland, Austria, Poland, Czech Republic, Turkey, Sweden, Finland, Norway, Greece
- Asia-Pacific: China, India, Japan, South Korea, Malaysia, Thailand, Vietnam, Indonesia, Singapore, Australia, New Zealand
- Americas: United States, Canada, Mexico, Brazil, Argentina, Chile, Colombia, Peru
- Middle East: UAE, Saudi Arabia, Qatar, Kuwait, Oman, Israel
- Africa: South Africa, Egypt, Nigeria, Kenya, Morocco, Mauritania
- Marine Hubs: Singapore, Rotterdam, Antwerp, Dubai, Houston, Busan, Shanghai, Qingdao
Incoterms: EXW / FOB / CIF / DDP
Freight: DHL/FedEx/UPS for single-unit urgent orders; LCL/FCL sea for project batches. Full export docs provided.
Frequently Asked Questions
Q: Is the A4VSO71EO1/30L-PPB25N00 made in Germany?
A: Yes. This configuration is produced in Rexroth Germany facilities. We provide original label photos, test report, and COO on request.
Q: What is the difference between EO1 and EO2 control?
A: Both are electro-proportional displacement controls. EO1 uses a lower pilot pressure requirement (~20 bar) and is the standard electric-signal flow command. EO2 is the high-pilot-pressure variant for systems already providing higher pilot supply; both need an external proportional amplifier and separate system relief valve for pressure limiting.
Q: Can EO1 replace a DR or LR2G pump mechanically on the same vessel?
A: If displacement (71), rotation (L), shaft (P), flange (B), and ports (25) match, the pump mounts identically. Control behavior changes from pressure-hold or constant-power to electric-signal flow command—vessel PLC must be configured for EO1 and a system relief valve must be present.
Q: Does PPB25N00 mean SAE or metric ports?
A: Code 25 = SAE B (pressure) and SAE S (suction) flanges on the side, 90° offset, with metric mounting bolts; second pressure port B1 opposite B is plugged with SAE blank flange. Adaptors to ORFS/NPT are common but not built-in.
Q: Lead time?
A: Stock units 1-3 working days; non-stock or bulk orders 1-2 weeks depending on quantity.
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