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A4VSO125DFR/30L-PPB25N00 German Rexroth Piston Pump
A4VSO125DFR/30L-PPB25N00 German Rexroth Axial Piston Pump - Variable Displacement for Open Circuit
The A4VSO125DFR/30L-PPB25N00 is a high-performance swashplate-type axial piston variable pump manufactured by German Rexroth (Rexroth), designed specifically for open-circuit hydrostatic drives. With a nominal displacement of 125 cm³/r, it delivers reliable flow proportional to drive speed and offers infinite flow adjustment via swashplate angle. This model features DFR (Pressure/Flow Control), making it ideal for industrial machinery requiring precise hydraulic regulation under continuous 350 bar operation.
Core Highlights
Genuine German Rexroth Design - Full interoperability with original systems
DFR Compound Control - Integrated pressure & flow regulation for energy saving
High Pressure Rating - 350 bar nominal / 400 bar peak pressure capability
Through-Drive Option - Allows mounting of additional pumps up to same nominal size
Low Noise & Long Service Life - Optimized bearing and sealing design
Model Code Breakdown
Understanding the A4VSO125DFR/30L-PPB25N00 configuration ensures correct replacement and system matching:
Code Segment
Meaning
Specification
A4VSO
Series
Swashplate axial piston variable pump, open circuit
125
Displacement
125 cm³/r (125 mL/rev)
DFR
Control Mode
Pressure / Flow Control (Compound)
30
Series Version
30 Series (Standard industrial version)
L
Rotation Direction
Counter-clockwise (viewed on shaft end)
PPB25N00
Seal & Port Configuration
NBR seals, SAE ports, standard flange, no through-drive
Compatible with mineral oil (HLP) per DIN 51524. FKM (Viton) seals available upon request for phosphate ester or high-temperature fluids.
Technical Specifications
Parameter
Value
Unit
Nominal Displacement (Vg max)
125
cm³/r
Nominal Pressure (p nom)
350
bar
Maximum Pressure (p max)
400
bar
Maximum Speed (n max)
1800 - 2200
rpm
Flow Rate @ 1500 rpm
~187
L/min
Power Requirement @ 350 bar
~109
kW
Torque @ 350 bar
~696
Nm
Weight (approx.)
~55
kg
Fluid Temperature Range
-20 to +80
°C
Optimum Viscosity Range
16 - 36
mm²/s
Oil Cleanliness Requirement
ISO 4406 Class 20/18/15 or better
--
Key Features & Benefits
Unlike standard fixed displacement pumps, the A4VSO125DFR adapts to system demand:
Energy Efficiency: The DFR control prevents unnecessary energy loss by adjusting flow and pressure simultaneously, reducing heat generation in large hydraulic presses and power units
Robust Suction Characteristics: Engineered for stable operation even under demanding inlet conditions, minimizing cavitation risk in mining, metallurgy, and offshore equipment
Modular Maintenance: The Series 30 design allows easy replacement of control blocks without disconnecting the pump from piping, reducing downtime by up to 30%
Quiet Operation: Optimized swashplate bearing and piston-shoe interface ensure low noise levels (<75 dB(A) typical at rated conditions)
Common Applications
This German Rexroth piston pump is widely used in:
Plastic Injection Molding - High-flow clamping units and injection units
Hydraulic Test Benches - Power units requiring precise variable flow and pressure control
Packaging & Quality Assurance
Inspection: 100% performance tested on a calibrated hydraulic test bench before shipment (noise level, flow curve, pressure holding test)
Packaging: Anti-rust VCI paper wrapping + heavy-duty plywood export crate (ISPM 15 compliant for sea/air freight)
Warranty: 12-month limited warranty against manufacturing defects from date of shipment
Documentation Included: Inspection certificate, packing list, and declaration of conformity
Frequently Asked Questions (FAQ)
Q: Is this A4VSO125DFR/30L-PPB25N00 a genuine German-made unit?
A: Yes, we supply original Rexroth Germany stock units with full traceability and serial numbers. Factory-authorized remanufactured units with equivalent performance are also available. Please specify your preference when inquiring.
Q: Can the DFR control be changed to DR or LR control?
A: Yes. The A4VSO125 housing supports interchangeable control covers (DR, LR, DFR, EO). However, internal orifice settings must be adjusted accordingly. We can supply pre-configured units to match your system requirements.
Q: What is the typical lead time for this pump?
A: For in-stock items: 1-3 business days. For non-stock or customized configurations (e.g., FKM seals, special shaft extensions): 2-4 weeks including full testing.
Q: Do you provide technical drawings or CAD files?
A: Yes. We can provide dimensional drawings and 3D models (STEP/IGES format) upon request for integration into your machine design.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
