Rexroth A4VSO250 Variable Pump | A4VSO250LR2S/30R-VPB13N00 | AA4VSO250
| Model Number | A4VSO250LR2S/30RVPB13N00 |
|---|
Product Description
The Rexroth A4VSO250 Series from LIC Hydraulic is a premier axial piston variable pump designed specifically for open-circuit industrial applications. Recognized for its heavy-duty swashplate design, the A4VSO250LR2S/30R-VPB13N00 delivers unmatched power density and reliability. We guarantee 100% mechanical interchangeability and subject every unit to 100% full-load performance and flow-response testing, ensuring professional performance at continuous pressures up to $350\text{ bar}$ ($5100\text{ psi}$).
Technical Configuration Details
Series: A4VSO (Standard Industrial) / AA4VSO (North American Standard).
Displacement: $250\text{ cc/rev}$.
Control Modes: LR2/LR3 (Power Control with Pressure Limiter), DR (Pressure Control).
Design Series: 30 Series for optimized efficiency and reduced noise.
Pressure Rating: $350\text{ bar}$ Continuous; $400\text{ bar}$ Intermittent.
Through-Drive: B13 configuration allows for full-torque auxiliary pump mounting.
Key Technical Advantages
High Load Stability: The reinforced swashplate and oversized bearings are engineered to handle continuous high-pressure cycles, making it the ideal “workhorse” for heavy industrial machinery.
Exceptional Noise Reduction: Precision-engineered valve plates significantly dampen fluid pulsation, resulting in a quieter operating environment and reduced stress on downstream components.
Dynamic Control Response: The LR2 and LR3 control modules offer lightning-fast adjustments to displacement, ensuring the hydraulic system consumes only the energy required by the current load.
Robust Seal System: Equipped with high-specification FKM (Viton) seals as standard (V designation), providing superior protection against high temperatures and synthetic fluids.
Application Areas
Heavy Industrial Presses: Forging, stamping, and extrusion presses.
Steel Processing: Primary hydraulic power for rolling mills and continuous casters.
Marine & Offshore: High-flow power units for deck machinery and steering gears.
Material Recycling: Drive systems for scrap metal balers and shears.
Expert Maintenance Tips
Initial Priming: Fill the housing with filtered hydraulic oil through the highest drain port before startup. A dry start on a pump of this size will cause catastrophic internal damage within seconds.
Case Drain Management: Ensure the drain line is plumbed directly to the tank with minimal back-pressure (below $2\text{ bar}$). High case pressure is the leading cause of shaft seal failure and slipper de-lamination.
LR Controller Calibration: When adjusting the LR power controller, always use a pressure gauge and flow meter to match the pump output to the motor’s capacity, preventing accidental stalls or electrical overloads.
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