Rexroth A4VSO Series Pump | A4VSO250DR, A4VSO250LR2G, A4VSO355 | Variable Piston Pump

Rexroth A4VSO Series Heavy-Duty Industrial Variable Piston Pump

Product Overview: The Rexroth A4VSO series is a high-performance, heavy-duty axial piston variable displacement pump designed for open-circuit industrial hydraulic systems. As the flagship displacements of the line, the A4VSO250 and A4VSO355 are renowned for their exceptional reliability in metal presses, forging machinery, injection molders, and steel mill power units. Featured models such as the A4VSO250DR/30R-PPB13N00 (Pressure Control) and A4VSO250LR2G (Power Control) deliver precise flow output and pressure feedback under continuous high-pressure conditions.

Key Technical Advantages:

• Superior Industrial Service Life: Engineered for continuous high-pressure duty cycles with specialized bearing designs that support tens of thousands of operating hours, significantly lowering TCO.

• Versatile Precision Control Mechanisms:

  • DR (Pressure Control): Automatically maintains preset system pressure, protecting the system and saving energy.

  • LR2G (Power Control): Implements constant power regulation, modulating displacement based on load pressure to prevent motor or engine overload.

  • DRG (Remote Control): Supports long-distance pressure adjustment via a pilot valve for enhanced operational flexibility.

• Low Noise & Vibration: Optimized valve plate designs and heavy-duty cast iron housings effectively suppress fluid pulsation and mechanical noise.

• 100% Industrial OEM Compatibility: Manufactured to strict Rexroth Series 30 mounting standards, ensuring flanges, shafts (keyed/splined), and porting match original power units perfectly.

• Excellent Self-Priming Performance: Maintains high suction efficiency even under lower charge pressure conditions.

Detailed Models & Parameters:

• Core Series: Rexroth A4VSO Series 30.

• Representative Models: A4VSO250DR/30R-PPB13N00, A4VSO250LR2G/30R-PPB13N00, A4VSO355DRG/30R-PPB13N00.

• Displacement: 250 cm³/rev, 355 cm³/rev.

• Pressure Ratings: Rated at 350 Bar (5000 PSI) continuous; Peak capability up to 400 Bar.

• Rotation: R (Clockwise/CW).

• Target Applications: Large hydraulic presses, aluminum extrusion machines, scrap balers, and power stations for steel and power industries.