Rexroth A4VSG Series Closed Circuit Pump | A4VSG180, A4VSG500 | HS & HD Control

Rexroth A4VSG Series Heavy-Duty Closed Circuit Variable Piston Pump

Product Overview: The Rexroth A4VSG series is a high-pressure axial piston variable pump specifically engineered for Closed Circuit systems. It is widely utilized in marine winch drives, heavy-duty injection molding machines, metal extrusion presses, and various industrial equipment requiring frequent directional changes and precise speed control. Renowned for its superior power-to-weight ratio and exceptional stability under extreme loads, the A4VSG series—from the servo-controlled A4VSG180HS to the high-displacement A4VSG500HD1—delivers unparalleled dynamic response.

Key Technical Advantages:

• Precision Closed-Circuit Control (HS/HD): The model A4VSG180HS/30R-PPB10K019N utilizes HS hydraulic servo control for millisecond-fast linear flow and pressure modulation. The A4VSG500HD1T/30L-PZH10I449N variant leverages HD hydraulic direct control to maintain robust handling even under high-inertia loads.

• Reliability Under Extreme Pressure: Designed for rated pressures of 350 Bar and peak cycles up to 400 Bar. The reinforced swashplate bearing structure ensures maximum volumetric efficiency is maintained throughout continuous heavy-duty duty cycles.

• Integrated System Solutions: The pump housing integrates the charge pump and all necessary control valve groups for closed-circuit operation, significantly simplifying hydraulic plumbing and reducing potential leakage risks.

• Thru-Drive Capability: The A4VSG series supports 100% thru-torque transfer, allowing for the tandem mounting of auxiliary pumps to provide a compact power solution for multi-circuit systems.

Specific Models & Technical Parameters: This product line features core configurations: A4VSG180HS/30R-PPB10K019N, A4VSG500HD1T/30L-PZH10I449N, and the full A4VSG180/500 series. Key specifications: Displacements from 180 cm³/rev up to 500 cm³/rev; rated operating pressure of 350 Bar; peak pressure up to 400 Bar; support for Clockwise (R) or Counter-Clockwise (L) rotation; equipped with standard ISO mounting patterns and specific splined shafts.