Rexroth A4VTG Series Mixer Pump | A4VTG071, A4VTG090 | A4VTG090HW100 for Transit Mixer

A4VTG Series Axial Variable Piston Pump for Concrete Transit Mixers

Product Overview: The Rexroth A4VTG series is a high-pressure axial piston variable pump specifically engineered for the drum drives of Concrete Transport Mixers. As the power core of closed-circuit hydraulic systems, the A4VTG series is the global industry standard due to its superior compactness, high-pressure durability, and precision control logic. Whether the flagship A4VTG090HW100 or the lighter A4VTG071, this series ensures smooth drum rotation and efficient discharge even under heavy-duty loading conditions.

Key Technical Advantages:

• Mixer-Specific HW Manual Servo Control: The model A4VTG090HW100/33MRNC4C92F0000AS-Y features the classical HW manual servo control. This allows operators to precisely modulate displacement and rotation direction via simple mechanical linkages, enabling infinitely variable speed control of the mixer drum.

• Highly Integrated Architecture: The A4VTG integrates an internal charge pump, high-pressure relief valves, and pressure-limiting devices. This all-in-one solution simplifies hydraulic plumbing on the mixer truck while providing exceptional cushioning during directional reversals.

• Extreme Reliability: Designed for continuous heavy-duty cycles and dusty environments, supporting rated pressures up to 400 Bar (450 Bar peak). The reinforced swashplate bearing structure ensures vibration resistance and an extended maintenance-free service life.

• Seamless Compatibility: The A4VTG090 range offers various standardized flanges and shaft options (e.g., C4C92 config), ensuring a perfect match with leading mixer reduction gearboxes such as ZF, PMP, and Bonfiglioli.

Specific Models & Technical Parameters: This product range includes core configurations: A4VTG090HW100/33MRNC4C92F0000AS-Y, A4VTG071HW, and the full A4VTG090 series. Key specifications: Displacements of 71 cm³/rev or 90 cm³/rev; rated operating pressure of 40 MPa (400 Bar); maximum speeds up to 3000-3500 rpm; HW (Hydraulic Manual Servo) control logic; and standard SAE mounting patterns.