Rexroth A4VG Series Pump | A4VG56DA, A4VG71DA | 400 Bar Closed Circuit Pump

Rexroth A4VG Series Closed Circuit Axial Piston Variable Pump

Product Overview: The Rexroth A4VG series is a high-performance axial piston variable pump specifically engineered for Closed Circuit hydrostatic transmissions. As a core model within the proven Series 32 family, it integrates a charge pump, high-pressure relief valves, and advanced control modules. Featuring the DA Automatic Drive Control (speed-related regulation), this pump senses engine RPM and modulates displacement automatically, providing smooth driving characteristics and peak fuel efficiency for mobile machinery like loaders and telehandlers.

Key Technical Advantages:

• Intelligent DA Automatic Drive Control: Models such as A4VG56DA2D2 and A4VG71DA1D utilize sophisticated DA control logic. This speed-dependent regulation optimizes tractive force distribution, prevents engine stalling, and lowers overall emissions.

• Heavy-Duty High-Pressure Performance: Designed for extreme load cycles, supporting a rated pressure of 400 Bar (40 MPa) and peak cycles up to 450 Bar. Reinforced swashplate supports and axial piston groups ensure extended service life under grueling conditions.

• Fully Integrated Closed-Loop Solution: Includes a fully integrated charge pump along with boost and high-pressure relief valves. This drastically simplifies circuit plumbing, reduces heat generation, and eliminates potential leak points.

• Robust Thru-Drive Capability (F045/F001): Equipped with superior thru-drive functionality, allowing for tandem mounting of auxiliary pumps (gear or piston types) to streamline compact power distribution.

Detailed Models & Parameters:

• Core Series: A4VG (Series 32).

• Detailed Config Codes: A4VG56DA2D2/32R-NTC02F045SP, A4VG71DA1DA3L/32R-NTC02F001S.

• Displacement: 56 cm³/rev, 71 cm³/rev.

• Pressure Ratings: Rated at 400 Bar (5800 PSI); Peak cycles up to 450 Bar (6500 PSI).

• Control Methods: DA (Automatic Drive Control / Speed-related regulation).