Rexroth A4VG Series Pump | A4VG56, A4VG125 | EP4, DA, DW Control | 400 Bar Closed Circuit Pump

Rexroth A4VG Series (Series 32) Closed Circuit Axial Piston Variable Pump

Product Overview: The Rexroth A4VG series is a high-pressure swashplate-type axial piston variable pump specifically engineered for Closed Circuit hydrostatic transmissions. As the flagship of the proven Series 32 family, it features an integrated charge pump, high-pressure relief valves, and a wide array of precision control options. Covering displacements from the compact 56cc (A4VG56) to the heavy-duty 125cc (A4VG125), this series is designed to provide smooth, precise, and powerful traction for heavy-duty mobile machinery in the most demanding environments.

Key Control Methods & Technical Advantages:

• Diverse Precision Control Options:

  • EP4 Electric Proportional Control (A4VG125EP4): Allows for digital, precise modulation of displacement via proportional solenoids for smooth speed regulation.

  • DA Speed-Related Control (A4VG56DA2): Automatically modulates displacement based on engine speed, making it the premier choice for vehicle travel drives.

  • DW Hydraulic Direct Control (A4VG125DW): Utilizes hydraulic pilot signals for displacement adjustment, offering rapid system response.

• Heavy-Duty High-Pressure Performance: Designed for extreme load cycles, supporting a rated operating pressure of 400 Bar (40 MPa / 5800 PSI) and peak cycles up to 450 Bar. Reinforced rotating groups ensure extended service life under grueling conditions.

• Fully Integrated Closed-Loop Solution: Includes an integrated high-performance charge pump along with boost and high-pressure relief valves, streamlining circuit plumbing and enhancing thermal efficiency.

• Robust Thru-Drive Capability (F046/F001/F691): Features superior thru-drive functionality, allowing for tandem mounting of secondary pumps to facilitate compact multi-circuit power distribution.

Detailed Models & Parameters:

• Core Series: A4VG (Series 32).

• Detailed Config Codes: A4VG56DA2D2/32R-HTC02F046SP, A4VG125EP4D1/32R-NAF02F001BP, A4VG125DWDM1/32L-NAF02F691D-S.

• Displacements: 56 cm³/rev, 125 cm³/rev.

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

• Rotation: R (Clockwise) / L (Counter-clockwise).