Rexroth A4VG Series Pump | A4VG125 HDMT1 | Axial Piston Variable Pump | A4VG125HDMT1/32R

Rexroth A4VG Series 125cc High-Pressure Closed Circuit Variable Piston Pumps

Product Overview: The Rexroth A4VG series is the premier global standard for high-performance closed-circuit (Closed Loop) hydraulic drive systems. Designed as a swashplate-type axial piston variable displacement pump, this series is engineered to meet the rigorous demands of heavy-duty mobile machinery for precision control and massive power output. Featured models like the A4VG125HDMT1/32R-NSF02F021S-S and A4VG125HDMT1/32R-NSF02F691S-S provide a geometric displacement of 125 cm³/rev. With peak pressure capabilities up to 450 Bar, the A4VG125 is the core powertrain for excavator travel drives, road pavers, concrete pumps, and combine harvesters.

Key Technical Advantages:

• Precision HDMT1 Hydraulic Modulation: Features hydraulic proportional displacement control with pressure cut-off (DA function), ensuring smooth machine travel and protecting the engine from overloading under high-load conditions.

• Extreme High-Pressure Durability: Rated for continuous operation at 400 Bar (5800 PSI) with peak capabilities up to 450 Bar. The Series 32 design is specifically optimized to withstand frequent heavy-duty shock loads.

• Integrated Closed-Loop Functionality: Features a high-performance integrated charge pump and high-pressure relief valves to keep the main loop primed at high RPMs, preventing cavitation and improving cooling.

• Superior Power-to-Weight Ratio: The compact architecture allows for installation in tight engine compartments while delivering industry-leading torque output.

• Modular Through-Drive Capability: Supports tandem mounting of a second A4VG pump or auxiliary pumps, simplifying complex multi-circuit hydraulic drive layouts.

Detailed Models & Parameters:

• Core Series: Rexroth A4VG Series 32 (Closed Circuit).

• Model Keywords: A4VG125, A4VG125HDMT1, A4VG125HDMT1/32R, A4VG125HDMT1/32R-NSF02F021S-S, A4VG125HDMT1/32R-NSF02F691S-S.

• Displacement: 125 cm³/rev.

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

• Control Type: HDMT1 (Hydraulic Proportional Control with Pressure Cut-off/DA).

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