Rexroth A4VG125 Pump | A4VG125EP2 | A4VG125DA2 | High Pressure Variable Piston Pump

Rexroth A4VG125 Series 32 High-Pressure Closed Circuit Variable Piston Pumps

Product Overview: The Rexroth A4VG125 serves as the primary power component for high-performance closed-circuit hydrostatic transmissions. Specifically engineered for heavy-duty mobile machinery, this Series 32 pump delivers ultimate power density and precision. With its 125cc (A4VG125) displacement, it supports various control modalities including EP2 (Electric Proportional with Pressure Cut-off) and DA2 (Speed-Related Hydraulic Control). Featured models like the A4VG125EP2D1/32RNZF02F001DH-S represent the pinnacle of reliability. Its highly integrated design merges the charge pump and high-pressure relief valve blocks, providing robust power for rotary drilling rig drives, concrete pump main systems, and heavy industrial presses.

Key Technical Advantages:

• Versatile Control Logic: Supports EP (Electric Proportional) for precise digital modulation and DA (Speed-Related Control) for automatic drivetrain optimization based on engine RPM.

• Extreme Pressure Capability: Rated for continuous operation at 400 Bar (5800 PSI) with peak capabilities up to 450 Bar, ensuring consistent traction under maximum loading.

• Integrated Architecture: The pump body integrates a high-performance charge pump and pressure protection valves, drastically simplifying hydraulic plumbing and reducing potential leak points.

• Superior Volumetric Efficiency: Optimized 9-piston swashplate design maintains high output power while ensuring exceptionally low operational noise and internal leakage.

• Robust Drivetrain Options: Offers diverse spline shaft configurations (such as 26T-9T), ensuring high-strength, reliable connections with transfer cases or engine PTOs.

Detailed Models & Parameters:

• Core Series: Rexroth A4VG Series 32.

• Model Keywords: A4VG125, A4VG125EP2, A4VG125DA2.

• Full Config Codes: A4VG125EP2D1/32RNZF02F001DH-S, A4VG125DA2D2/32R-NAF02F011BP.

• Displacement: 125 cm³/rev (7.63 in³).

• Pressure Ratings: Rated at 400 Bar (5800 PSI) continuous; Peak capability up to 450 Bar (6525 PSI).

• Spline Specs: 26T (Main) – 9T (Through-drive) and other configurations.

• Target Applications: Rotary drilling rig travel, heavy rollers, concrete pump trucks, and offshore winch drives.