Rexroth A4VG Series Pump | A4VG28, A4VG40 | A4VG40EP4D1, A4VG28DGDT1 | Closed Circuit Piston Pump

Rexroth A4VG Series High-Pressure Closed Circuit Variable Piston Pump

Product Overview: The Rexroth A4VG series is the global benchmark for closed-circuit hydrostatic transmissions. Engineered specifically for mobile travel drives, this series features compact displacements including 28cc (A4VG28) and 40cc (A4VG40). Flagship models such as the A4VG40EP4D1 (Electric Proportional Control) and A4VG28DGDT1 (Hydraulic Control) integrate the charge pump, high-pressure relief valves, and control valve groups into a single unit, providing exceptionally precise speed control and direction reversal under rated pressures up to 400 Bar.

**Key Technical Advantages: **

• **Fully Integrated Closed-Circuit Design: ** Built-in charge pump and charge pressure relief valves simplify external plumbing, enhancing system response time and power density.

• **Advanced Control Architectures: **

  • **EP4 Control (EP4D1): ** Electric proportional control, supporting intelligent on-board systems for stepless speed regulation and smooth direction changes.

  • **DGDT Control (DGDT1): ** Hydraulic direct control, offering extreme stability and ease of maintenance in rugged off-road environments.

• **Ultra-High Pressure Reliability: ** Rated for continuous operation at 400 Bar (5800 PSI) with peak capabilities reaching 450 Bar, ensuring structural integrity under peak load cycles or shock loads.

• **Noise & Pulsation Suppression: ** Unique valve plate and swashplate damping technology drastically reduce fluid-borne noise, extending the service life of downstream hydraulic components.

• **Precision Smart Coding: **

  • **NSC/NUC Specs: ** Represent customized shaft ends, mounting flanges, and sealing configurations tailored for global OEM compatibility, ensuring seamless “plug-and-play” replacement.

**Detailed Models & Parameters: **

• **Core Series: ** Rexroth A4VG Series 32.

• **Representative Models: ** A4VG28DGDT1/32R-NSC10F045S, A4VG40EP4D1/32RNSC02F096DP, A4VG40EP4D1/32RNUC02F016DP.

• **Displacements: ** 28 cm³/rev, 40 cm³/rev.

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

• **Applications: ** Compact Road Rollers, Asphalt Pavers, Auxiliary Systems for Rotary Drilling Rigs, and Skid Steer Loaders.