Hydraulic Piston Pump A4VG40EZ2DM1/32R-NSC02F005DP, R902169081,R902158355

A4VG40EZ2DM1/32R-NSC02F005DP

Rexroth A4VG Series: High-Performance, Variable Displacement Axial Piston Pump for Closed-Loop Circuits

The Rexroth A4VG40EZ2DM1/32R-NSC02F005DP represents the pinnacle of hydraulic pump technology for demanding closed-loop hydrostatic drive systems. As part of the renowned A4VG series, this pump is engineered for exceptional power density, operational efficiency, and dynamic response. It is specifically designed for mobile and industrial applications where precise speed and torque control of hydraulic motors are critical, such as in travel drives for construction machinery, agricultural equipment, forestry machines, and material handling systems.

This unit is a swashplate design, variable displacement axial piston pump with an integrated charge pump and sophisticated electro-proportional (EP) control, enabling seamless integration into modern, electronically managed machine control architectures.

Model Number Decoding (A4VG40EZ2DM1/32R-NSC02F005DP)

· A4VG: Series designation for variable displacement axial piston pumps for closed circuits.
· 40: Nominal displacement of 40 cm³/rev (per revolution of the main pump).
· EZ: Control type: E = Electro-proportional displacement control, Z = With zero stroke adjuster (for precise control at neutral).
· 2: Version code for specific internal design features.
· D: Design series or variant.
· M1: Specific control manifold and valving configuration.
· 32R: 32 = Nominal size of the through-drive section (for daisy-chaining additional pumps). R = Rotation direction: Right-hand rotation (viewed from the shaft end).
· NSC02F005DP: Order-specific code denoting:
· NS: Special shaft end (specific to customer requirements).
· C02: Port connection style (e.g., SAE flanges or threaded ports).
· F005: Specific control electronics version (e.g., voltage, connector type, software characteristics).
· DP: Country-specific or special design code.

Key Features & Technical Advantages

1. Electro-Proportional Displacement Control (EZ):
· Provides precise, stepless control of pump swashplate angle (and thus output flow) via a proportional solenoid. The control current (e.g., 0-650 mA or 0-850 mA) is directly proportional to the pump's displacement and output flow, enabling excellent metering characteristics for smooth acceleration and deceleration.
2. Integrated Charge Pump & Supercharge Circuit:
· Features a built-in gear-type charge pump that supplies cool, filtered oil to the closed-loop circuit. This ensures constant lubrication, compensates for internal leakage, maintains supercharge pressure, and provides pilot flow for the control system, significantly enhancing reliability and service life.
3. Optimized for Closed-Loop Systems:
· The pump works in conjunction with a fixed or variable hydraulic motor to form a highly efficient hydrostatic transmission. This configuration allows for infinite variable speed control, four-quadrant operation (smooth forward/reverse and motoring), and exceptional power recovery capabilities during braking.
4. High Power Density & Pressure Capability:
· Built with robust components to withstand continuous operating pressures up to 400 bar (5800 psi) and peak pressures up to 450 bar (6500 psi), delivering maximum power from a compact package.
5. Through-Drive Capability (32R):
· The SAE through-drive allows for the direct mounting of additional hydraulic pumps (e.g., gear pumps for implement hydraulics) onto the same power source, simplifying drivetrain design and saving space.
6. Excellent Efficiency:
· Advanced design minimizes internal friction and leakage, resulting in high volumetric and overall efficiency across a wide operating range, reducing fuel consumption and heat generation.
7. Robust Construction & Long Service Life:
· Manufactured with high-grade materials and precision engineering, ensuring durability and reliable performance even in the harshest environments with wide temperature variations and high contamination loads (subject to proper filtration).

Typical Applications

· Mobile Machinery: Main drive pump for wheel loaders, excavators (travel drive), telescopic handlers, combine harvesters, forage harvesters, skidders, and drilling rigs.
· Industrial Drives: Precision winch drives, conveyor systems, mixer drives, and test stands requiring precise torque and speed regulation.
· Special Vehicles: Drives for airport ground support equipment, sweepers, and mining vehicles.
 

Note: For definitive specifications, performance curves, installation dimensions, and permissible operating conditions, always consult the official Rexroth A4VG Series Technical Data Sheet (RD 92702) and the specific documentation for the control option NSC02F005DP.