Product Overview The Rexroth A4VG140 Variable Pump forms the foundation of highly efficient closed-loop hydraulic systems. Flow is proportional to the drive speed and displacement, and the flow direction changes smoothly when the swashplate is moved through the neutral position. The pump comes standard with two high-pressure relief valves to protect the hydrostatic transmission (pump and motor) from dangerous overloads.
Why Choose the Rexroth A4VG Series?
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Integrated Boost Pump: Acts as a feed pump to replenish leakage fluid and provide necessary control pressure, simplifying system design.
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Advanced EP Control: The electric proportional control with a proportional solenoid allows for seamless integration with modern vehicle electronics and PLCs.
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Pressure Cut-off (D1): Automatically limits maximum system pressure to prevent engine stalling and protect hydraulic components.
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Through-Drive Capability: Allows the direct mounting of additional pumps (like gear pumps for auxiliary circuits) on the same drive shaft, saving space and cost.
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Heavy-Duty Bearings: Designed for long service life even under extreme high-pressure and high-vibration conditions typical in mobile equipment.
Common Applications:
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Construction Machinery: Wheel loaders, excavators, road rollers, skid steer loaders.
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Agricultural Equipment: Combine harvesters, heavy-duty tractors, self-propelled sprayers.
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Material Handling: Large forklifts, reach stackers, telehandlers.
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Mining & Forestry: Feller bunchers, underground loaders.
| Specification | Value / Description |
| Product Type | Variable Displacement Axial Piston Pump |
| Circuit Type | Closed Circuit (Hydrostatic Drive) |
| Series | A4VG (Series 32) |
| Displacement ($V_{g max}$) | 140 cm³/rev |
| Nominal Pressure | 400 bar (5800 psi) |
| Peak Pressure | 450 bar (6500 psi) |
| Max. Speed | Approx. 2900 rpm (depending on application limits) |
| Model Breakdown | A4VG 140 EP4 D1 / 32 R – N A F02 F02 1 D P – S |
| – A4VG | Swashplate variable pump, closed circuit |
| – 140 | Size: 140 cc/rev |
| – EP4 | Control: Electric proportional, 24V DC solenoid |
| – D1 | Pressure cut-off included |
| – 32 R | Series 32, Right (Clockwise) rotation |
| – N A | NBR seals, Splined shaft (DIN 5480) |
| – F02 F02 | SAE J744 mounting flange (4-hole) & SAE flange ports |
| – 1 D P | With integrated boost pump, Through-drive, High-pressure relief valves |
| – S | Standard version |
Note: The A4VG series pairs perfectly with the Rexroth A6VM or A2FM hydraulic motors to form a complete hydrostatic transmission system.
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