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The Rexroth A4V and A4VD axial piston variable pumps are designed for use in high-pressure hydraulic systems, providing efficient and reliable performance for a range of industrial and mobile applications. With advanced swashplate technology, these pumps deliver consistent flow and pressure while offering excellent control and durability.
Key Features:
High Pressure and Efficiency:
Nominal pressure up to 400 bar and peak pressure up to 450 bar, ensuring reliable operation in demanding systems.
High volumetric efficiency reduces energy consumption and heat generation, improving system efficiency.
Flexibility in Operation:
The A4VD model integrates two A4V pumps in a tandem configuration, enabling independent control of two circuits from a single input drive.
Offers smooth flow direction changes and precise displacement control to suit various hydraulic requirements.
Durable Design:
Built with robust materials and precision engineering, these pumps are suitable for harsh environments and extended operating periods.
Ease of Integration:
Compact construction with multiple mounting and porting options facilitates easy installation in diverse system layouts.
Broad Application Range:
Ideal for closed-circuit operations in applications like industrial machinery, mobile equipment, and marine systems.
The Rexroth A4V and A4VD pumps stand out for their performance, adaptability, and durability, making them a preferred choice for high-demand hydraulic systems
Type: A4V40, A4V56, A4V71, A4V90, A4V125, A4V250, A4VD250
Rexroth A4V A4VO A4VD Hydraulic Pump Parts LIST:
| Size | 40 | 56 | 71 | 90 | 125 | 250 | |||||
| Displacement | Variable displacement pump | Vg max | cm3 | 40 | 56 | 71 | 90 | 125 | 250 | ||
| Boost pump | Vg H | cm3 | 8,4 | 11,4 | 19,0 | 19,0 | 26,4 | 52,5 | |||
| Speed | maximum* | nmax | rpm | 3700 | 3400 | 3200 | 2900 | 2600 | 2000 | ||
| minimum | nmin | rpm | 500 | 500 | 500 | 500 | 500 | 500 | |||
| Flow | at nmax | Variable displacemrit pump | Qmax | l/min | 148 | 190 | 227 | 261 | 325 | 500 | |
| Boost pump | QH max | l/min | 31 | 38 | 61 | 55 | 68 | 105 | |||
| at nE= 1450 min-1 | Variable displacement pump | Q | l/min | 58 | 81 | 103 | 130 | 181 | 362 | ||
| Boost pump | QH | l/min | 12 | 16 | 27 | 27 | 38 | 76 | |||
| Power | at nmax | Var.displ.pump | △p = 400 bar | Pmax | kW | 99 | 127 | 151 | 174 | 217 | 333 |
| Boost pump | △p = 25 bar | PH max | kW | 1,3 | 1,6 | 2,5 | 2,3 | 2,8 | 4,3 | ||
| at nE= 1450min-1 | Var.displ.pump | △p = 400 bar | P | kW | 39 | 54 | 69 | 87 | 121 | 241 | |
| Boost pump | △p = 25 bar | PH | kW | 0,5 | 0,7 | 1,1 | 1,1 | 1, | 3,1 | ||
| Torque | at Vg max | Var.displ.pump | △p = 400 bar | Mmax | Nm | 254 | 356 | 451 | 572 | 795 | 1590 |
| (without boost pump) | △p = 100 bar | M | Nm | 63,6 | 89 | 113 | 143 | 199 | 397 | ||
| Moment of inertia (around drive axis) | J | kgm2 | 0,0049 | 0,0085 | 0,0121 | 0,0175 | 0,03 | 0,0959 | |||
| Swivel time** | Min. swivel time with built-in throttles (at X1,X2),Standard model | 0 – Vg max | s | 1,0 | 1,0 | 2,0 | 1,2 | 1,2 | 2,5 | ||
| Vg max– 0 | s | 1,0 | 1,0 | 1,2 | 1,2 | 1,2 | 1,8 | ||||
| Throttle-∅ | mm | 0,8 | 0,8 | 1,0 | 1,0 | 1,0 | 2,2 | ||||
| Min. swivel time without throttles | 0 – Vg max | s | 0,5 | 0,5 | 1,2 | 0,5 | 0,5 | 1,5 | |||
| Vg max– 0 | s | 0,4 | 0,4 | 0,7 | 0,5 | 0,5 | 1,0 | ||||
| Weight | (standard model,without through shaft) | m | kg (ca.) | 30 | 37 | 54 | 54 | 75 | 160 | ||
| * Higher speeds may be permissible if full operating details are known – please consult us. ** The swivel time can be influenced by means of additional meter-in and meter-out throttles in the pilot lines. | |||||||||||
