A4VSO series Rexroth Piston Pump
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Rexroth A4VSO Series Variable Displacement Piston Pumps
1. Product Overview
2. Technical Specifications
2.1 Core Parameters
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Specification Item
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Details
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Nominal Pressure
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350 bar
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Maximum Pressure
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400 bar (absolute)
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Displacement Range
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40 – 1000 cm³/rev (models include A4VSO40, A4VSO71, A4VSO125, A4VSO180, A4VSO250, A4VSO355, A4VSO500, A4VSO750, A4VSO1000)
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Maximum Speed
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Varies by model: 2200 rpm (A4VSO40) to 1000 rpm (A4VSO750/1000)
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Flow Rate
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Proportional to drive speed and displacement; up to 1000 L/min (at maximum speed for large models)
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Case Pressure (Maximum Leakage Pressure)
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4 bar (absolute)
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Hydraulic Fluid
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HLP mineral oil conforming to DIN 51524, with specific viscosity ranges for cold start, warm-up, continuous, and short-term operation
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Weight
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39 kg (A4VSO40) to 605 kg (A4VSO1000), depending on model
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2.2 Key Design Features
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Axial piston swashplate design for open-circuit operation
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Through-drive capability for mounting additional pumps of the same nominal size
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Modular design for easy integration and maintenance
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Visual swivel angle indicator for convenient monitoring
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Optional mounting positions to adapt to different system layouts
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High-precision aviation-grade full roller bearings for extended service life
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Suitable for operation with HF fluids under reduced operational data
3. Applications
3.1 Construction Machinery
3.2 Metallurgy and Steel Industry
3.3 Mining Machinery
3.4 Marine Engineering
3.5 Industrial Automation and Machinery
3.6 Oil and Energy Industry
4. Supplementary Notes
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Process steps：
Customer inquiry: Customers will make inquiries before placing an order to understand product details and communication needs.
Quotation: According to customer needs, provide a formal quotation, including the name, model, quantity, delivery time, payment method, etc. of the goods.
Order confirmation: After the customer confirms the quotation, a formal purchase order will be placed.
Confirm the delivery time: communicate the delivery time with the production department, inform the factory of the order details, and arrange the production plan.
Sign an export contract: After the two parties confirm that it is correct, sign an export contract to establish a trade relationship.
Implement the letter of credit (if applicable): If the payment method of the letter of credit is used, the customer needs to be urged to issue the certificate and review the contents of the letter of credit.
Export stocking: According to the requirements of the contract and the letter of credit, arrange production, purchase raw materials and packaging, and prepare the goods.
Chartering and booking: Contact the freight forwarder to make a booking and arrange the transportation of goods.
Export inspection: Apply to the quality inspection department for export commodity inspection and provide relevant documents.
Apply for a write-off slip: apply for a write-off slip from the foreign exchange management department for subsequent foreign exchange write-off.
Export declaration: Declare exports to the customs and provide documents such as power of attorney for customs declaration, customs declaration form for export goods, commercial invoice, packing list, etc.
