A10VSO series Rexroth Piston Pump
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Rexroth A10VSO Series Axial Piston Variable Pump: Specifications and Applications
1. Product Overview
2. Core Specifications
2.1 Series Classification & Displacement Range
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Series 31: All-purpose medium-pressure pumps with displacement sizes from 18 cm³ to 140 cm³ (e.g., A10VSO 18, 45, 71, 100, 140). Typical models include A10VSO 71 DG/31R, A10VSO 140 DFLR/31R.
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Series 32: Industrial-grade pumps optimized for heavy-duty applications, with displacement sizes ranging from 45 cm³ to 180 cm³ (e.g., A10VSO 71 DR/32R, A10VSO 180 DRF/32R).
2.2 Key Performance Parameters
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Parameter
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Value Range
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Notes
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Nominal Working Pressure
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280 bar (4000 psi)
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Standard for all sub-series
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Maximum Peak Pressure
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350 bar (5100 psi)
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For short-term overload conditions
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Drive Speed
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Up to 1500 rpm (typical)
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Varies by size; high-speed versions (140/180 cm³) feature double retainer mechanisms
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Maximum Flow Rate
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Up to 270 l/min
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Calculated at maximum displacement and rated speed (A10VSO 180 model)
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Operating Temperature
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-20°C to 90°C
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Leakage oil temperature must not exceed 90°C
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Weight
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37 kg to 85 kg
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Depends on displacement size and control configuration
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2.3 Structural & Installation Specifications
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Sealing Material: FKM (Viton) as standard, ensuring compatibility with most hydraulic fluids.
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Mounting Configuration: ISO 3019-2 (metric) mounting flange with 2-hole design; supports below-reservoir, inside-reservoir, and above-reservoir installation.
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Shaft End: ISO standard shaft key for reliable power transmission; optional through-drive for combination pump setups (A10VSO + A10VSO).
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Port Design: Two drain ports; pump outlet equipped with a port for pressure transducers; B/S flanged metric working ports.
2.4 Control Methods
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Pressure Control (DR): Direct pressure regulation with adjustable setpoints (20-250 bar via setting screw).
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Pressure-Flow Control (DRF/DRS): DRF for open-loop X-T control, DRS for closed-loop X-T control, integrating both pressure and flow regulation.
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Remote Pressure Control (DRG): Hydraulically controlled remote pressure adjustment for flexible system integration.
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Electronic Displacement Control (DFE): Electrically proportional displacement control with pressure feedback, enabling automated system adjustment.
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Power Control (LA5D/LA6D/LA7D): Combines pressure control with power limiting, with adjustable control start points (50-160 bar).
3. Applications
3.1 Industrial Machinery
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Machine Tools: Used in CNC machining centers, lathes, and milling machines for precise feed drive and spindle control, benefiting from low noise and stable flow output.
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Plastic Processing: Applied in injection molding machines and extruders to drive clamping units and screw mechanisms, with pressure-flow control ensuring consistent molding quality.
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Metallurgy & Forging: Suitable for hydraulic presses, rolling mills, and smelting equipment, enduring high-pressure and heavy-load conditions with long service life.
3.2 Construction & Mining Machinery
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Mining Equipment: Integrated into excavators, loaders, and drill rigs, providing powerful hydraulic drive for digging, lifting, and drilling operations.
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Crane Systems: Used in mobile and stationary cranes to control hoisting, luffing, and slewing mechanisms, with precise pressure control ensuring operational safety.
3.3 Other Fields
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Agricultural Machinery: Adapted for large-scale farm equipment such as combine harvesters and tractors, handling variable loads and harsh outdoor environments.
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Marine & Offshore: Applied in ship deck machinery (winches, cranes) and offshore drilling platforms, with corrosion-resistant options available for marine conditions.
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Energy & Utilities: Used in hydroelectric power plants and wind turbine pitch control systems, delivering reliable performance in continuous operation scenarios.
4. Key Advantages
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Optimized housing and port plate structure minimize noise radiation, meeting industrial noise standards.
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Hydrostatic unloading of cradle bearings reduces wear and extends service life.
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Built-in pressure cut-off valve and dual relief valves on the high-pressure side provide overload protection.
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Excellent power-to-weight ratio and compact design enable easy integration into limited installation spaces.
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Compatible with hydraulic fluids meeting NAS 1638 Class 9 cleanliness requirements, ensuring system reliability.
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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.
