描述

Key Technical Data at a Glance

• Displacement: 71 cm³/rev (≈4.33 in³/rev).

• Pressure Rating: Max 350 bar (≈5,075 psi) depending on configuration, standard continuous at 280 bar.

• Speed Range: Up to 2400 rpm or more, subject to control type and porting.

• Defining Feature: Broad integrated control options, converting the pump into an intelligent, system-optimized component. The A10VO series includes models from A10VO28 and A10VO45through A10V071 and A10VO140, with the A10VO71 and A10VO71Dflr representing the most widely specified configurations in the Rexroth hydraulic piston pump lineup.

Control Variants: The Intelligence Behind the Power

Choosing the right control variant is the most critical application decision for the A10VO71. It governs pump behavior and overall system efficiency. The same control principles apply across the entire A10VO series, from the compact A10VO28 to the high-capacity A10VO140, ensuring consistent performance regardless of displacement.

Pressure Control (LR, LU, LRC)

• Function: Self-regulating pressure source. Automatically reduces displacement (“de-strokes”) to maintain preset pressure, delivering minimal flow to compensate for leakage.

• Expert Application: In plastic injection molding, an LRC-controlled A10VO71 provides holding pressure during curing without engaging a relief valve, cutting energy and heat versus fixed-displacement pumps. This control is also available on other series models, including the A10VO63and A10V071.

Pressure/Flow Compensator (LRDS, LRDF)

• Function: Delivers constant preset flow regardless of load fluctuations (within power limits), combining priority flow with pressure-limiting protection.

• Expert Application: In surface grinders, an LRDF-controlled A10VO71 maintains steady table feed speed for consistent finish quality, regardless of cutting resistance variations. The A10VO71Dflrvariant offers enhanced compensator performance for demanding industrial applications.

Load-Sensing Control (LRDS with LS port)

• Function: The pinnacle of multi-function hydraulic efficiency. Continuously senses the highest pressure demand via an LS line, delivering only required flow at a pressure marginally above (Δp) that demand.

• Expert Application: On mobile cranes performing simultaneous boom, telescope, and swing operations, load-sensing A10VO71 automatically provides precise pressure and flow as demanded, eliminating parasitic losses and reducing cooling requirements. The same LS technology is used across the A10VO range, from A10VO45 to A10VO140.

Performance Characteristics & Design Advantages

The A10VO71 is trusted by OEMs and rebuilders for proven performance—a reputation shared by the entire A10VO oil pump family, including the widely specified A10VO28, A10VO45, A10VO63, A10V71, A10V071, and A10VO140:

• High Power Density: Compact, rugged design delivers exceptional output relative to size and weight—critical for space-limited mobile equipment.

• Superior Efficiency: Precision manufacturing minimizes internal leakage (high volumetric efficiency) and reduces friction (high hydromechanical efficiency), lowering operating costs and waste heat.

• Responsive Control: Integrated controls provide precise, stable, and fast response for smooth, safe machine operation.

• Serviceability: Major sub-assemblies are separable for easy inspection, seal replacement, or overhaul with proper tooling. The A10VO71Dflr and other series models share this service-friendly design.

Common Industrial & Mobile Applications

The A10VO71 offers versatile solutions across sectors, as do the broader Rexroth hydraulic piston pump series—including A10VO28, A10VO45, A10VO63, A10V71, A10V071, and A10VO140:

• Mobile Machinery: Excavators, wheel loaders, telehandlers, and cranes—powering implements, travel drives, and steering.

• Industrial Production: Injection molding, hydraulic presses, and machine tool auxiliaries (clamping, tool changers) requiring precise, repeatable force.

• Material Processing: Wood chippers, compactors, and balers operating under pulsating loads and demanding duty cycles.

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FAQ

Q1: What can you purchase from us?

A: We are a professional distributor of hydraulic equipment parts, including servo valves, proportional valves, piston pumps, vane pumps, gear pumps, motors, and more.

Q2: How long is the warranty period?

A: For natural damages, the warranty period is 3 to 12 months, and any quality issues can be supported free of charge.

Q3: What mode of transportation can you provide?

A: (1) Large orders: shipped by sea or air. (May reduce costs)
(2) Small orders: shipped via DHL, TNT, UPS, FEDEX, EMS, ARAMEX.

Q4: What are the terms of the transaction?

A: EXW, FCA, FAS, FOB, C&F, CIF, CPT, CIP, DAF, DES, DDP.

Q5: What is the delivery lead time?

A: (1) In stock: 1-3 days. Always within 24 hours.
(2) Out of stock: Based on your quantity, we have collaborated with the factory and will inform you of the quotation.

Q6: Why choose Shirong?

A: (1) We are a professional distributor of hydraulic components, offering a wide range of models from various brands.
(2) 100% quality assurance; small batches and sample orders are acceptable, and prices for large quantities are negotiable.
(3) Our products are sold across China, Southeast Asia, Middle Eastern countries, Europe, and the Americas, and we provide professional information and services.