Rexroth 31 series A10VSO100 axial piston hydraulic pump

In the world of industrial hydraulics, where reliability and efficiency are non-negotiable, the Rexroth 31 Series A10VSO100 axial piston pump stands as a benchmark of engineering excellence. Manufactured by Bosch Rexroth, a global leader in drive and control technologies, this pump is more than just a component; it is the heart of countless high-performance hydraulic systems. Designed for open circuit applications, the A10VSO100 delivers variable displacement with exceptional control, making it the go-to solution for mobile and industrial machinery demanding robust power, precise operation, and outstanding energy efficiency. This article delves into the technical sophistication, key features, and application-centric design that have cemented its reputation across industries.

Core Design & Operating Principle

At its heart, the A10VSO100 is a swashplate design axial piston pump. This proven design principle is key to its performance and durability.

The Swashplate Mechanism

The pump's operation revolves around a rotating cylinder block with several pistons arranged axially. These pistons bear against a tilted plate—the swashplate. As the cylinder block rotates, the angle of the swashplate causes the pistons to reciprocate within their bores, drawing in fluid during the suction stroke and pressurizing it during the discharge stroke. The A10VSO100’s specific design minimizes friction and wear at this critical interface.

Variable Displacement via Swashplate Angle

The defining feature of the "SO" (Pressure Control) series is its ability to vary output flow. This is achieved by physically changing the angle of the swashplate. A control piston, responding to system pressure or an external signal, adjusts this angle. A zero swashplate angle results in zero flow, while the maximum angle provides 100% of the pump’s rated displacement (100 cc/rev in this model). This provides seamless, on-demand power without the energy waste of constant flow systems.

High Power Density and Pressure Capability

Engineered for demanding duty cycles, this pump typically operates at continuous pressures up to 280 bar (4065 psi), with peak capabilities even higher. Its compact 31 series footprint delivers this high power density, allowing machine designers to save space and weight without compromising on hydraulic power.

Advanced Control Options

While the standard model features a pressure compensator (LR), the A10VSO100 platform is renowned for its wide array of interchangeable control options. These include:
• LR Pressure Control: Maintains a set system pressure by reducing flow as demand drops.

• LRG with Load-Sensing (LS): Adjusts flow and pressure precisely to the load requirement, maximizing efficiency.

• LRH with Horsepower Control (LRC): Prevents engine stall by limiting pump power draw, crucial for mobile equipment with finite prime mover power.

• Electro-Proportional Controls (e.g., ED): Enable seamless integration into automated, sensor-driven systems for Industry 4.0 applications.

Robust Construction and Efficiency

Manufactured to exacting tolerances, the pump features a hardened steel swashplate and piston slippers, precision-machined cylinder blocks, and high-quality bearings. This construction minimizes internal leakage (volumetric loss) and mechanical friction, resulting in high overall efficiency across a wide operating range, which directly translates to lower operating costs and reduced heat generation.

Primary Industrial Applications

The versatility and robustness of the Rexroth A10VSO100 make it suitable for a vast array of applications.

Mobile Machinery

This is its primary domain. The pump is commonly found in:
• Excavators and Loaders: Providing the precise, powerful control needed for digging, lifting, and swinging.

• Cranes and Aerial Work Platforms: Ensuring smooth, controlled movement for load handling and positioning.

• Truck-Mounted Systems: Powering concrete mixer drums, refuse truck compactors, and snowplows.

Industrial Systems

In fixed installations, its reliability shines in:
• Presses and Injection Molding Machines: Delivering the consistent, high-pressure flow required for manufacturing processes.

• Test Rigs and Simulators: Where accurate and responsive hydraulic power is critical for validation and training.

• Material Handling: Powering conveyors, rollers, and other automated factory equipment.

Selection, Maintenance & Optimization

Proper specification and care are critical to achieving the pump's full service life, which can extend to tens of thousands of hours.

Key Selection Criteria

• Required Flow and Pressure: Match the 100 cc/rev displacement and pressure ratings to your system's demands.

• Control Type: Choose the control option (LR, LRG, ED, etc.) that aligns with your system's efficiency and functional goals.

• Drive Speed and Fluid Compatibility: Ensure the prime mover speed and the hydraulic fluid (typically mineral oil with specific cleanliness and viscosity targets) are within Rexroth's specified limits.

Critical Maintenance Practices

• Fluid Cleanliness: This is the single most important factor. Maintaining fluid at ISO 18/16/13 or cleaner per Rexroth specification is non-negotiable. Contamination is the leading cause of pump failure.

• Proper Commissioning: Ensure the housing is filled with fluid before start-up to prevent dry running. Follow the manufacturer's recommended bleeding procedures.

• Regular Condition Monitoring: Track system pressure, noise levels, temperature, and flow. Changes in these parameters are early indicators of wear or cavitation.

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Specifications

Selection Table

Q1: What does "A10VSO100" stand for?

A1: It's the Bosch Rexroth product designation. "A10" denotes the axial piston pump series, "V" indicates variable displacement, "SO" specifies the swashplate design with pressure control, and "100" is the nominal displacement in cubic centimeters per revolution (cc/rev).

Q2:My A10VSO100 is noisy. What are the likely causes?

A2:Excessive noise often indicates cavitation (check inlet conditions, suction line, and fluid viscosity), aeration (check for air leaks on the suction side), or excessive wear in the rotating group due to contamination. Always check fluid level, cleanliness, and inlet strainer first.

Q3:How to purchase an A10VSO100 hydraulic pump?

A3:You can click on the right sidebar or the contact information in the top bar to contact us to purchase. You can do so via email, form, WeChat, WhatsApp, or other methods.

Q4:What is the price and delivery time of the A10VSO100 hydraulic pump?

A4:The specific price and delivery time will be provided based on the specific model you provide.