The Eaton Vickers PVH series hydraulic pumps are a versatile and high-performance family of variable displacement inline piston pumps, engineered to meet the stringent demands of both mobile and industrial applications. These pumps are designed to handle high flow and high-pressure requirements, making them an ideal choice for power-dense machinery in construction, earthmoving, machine tools, plastics, and more.
1)Exceptional Performance: The PVH pumps provide continuous operating pressure of up to 250 bar (3625 psi) and can handle intermittent pressures of 280 bar (4060 psi). This ensures reliable operation even in demanding conditions.
2)Compact and Lightweight Design: The pumps are designed to reduce overall system weight, allowing for easier installation and servicing while maintaining high power density.
3)Advanced Control Options: Equipped with multiple control features such as pressure compensation, load sensing, and torque limiting, the PVH series provides precise and energy-efficient hydraulic system management.
4)High Efficiency: With volumetric efficiencies exceeding 95%, these pumps ensure that maximum input energy is directed towards productive work, minimizing heat generation and energy loss.
5)Quiet Operation: Specially designed models are available to minimize noise levels, making them suitable for noise-sensitive environments in industrial settings.
The Eaton Vickers PVH series is trusted for its robust construction, long lifespan, and ability to perform under intense workloads, making it a preferred choice for industries that demand high reliability and productivity.
EATON HYDRAULIC PUMP PVH131/141:
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1. Product Overview
• Brand & Model: EATON PVH Series hydraulic pumps, including models PVH131 and PVH141.
• Type: Axial piston variable displacement pumps designed for open-loop systems.
• Applications:
• Construction machinery (e.g., excavators, cranes, road rollers).
• Industrial equipment (e.g., injection molding machines, die-casting machines, metallurgical equipment).
• Marine and offshore engineering.
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2. Technical Specifications & Features
• Displacement Range:
• PVH131: Nominal displacement of approximately 131 cc/rev (may vary slightly based on configuration).
• PVH141: Nominal displacement of approximately 141 cc/rev.
• Pressure Rating:
• Maximum operating pressure up to 350 bar (5075 psi), with some models supporting higher pressures.
• Control Methods:
• Pressure-Compensated Control: Automatically adjusts displacement to maintain constant system pressure.
• Load-Sensing Control: Dynamically regulates displacement based on load demand, improving energy efficiency.
• Remote Control: Adjusts displacement via external signals (e.g., electric or hydraulic).
• Speed Range:
• Typical operating speed: 600~2500 rpm (varies based on application and system requirements).
• Efficiency:
• High volumetric efficiency (>95%) and mechanical efficiency (>90%), reducing energy consumption and heat generation.
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3. Structure & Design
• Axial Piston Design:
• Adopts a swashplate-type axial piston structure with pistons arranged axially, adjusting displacement via swashplate angle changes.
• Modular Design:
• Optional control modules (e.g., pressure-compensated valves, load-sensing valves, electro-proportional control valves) for diverse needs.
• Sealing & Durability:
• High-performance seals and wear-resistant materials extend service life and reduce leakage.
• Cooling & Lubrication:
• Built-in lubrication circuit ensures adequate lubrication and cooling for critical components like pistons and swashplates.
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4. Performance Advantages
• High Energy Efficiency:
• Load-sensing control technology reduces overflow losses, lowering energy consumption.
• Fast Dynamic Response:
• Quickly adjusts displacement to adapt to load changes, improving system responsiveness.
• High Reliability:
• EATON brand quality assurance, suitable for heavy-duty and continuous operation.
• Easy Maintenance:
• Modular design facilitates repairs and component replacement, reducing downtime.
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5. Application Examples
• Case 1: Hydraulic System for Excavators
• Requirement: Excavators need high-power, high-efficiency hydraulic systems to support arm, bucket, and rotation movements.
• Solution: Adopt the PVH141 pump with load-sensing control for precise flow distribution, reducing energy consumption and improving operational efficiency.
• Case 2: Hydraulic System for Injection Molding Machines
• Requirement: Injection molding machines require fast response and stable pressure output to ensure molding quality.
• Solution: Use the PVH131 pump with pressure-compensated control to maintain constant system pressure, ensuring injection stability.
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6. Selection & Configuration Recommendations
• Displacement Selection:
• Choose PVH131 or PVH141 based on system flow requirements.
• Control Method:
• Opt for electro-proportional control or load-sensing control modules if automated control is needed.
• Accessory Configuration:
• Optional pressure sensors, flow sensors, and other accessories for precise system monitoring.
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7. Maintenance & Care
• Regular Inspection:
• Check hydraulic fluid cleanliness and regularly replace hydraulic oil and filters.
• Inspect pump connections for looseness or leakage.
• Troubleshooting:
• If the pump is excessively noisy, check pistons and swashplates for wear.
• If output flow is insufficient, check for blockages inside the pump or damaged seals.
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8. Summary
The EATON PVH131/141 hydraulic pump is a high-performance, high-reliability axial piston variable displacement pump suitable for hydraulic systems requiring high power and efficiency. Its modular design and diverse control methods allow flexible adaptation to various application scenarios. With proper selection and maintenance, the PVH series pumps can operate reliably for extended periods, providing users with reliable hydraulic power support.
