3321/3331 (Eaton 006); Eaton 3322 (EATON3322); 4621/4621-007; 5421/5431 (Eaton 23); Case 1460 (CASE1460); Case CS05A; Eaton 3932-243; Eaton 6423; 7621 (Eaton 24-7620); Road roller (Eaton 78462). Vickers series: PVE19;TA19;PVE21;PVH45;PVH57;PVH74;PVH81;PVH98;PVH106(HPN-1398);PVH131;PVH141;PVB5;PVB6;PVB10;PVB15(PVQ32 some common);PVB20;PVB29;PVBQA29-SR;PVQ40 /50; PVB110; TB35; B45
PVP Series Hydraulic Piston Pump: Detailed Overview
1. Product Overview
• Brand & Model: The PVP Series hydraulic piston pumps are designed and manufactured byEaton(formerly Vickers, now part of Eaton's Hydraulics Group). These are high-performance, reliable axial piston variable displacement pumps used in industrial and mobile hydraulic systems.
• Type: Swashplate-type axial piston variable displacement pumps, available in open-loop or closed-loop configurations.
• Applications:
• Industrial Equipment: Injection molding machines, die-casting machines, presses, metal forming equipment, etc.
• Mobile Machinery: Cranes, concrete pump trucks, aerial work platforms, port machinery, etc.
• Specialized Applications: Wind turbine hydraulic systems, ship deck machinery, etc.
2. Technical Specifications & Features
• Displacement Range:
• The PVP Series offers various displacement options (e.g., 16 cc/rev to 237 cc/rev), allowing flexible selection based on system flow requirements.
• Pressure Rating:
• Maximum operating pressure up to350 bar (5075 psi), with some models supporting420 bar (6090 psi)for high-pressure applications.
• Control Methods:
• Pressure-Compensated Control: Automatically adjusts displacement to maintain constant system pressure, improving efficiency.
• Load-Sensing Control: Dynamically adjusts flow based on load demand, reducing energy consumption.
• Remote Displacement Control (RDC): Adjusts pump displacement remotely via external mechanical or hydraulic signals.
• Constant Power Control: Optimizes displacement and pressure under power limits, ensuring system safety.
• Speed Range:
• Typical operating speed:600~3000 rpm(varies by model and application).
• Efficiency:
• Volumetric efficiency >95%, mechanical efficiency >90%, minimizing energy loss and heat generation.
3. Structure & Design
• Swashplate Axial Piston Construction:
• Pistons are arranged axially, with displacement adjusted via swashplate angle changes, ensuring a compact design and rapid response.
• Modular Design:
• Supports optional modules such as pressure-compensated valves, load-sensing valves, and electro-hydraulic control valves for easy system integration.
• Sealing & Durability:
• Advanced sealing technology and wear-resistant materials extend service life and reduce leakage.
• Lubrication & Cooling:
• Built-in lubrication circuits ensure adequate lubrication and cooling for critical components like pistons and swashplates.
4. Performance Advantages
• High Energy Efficiency:
• Load-sensing and electro-hydraulic control technologies reduce overflow losses, lowering energy consumption and operating costs.
• Fast Dynamic Response:
• Rapid displacement adjustment adapts to load changes, improving system responsiveness and production efficiency.
• High Reliability:
• Eaton quality assurance ensures suitability for harsh operating conditions, reducing downtime and maintenance costs.
• Ease of Maintenance:
• Modular design facilitates repairs and component replacement, shortening maintenance cycles.
5. Application Examples
• Case 1: Injection Molding Machine Hydraulic System
• Requirement: Rapid response and stable pressure output are needed to ensure molding quality.
• Solution: The PVP Series pump, paired with pressure-compensated control, maintains constant system pressure, improving molding stability.
• Case 2: Aerial Work Platform
• Requirement: Precise control of lifting speed and stability is essential for operational safety.
• Solution: The PVP Series pump, combined with load-sensing control, enables flow-on-demand distribution, reducing energy consumption and enhancing safety.
6. Selection & Configuration Recommendations
• Displacement Selection:
• Choose an appropriate displacement model (e.g., PVP16, PVP25) based on system flow requirements.
• Control Method:
• For automated systems, opt for electro-hydraulic control or load-sensing control modules.
• Accessory Configuration:
• Optional pressure sensors, flow sensors, etc., can be added for more precise system monitoring.
7. Maintenance & Care
• Regular Inspections:
• Check oil cleanliness and regularly replace hydraulic oil and filters.
• Inspect pump connections for looseness or leaks.
• Troubleshooting:
• Excessive pump noise may indicate piston or swashplate wear.
• Insufficient output flow may result from blockages or seal damage inside the pump.
8. Conclusion
The PVP Series hydraulic piston pump is a high-performance, reliable axial piston variable displacement pump suitable for hydraulic systems demanding power and efficiency. Its modular design and multiple control methods offer flexibility for various applications. Through proper selection and maintenance, the PVP Series pump ensures long-term stable operation, providing users with reliable hydraulic power support.