PVM098 is also an open-circuit variable displacement axial piston pump originally manufactured by VICKERS and now owned by Danfoss. It features a displacement of 98.3 ml/r, a continuous operating pressure of 315 bar and a peak pressure of 350 bar. Characterized by heavy-load capacity, high wear resistance and low noise operation, it is widely applied in heavy-duty equipment such as mining, metallurgical and marine machinery.
The PVM series piston pumps adopt an axial piston design for open-circuit systems. A wide range of controllers are available to tailor pump performance to diverse application requirements. Its thoroughly proven rotating assembly enables a continuous operating pressure of 280 bar (4000 psi) and an intermittent pressure of 320 bar (4600 psi), alongside low maintenance costs. Each frame size also offers variants rated for higher flow at 230 bar (3300 psi), delivering enhanced application flexibility. Heavy-duty bearings and a robust drive shaft yield a service life of 30,000 hours at 65% of rated pressure, cutting operational expenses and extending service life.
PVM098 Series Variable Displacement Axial Piston Pump: The High-Efficiency Hydraulic Power Core
1. Product Positioning and Core Functions
The PVM098 series is avariable displacement axial piston hydraulic piston pumplaunched by Eaton Vickers, designed specifically for open-circuithydraulic systems. Its core function is to dynamically match flow and pressure by adjusting displacement, meeting the demands of industrial equipment for efficient, energy-saving, and low-noise hydraulic power.
2. Technical Specifications and Performance Advantages
• Displacement and Pressure:
• Nominal displacement: 98.3 cm³/rev; rated continuous operating pressure: 280 bar (4,000 psi); peak pressure: 320 bar (4,600 psi), ensuring stable support for high-load applications.
• Variable control technology enables the pump to automatically deliver high flow at low pressure and maintain minimum displacement for pressure retention at high pressure, reducing energy waste.
• Efficiency and Durability:
• Volumetric efficiency up to 94%–96%, significantly minimizing system heat generation and energy consumption.
• Rigid drive shaft and heavy-duty bearing design provide a service life of up to 30,000 hours (under 60% rated pressure conditions), lowering maintenance costs.
• Noise Reduction:
• Optimized rotating components and bimetallic port plates reduce operating noise below industrial standards, making it suitable for noise-sensitive applications (e.g., entertainment equipment, precision manufacturing).
3. Structural Innovations and Reliability Design
• Steel-Backed Polymer Bearing Saddle Yoke:The rigid yoke minimizes deflection, ensuring uniform load distribution across bearings and extending service life while reducing failure rates.
• Adjustable Displacement Stop and Pressure Gauge Port:Standard-equipped adjustable maximum displacement stops and real-time inlet/outlet pressure monitoring simplify system commissioning and maintenance.
• Flexible Installation Options:Supports SAE/ISO flanges, BSPP pipe threads, and other mounting interfaces to accommodate diverse equipment space requirements.
4. Typical Application Scenarios
The PVM098 series is widely used in high-load, high-precisionhydraulic systems, including:
• Metallurgical Industry: Hydraulic stations for steel rolling lines and forging equipment, providing stable high-pressure power.
• Energy Sector: DEH/EH hydraulic governing systems for power plant turbines, ensuring reliable operation of fire-resistant fluid systems.
• Construction Machinery: Heavy-duty non-standard hydraulic equipment and die-casting machine main pumps, supporting 24/7 continuous operation.
• Entertainment and Manufacturing: Flight simulators and automated conveyor lines, balancing power and quiet operation.
5. Comparative Advantages and Industry Value
• Energy Efficiency:Load-sensing + constant-pressure dual compensation control (e.g., AJ control mode in PVH098 models) reduces displacement automatically during idle operation, saving over 20% energy compared to traditional pumps.
• System Integration:Built-in remote pressure regulation ports and pressure damping structures reduce the need for external valves, loweringhydraulic systemcomplexity and costs.
• Environmental Adaptability:Operates in oil temperature ranges from -20°C to +80°C and is compatible with 46#/68# anti-wear hydraulic oils, suitable for harsh conditions.
6. User Feedback and Market Reception
Users widely praise the PVM098 series for itshigh-pressure stability, low failure rates, and long service life. For example, a steel plant’s rolling line hydraulic station reduced downtime by 40% and saved over RMB 1 million annually in energy costs after adopting this pump. Its modular design also appeals to equipment manufacturers, enabling rapid adaptation to varioushydraulic systemmodels.
