Oilgear PVG Series Piston Pump | PVG-130 PVG-150 | PVG130C2UVRGFKP-1NN

The PVG Series high-pressure axial piston pumps from Chengyuan Hydraulic are high-performance power units fully compatible with Oilgear industry standards. Designed specifically for open-loop circuits, the PVG series is renowned for its rapid compensator response times and exceptional shock resistance. For core models like PVG-130-F1UV and PVG-150-A1UV, we utilize reinforced ductile iron housings and precision-ground valve plate sets. Every pump undergoes 100% simulated heavy-duty load testing to ensure its volumetric efficiency at 350 bar matches OEM performance, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Series Model: PVG Series (Axial Piston Pump)

• Nominal Sizes: 130 (130 cm³/rev) / 150 (150 cm³/rev)

• Rated Operating Pressure: 350 bar (35 MPa)

• Peak Operating Pressure: 400 bar (40 MPa)

• Control Options: LS (Load Sensing) / P (Pressure Compensator) / UV (Unloading/Vent)

• Sealing: V (Viton/FKM), compatible with fire-resistant fluids or high-temperature oils

• Speed Range: Up to 2400 rpm (depending on inlet pressure)

• Mounting Standard: SAE Standard Flange and Splined Shaft

• Housing: High-strength fatigue-resistant ductile iron

Key Technical Advantages:

• Transient Response Logic: Equipped with high-sensitivity compensators (e.g., LGFY/LSFY), the PVG series adjusts swashplate angles in milliseconds when system demands fluctuate. This rapid response prevents pressure overshoots, protecting hydraulic lines and actuators from destructive shocks.

• Hydrostatic Balance Support: The piston slippers and swashplate interface feature a precisely calculated hydrostatic balance. This ensures a stable lubricating oil film even under 350 bar continuous load, minimizing metal-to-metal friction and significantly extending high-pressure service life.

• Low Noise & Contamination Tolerance: By optimizing the V-groove design on the valve plate, pressure pulsations are dampened, leading to noise levels significantly lower than competitors. The reinforced bearing system also provides superior tolerance to fine particles in the fluid.

• Through-Drive Capability: Supports 1NNNN specifications, allowing for a tandem pump configuration. Users can mount a second piston or gear pump to the rear of the PVG pump, providing a compact, integrated solution for multi-actuator systems.

Application Areas:

• Metal Processing: Heavy-duty forging presses, extrusion presses, and scrap metal balers.

• Plastics Industry: Hydraulic power for large injection molding and blow molding machines.

• Marine & Offshore: Marine cranes, winches, and steering gear control systems.

Expert Maintenance Tips:

• Case Pressure Management: PVG pumps are sensitive to case drain pressure. Ensure the drain line is plumbed directly to the tank with backpressure not exceeding 1.5 bar to prevent shaft seal failure or sluggish swashplate action.

• Pre-Start Priming: The swashplate bearings rely on static oil within the housing. Before the first “jog-start,” the pump must be filled with clean hydraulic oil through the highest drain port.

• LS Control Calibration: For models with Load Sensing (LS), it is recommended to re-verify the differential pressure settings after installation to match the specific dynamic characteristics of your system’s load.