PRAISE Fixed Vane Pump | VPNE-70 VPNC-4 VPSB-F13 | High Efficiency

LIC Hydraulic offers the PRAISE Fixed Volume Vane Pump Series, engineered for industrial applications where quiet operation and high efficiency are non-negotiable. These pumps, including the VPNE, VPNC, and VPSB series, utilize a balanced vane design that eliminates radial loads on the rotor, significantly extending mechanical life. Models like VPNE-70-2-21 and VPNC/E-4/45-2-21-009 are trusted worldwide for providing ripple-free flow at pressures up to 175 bar, making them the premier choice for machine tool and plastic machinery hydraulic circuits.

Technical Specifications (Quick Reference)

• Series: VPNE (High Pressure), VPNC (Standard), VPSB (Low Noise).

• Mounting: Standard flange and keyed shaft options available.

• Max Pressure: Up to $175\text{ bar}$ depending on series.

• Rotation: Right-hand (CW) or Left-hand (CCW) options specified by model code (e.g., “-2-“).

Key Technical Advantages

• Whisper-Quiet Performance: Advanced fluid passage design reduces cavitation noise and pressure ripple, ideal for noise-sensitive indoor factory environments.

• Hydraulically Balanced: The double-vane configuration ensures the rotor is perfectly balanced, reducing friction and minimizing heat generation.

• High Volumetric Efficiency: Precision-engineered side plates maintain optimal clearances, ensuring consistent flow performance even under heavy loads.

• Robust Construction: Hardened steel vanes and heavy-duty castings ensure durability against thermal shock and pressure spikes.

Application Areas

• Machine Tools: Smooth power for precision grinding, honing, and boring machines.

• Plastics Industry: Reliable performance for injection molding and blow molding equipment.

• Industrial Automation: Powering hydraulic presses, benders, and conveyor drives.

• Test Rigs: Providing steady, low-pulse flow for component testing.

Expert Maintenance Tips

• Monitor Oil Viscosity: For optimal vane extension and lubrication, maintain oil viscosity within the recommended range. Too thin oil can lead to internal leakage; too thick can cause sluggish vane response.

• Seal Integrity: Regularly check the shaft seal and O-rings. Vane pumps are vacuum-sensitive on the suction side; any air leak will cause noisy operation and rapid internal wear.

• System Flushing: When replacing a failed pump, always flush the hydraulic reservoir and lines. Metal debris from a previous failure can destroy a new vane pump within minutes of startup.