Vickers VMQ Series Vane Pump | VMQ125 VMQ135 VMQ145 | VMQ135S140

LIC Hydraulic’s Vickers VMQ Series represents the high-performance evolution of vane pump technology. Featuring the flagship VMQ135S140B00100BBBANR00A032 configuration, this series is engineered to bridge the gap between vane pump quietness and piston pump pressure capability. With a world-class continuous pressure rating of up to $293\text{ bar}$ ($4250\text{ PSI}$), the VMQ line (including double pumps like VMQ23525 and VMQ24535) is the preferred choice for heavy-duty industrial systems where noise reduction is as critical as power density.

Technical Specifications (Quick Reference)

• Frame Sizes: VMQ125, VMQ135, VMQ145 (Single); 22525, 23525, 24525, 24535 (Double).

• Max Pressure: Up to $293\text{ bar}$ ($4250\text{ PSI}$).

• Displacement Range: $10\text{ cm}^3\text{/r}$ to $158\text{ cm}^3\text{/r}$ (per section).

• Efficiency: Over $94\%$ volumetric efficiency at full load.

• Interchangeability: 100% Drop-in replacement for Eaton Vickers VMQ part numbers.

Key Technical Advantages

• Tri-Metal Wafer Cartridge: The unique cartridge design utilizes hardened surfaces and precision timing to handle extreme pressures without the rapid wear associated with standard vane pumps.

• Industry-Leading Low Noise: Engineered with advanced damping fluid paths, the VMQ operates at decibel levels significantly lower than piston pumps of equivalent horsepower.

• Hydraulically Balanced Design: Opposing pressure chambers eliminate radial loads on the shaft, drastically extending the B10 life of the internal bearings.

• Modular Versatility: The cartridge design allows for easy field repairs and displacement changes, reducing maintenance complexity and downtime.

Application Areas

• Injection Molding: High-pressure clamping and rapid injection cycles.

• Die Casting: Reliable power for intensive, high-speed industrial processes.

• Waste Management: Robust performance for high-pressure refuse compactors.

• Primary Metals: Quiet, high-flow oil supply for heavy presses and shears.

Expert Maintenance Tips

• Prime the Pump: Always prime the VMQ pump case and cartridge with clean oil before the first run. Dry starts at high speeds will lead to immediate galling of the cam ring.

• Case Drain Management: Ensure all connections are vacuum-tight. Air ingress into the suction line will cause cavitation, which is particularly destructive at the high operating pressures of the VMQ series.

• Oil Viscosity Control: Maintain an operating viscosity between $13\text{–}54\text{ cSt}$. Running the VMQ with excessively thin or contaminated oil will compromise the pressure-sealing wafer plates.