KYB PSVL Series Excavator Main Pump | PSVL-42CG PSVL2-36CG | B0610-36002

LIC Hydraulic specializes in the KYB PSVL Series, the benchmark for variable displacement axial piston pumps in the Mini and Midi Excavator market. These pumps, including the PSVL-42, PSVL-54, and the latest PSVL2-36CG models, are precision-engineered to provide the high-pressure flow required for complex machine movements. The B0610-36002 and related models feature a unique triple-pump integration (two variable piston pumps + one gear pump), ensuring that the excavator’s boom, arm, and bucket receive synchronized power. Known for their high power-to-weight ratio and exceptional reliability, the PSVL series is the original choice for top-tier global excavator manufacturers.

Technical Specifications (Bulleted List)

• Series: KYB PSVL / PSVL2 (Load Sensing Variable Piston Pump).

• Displacements: 36cc, 42cc, 54cc, and 84cc per revolution.

• Rated Pressure: $250\text{–}300\text{ bar}$ ($3625\text{–}4350\text{ PSI}$).

• Control Type: Constant horsepower control with load sensing.

• Integration: Built-in pilot gear pump and relief valve options.

• Application Range: $3.5\text{–}10$ Ton crawler and wheeled excavators.

Key Technical Advantages

• Load Sensing Optimization: Automatically adjusts pump output flow to match the control valve requirements, preventing energy waste and reducing fuel consumption by up to $15\%$.

• Compact Triple-Stage Flow: Supplies two independent main flows and one pilot flow from a single unit, simplifying hydraulic manifold design.

• Enhanced Durability: Hardened piston shoes and swashplate cradles provide resistance against fluid contaminants and high thermal loads.

• Precision Controllability: Fine-tuned flow curves allow for smooth multi-functioning (e.g., simultaneous traveling and boom lifting).

Application Areas

• Construction: Main hydraulic pump for mini-excavators from Kubota, Yanmar, Sany, and Takeuch.

• Forestry: Powering the attachments and propulsion of small harvesters.

• Utility Work: Reliable power source for compact loaders and trenching machines.

Expert Maintenance Tips

• Monitor Case Drain Flow: An increase in case drain flow indicates internal wear of the piston-cylinder block interface. Regular flow testing can prevent catastrophic failure.

• Hydraulic Oil Quality: To protect the high-speed rotating components of the PSVL2-36CG-2, maintain oil cleanliness at $ISO\text{ 18/16/13}$ or better.

• Initial Priming: Before the first engine start after installation, fill the pump case with filtered hydraulic fluid through the drain port to ensure lubrication of the swashplate bearings.

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