Parker PGP500 Series Hydraulic Gear Pump | PGP511 PGP517 Replacement

Genlu Hydraulic proudly introduces our PGP500 Series high-pressure gear pumps, the optimized power solution for demanding engineering and industrial hydraulic systems. This series serves as a precise match for Parker technical specifications, comprehensively covering PGP503, PGP505, PGP511, PGP517, PGP315, and PGP330 ranges, and offering perfect compatibility for configurations like PGP511B0230CS2D3NL2L2B1B1. Genlu unequivocally guarantees 100% Drop-in Interchangeability in mounting dimensions, drive shafts, port configurations, and performance characteristics. Backed by our uncompromising 100% Simulation Load Testing, each pump is validated for volumetric efficiency, shaft integrity, and sealing performance under load before dispatch, ensuring relentless, stable, and high-efficiency power delivery for your hydraulic circuits.

Technical Specifications 

• Product Series: Parker PGP500 / PGP300 Series High-Pressure Gear Pump

• Representative Models: PGP511B0230CS2D3NL2L2B1B1

• Displacement Range: 0.8 cc/rev to 70 cc/rev (Model-dependent)

• Rated Operating Pressure: 250 – 280 bar (Model-dependent)

• Max Peak Pressure: 300 bar

• Speed Range: 500 – 4000 rpm

• Structural Configuration: Three-piece high-strength aluminum/cast-iron, pressure-balanced bearing blocks

• Fluid Compatibility: Mineral oils, water-glycol, phosphate esters

Key Technical Advantages:

• Pressure-Balanced Bearing Block Technology: Utilizes high-performance pressure-balanced bearing blocks that automatically adjust axial clearance. This maintains peak volumetric efficiency even at high pressures, drastically minimizing internal leakage and enhancing overall system energy efficiency.

• Optimized Low-Noise Gear Geometry: Precision CNC gear-profile modification minimizes vibration and noise caused by tooth engagement. This results in significantly quieter operation, improving working environments in heavy-duty machinery.

• High-Strength Three-Piece Architecture: Constructed from high-grade alloys, the modular three-piece design provides superior rigidity against shock and distortion, while supporting versatile multi-pump configurations for complex industrial applications.

• Reinforced Sealing System: Equipped with high-pressure rated Viton shaft seals, offering exceptional heat and wear resistance. This ensures integrity against external dust and contamination typical in construction environments, preventing premature seal failure.

Application Areas:

• Construction Machinery: Auxiliary systems for excavators, loader work valve power units.

• Agricultural & Forestry: Tractor lift systems, harvester cutting mechanisms, brush chippers.

• Material Handling: Hydraulic power units for forklifts and lifting platforms.

• Industrial Automation: Stationary Hydraulic Power Units (HPUs), machine tool auxiliary lubrication and cooling circuits.

Expert Maintenance Tips:

• Priming Protocol: Gear pumps must never run dry. After initial installation, prime the pump by pouring clean hydraulic oil into the outlet port and manually rotating the shaft to ensure the internal components are fully lubricated before the first start.

• Fluid Cleanliness Standards: Given the precision clearances, maintain ISO 4406 18/16/13 fluid cleanliness. We strongly recommend a 25μm high-performance return-line filter.

• Alignment Precision: Drive shafts must be free of radial or axial shock loads. Ensure coupling alignment is within 0.05mm TIR (Total Indicator Reading) to prevent uneven bearing wear and premature pump failure.