Parker PGP505 PGP530 Hydraulic Gear Pump | 7029110058 7029120005 | Excavator Loader Pump

The Parker PGP500 Series from LIC Hydraulic, including the PGP505 and PGP530, represents the benchmark for high-performance aluminum gear pumps in the mobile equipment industry. Units with part numbers 7029110058, 7029120005, and 7029120058 are precision-engineered to meet the demanding flow and pressure requirements of modern excavators and loaders. Designed for long-term durability in harsh environments, these pumps offer superior volumetric efficiency and quiet operation. We provide 100% drop-in replacements that match the original factory specifications for all mounting, shaft, and porting configurations.

Technical Highlights

• Part Numbers: 7029110058, 7029120005, 7029120058.

• Series: PGP505 (Micro/Mini), PGP530 (Medium Duty).

• Max Pressure: Up to $275\text{ bar}$ ($4000\text{ psi}$) continuous.

• Design: High-strength aluminum, two-piece bushing-block construction.

Core Advantages

• Advanced Noise Reduction: The unique 13-tooth gear profile minimizes flow ripple, significantly reducing the “hum” typically associated with gear pumps, which is essential for meeting modern site noise regulations.

• High Volumetric Efficiency: Pressure-balanced wear plates maintain a tight seal against the gear faces, ensuring that the loader’s steering or the excavator’s pilot functions remain responsive even as the oil heats up.

• Robust Aluminum Build: The high-tensile aluminum alloy housing provides excellent heat dissipation and a high power-to-weight ratio, preventing engine compartment overheating.

• Multi-Section Versatility: The PGP series supports tandem and triple pump configurations, allowing a single PTO drive to power multiple hydraulic functions efficiently.

Expert Maintenance Tips

• Suction Integrity: Ensure the intake hose is not kinked or collapsing. Aluminum gear pumps are sensitive to cavitation, which can pit the internal housing and lead to immediate loss of pressure.

• Fluid Cleanliness: Maintain your hydraulic system at ISO 18/16/13 or better. Fine particulates act as an abrasive between the wear plates and gear faces, causing premature internal leakage.

• Seal Check: During installation, verify that the shaft seal is lubricated. Running a pump “dry” at startup can damage the shaft seal and cause external leaks or air ingestion into the hydraulic circuit.