Parker PGP517 & P31 Gear Pump | 3339121250, 3129612019 | Tandem Hydraulic Pump

Parker PGP517 & P31 Series High-Performance Tandem Hydraulic Gear Pumps

Product Overview: The Parker PGP/P Series stands as the global powerhouse for heavy-duty mobile machinery hydraulics. This featured selection includes core precision models: the integrated tandem pump 3339121250 (PGP517B0330CD1H3NP4P2C-517A023) and the rugged cast iron 3129612019 (P31A297BEOH17-25). The PGP517 utilizes high-strength aluminum bodies with a tandem series design, enabling multi-circuit supply from a single drive shaft. Meanwhile, the P31 series features a full cast iron construction, specifically engineered for the extreme pressures and shock loads of mining, construction, and dump truck environments. Both units maintain elite volumetric efficiency at peak pressures up to 28 MPa.

Key Technical Advantages:

• Efficient Tandem Integration: The PGP517 series configuration (e.g., 330/023 displacement combo) supports simultaneous operation of primary and auxiliary circuits, optimizing installation space and simplifying piping.

• Superior Pressure Resilience: The P31 cast iron pump is rated for 24 MPa, while the reinforced PGP517 handles peaks reaching 28 MPa (4060 PSI), built to absorb instantaneous load shocks.

• High Volumetric Efficiency: Features automatic axial gap-compensated side plates to minimize internal leakage, maintaining efficiencies over 93% throughout the pump’s service life.

• 100% Plug-and-Play Replacement: Strictly adheres to original Parker/Commercial OEM specifications, ensuring identical flange patterns (e.g., CD1 interfaces), shaft ends, and port positions for guaranteed installation.

• Extended Service Life: Equipped with reinforced sliding bearings and specialized gear coatings, providing superior wear resistance in harsh operational environments.

Detailed Models & Parameters:

• Core Series: Parker PGP517 & Commercial P31 Series.

• Part Numbers: 3339121250, 3129612019.

• Full Model Codes: PGP517B0330CD1H3NP4P2C-517A023, P31A297BEOH17-25.

• Construction: Tandem Integrated / Single Cast Iron Heavy-Duty.

• Pressure Ratings: Rated at 24-25 MPa continuous; Peak at 28 MPa (4060 PSI).

• Target Applications: Wheel loader main pumps, excavator pilot systems, heavy-duty dump truck hoists, and mobile industrial HPUs.