Parker PGP350 PGP330 PGP511 Hydraulic Multiple Pump | 3239529007 Tandem Gear Pump | High Pressure Interchanger
| Model Number | 3269112506 P315A296VE AB10-65 |
|---|
Product Description
Designed for the complex multi-circuit requirements of modern heavy machinery, our Parker Commercial PGP300 Series (PGP315/330/350/365) combined with PGP511 Series Multiple Hydraulic Gear Pumps are the ultimate power solution. This tandem configuration features a robust cast iron main pump and a high-efficiency aluminum rear pump, balancing high power density with mounting flexibility. As a premier 100% Drop-in Interchangeable replacement for Parker/Commercial units, it matches all OEM mounting dimensions and performance curves. Every multiple pump assembly undergoes 100% simulated load testing to guarantee inter-stage sealing integrity and volumetric efficiency under synchronous high-pressure operation.
Technical Specifications (Sample: PGP350B498 / PGP511A)
Main Pump Series: PGP350 / PGP330 Heavy-Duty Cast Iron
Rear Pump Series: PGP511 High-Performance Aluminum
Model Codes: PGP350B498AB17-7 / PGP511A0100
Main Displacement: 21 cm³/rev – 105 cm³/rev (Per PGP300 specifications)
Rear Displacement Example: 10 cm³/rev (PGP511A0100)
Rated Pressure: 241 bar (3500 PSI)
Peak Pressure: 275 bar (4000 PSI)
Max Speed: 2400 RPM
Shaft Type: SAE B or C Splined/Keyed Shafts
Housing Material: Main-High Strength Cast Iron; Rear-Extruded Aluminum Alloy
Key Technical Advantages
Three-Piece Heavy Duty Cast Iron Body (PGP300): Built with high-resistance ductile iron, these pumps offer superior fatigue strength and shock resistance compared to aluminum-only pumps, standing up to continuous high-load pulsations.
Advanced Inter-stage Sealing: Utilizes hydrostatic pressure-balanced thrust plates and premium V-packings between stages to handle backpressure and prevent internal leakage, maintaining a volumetric efficiency of over 95%.
Modular Versatility: Allows users to combine a large-displacement PGP350 with a precision PGP511 pilot pump. This integration saves significant space and simplifies the hydraulic circuit.
Optimized Noise Reduction: Features oversized heavy-duty roller bearings and precision-ground hardened alloy gears, minimizing mechanical vibration and operational noise levels.
Application Areas
Construction Equipment: Wheel loader main pumps, excavator auxiliary circuits, and motor graders.
Municipal Vehicles: Multi-stage drive systems for refuse compactors and street sweepers.
Mining Machinery: Underground haul trucks, drill rigs, and hydraulic power units (HPUs).
Expert Maintenance Tips
Cavitation Prevention: Due to high flow demands, ensure the suction lines are perfectly sealed and appropriately sized to prevent cavitation in the tandem stages.
Pre-Start Lubrication: Always fill the pump housing with clean hydraulic oil before initial startup. Dry running for even seconds will cause catastrophic wear to the thrust plates.
Load Limit Monitoring: When adjusting the system, ensure the combined power requirements of all stages do not exceed the torque limit of the primary drive shaft.
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