PGP20 PGP25 PGP30 PGP31 PGP50 PGP51 PGP75 PGP76 PGP315 PGP330 PGP350 PGP365 series
Parker PGP315 PGP330 gear wheel pump
1. Key Features
Robust Construction & Modular Design:
Triple Pump Configuration: Combines three independent gear pump units into a single compact housing, enabling simultaneous handling of multiple hydraulic circuits (e.g., steering, braking, and auxiliary systems)
Cast Iron or Aluminum Housing: Cast iron variants (e.g., PX series) ensure durability in high-pressure environments, while aluminum models (e.g., PGM500 series) offer lightweight efficiency
Hardened Steel Gears: Precision-machined gears with hardened surfaces reduce wear and extend service life, even under continuous pressures up to 275–276 bar.
High-Pressure Performance:
Continuous Pressure Rating: Operates reliably at 275 bar (PGP series) and up to 276 bar (PX series), with intermittent peaks reaching 350 bar in heavy-duty models
Pressure-Balanced Floating Sleeves: Minimize internal leakage and maintain volumetric efficiency >95% across varying loads
Low Noise and Smooth Operation:
Optimized Gear Profiles: 12- or 13-tooth helical gears (e.g., PGP511 and PX series) reduce pressure pulsation, achieving noise levels <70 dB
Anti-Cavitation Design: Prevents vapor bubble formation in suction lines, ensuring stable performance in high-viscosity fluids
Versatile Fluid Compatibility:
Handles fluids ranging from ISO VG 32–68 (hydraulic oils, synthetic lubricants) to shear-sensitive liquids like resins or adhesives
Integrated Control Valves:
Supports optional integrated valves (e.g., pressure relief, cross-port relief, proportional valves) for system flexibility and reduced external plumbing
2. Advantages
Multi-Functionality:
Ideal for complex systems requiring independent circuits (e.g., construction machinery, agricultural equipment), reducing the need for multiple standalone pumps
Energy Efficiency:
High volumetric efficiency and pressure-balanced components lower power consumption, aligning with sustainability goals
Durability in Harsh Environments:
Contamination-resistant seals and thermal management systems ensure reliability in mining, construction, and marine applications
Ease of Maintenance:
Modular design simplifies disassembly for servicing, while self-adjusting components (e.g., floating sleeves) reduce wear and extend maintenance intervals
Cost-Effectiveness:
Consolidates three pumps into one unit, reducing installation space, weight, and total ownership costs compared to separate systems
Detailed pictures




technical specifications
Technical Specifications
| Parameter | Specifications |
|---|---|
| Max Continuous Pressure | 275–276 bar |
| Displacement Range | 6–161 cc/rev (varies by model) |
| Speed Range | Up to 3,500 RPM |
| Fluid Temperature | -20°C to +90°C |
| Valve Options | Pressure relief, anti-cavitation, solenoid control |
Industry Applications
Mobile Hydraulics: Excavators, loaders, and tractors requiring multi-circuit control
Industrial Systems: CNC machines, plastic injection molding, and hydraulic presses
Specialty Applications: Marine steering systems and snowplows
Comparison with Competitors
| Feature | Parker Triple Gear Pump | Standard Gear Pumps |
|---|---|---|
| Pressure Capacity | Up to 276 bar | Typically 200–250 bar |
| Noise Level | <70 dB | 75–85 dB |
| Configuration | Triple-unit integration | Single-unit designs |
| Valve Integration | Yes (customizable) | Limited or none |
Why Choose the P330?
The P330 series combines high-pressure resilience, modular flexibility, and durable engineering, making it a top choice for heavy-duty hydraulic systems. Its compliance with global standards and Parker's technical support further enhance its reliability
For detailed specifications or custom configurations, refer to Parker's official documentation or authorized distributors.
Technical Specifications
| Parameter | Details |
|---|---|
| Displacement | Up to 65 cm³/rev (3.9 in³/rev) |
| Max Flow Rate | Dependent on speed and displacement |
| Weight | Up to 19 kg (41 lbs) |
| Port Locations | Side or rear ports with flange/threaded options |
| Shaft Type | SAE, ISO, or DIN standards |
Parker gear pumps Application
The PGP330 is engineered for industries requiring rugged hydraulic power:
Material Handling: Forklifts, cranes, and conveyor systems.
Agriculture: Harvesters, tractors, and irrigation equipment.
Construction: Excavators, loaders, and compactors.
Forestry & Mining: Log splitters, drilling rigs, and hydraulic presses

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