Product Overview
The PGP500 Series is a high-performance fixed-displacement external gear pump product line from Parker Hannifin, part of the globally recognized PGP/PGM 500 Series aluminum-body gear pump platform. The series covers four frame sizes – PGP503, PGP505, PGP511, and PGP517 – with displacements ranging from 0.8 to 52 cm³/rev. Renowned for its lightweight aluminum construction, high power density, and exceptional low-noise characteristics, the series is widely used in construction machinery, agricultural equipment, material handling, and industrial hydraulic systems.
Key Interchangeability Advantage: Our PGP500 Series gear pumps are manufactured to strict Parker original design specifications, ensuring 100% direct interchangeability with original units. All mounting interfaces, flange dimensions, shaft configurations, and port positions are identical to the original product – no modifications required. Every pump undergoes 100% factory performance testing under simulated operating conditions (covering rated pressure, peak pressure, and full speed range performance curves), guaranteeing plug-and-play reliability with zero performance deviation.
Technical Specifications
PGP500 Series – General Specifications
Product Series: PGP500 Series Aluminum-Body Fixed-Displacement External Gear Pump
Frame Sizes: PGP503 / PGP505 / PGP511 / PGP517 (four sizes)
Displacement Range: 0.8 – 52 cm³/rev
Rated Continuous Operating Pressure: 250 – 275 bar
Peak Pressure: 300 – 310 bar
Speed Range: 500 – 4000 rpm (displacement-dependent)
Body Material: High-strength aluminum alloy
Operating Temperature Range: -15°C to +80°C
Recommended Fluid: Mineral oil
Recommended Fluid Viscosity: 10 – 300 mm²/s
Filtration Requirement: ISO 4406 cleanliness class 18/17/14
Inlet Pressure: 0.8 – 2 bar abs
Minimum Inlet Pressure: 0.5 bar abs (short-time, no load)
PGP503 Series
PGP505 Series
PGP511 Series
Gear Teeth: 12-tooth (low-noise optimized)
Displacement Options: 8.0 / 10.0 / 12.0 / 14.0 / 16.0 / 19.0 / 22.0 / 25.0 / 28.0 cm³/rev
Maximum Pressure: 250 bar
Maximum Speed: 5000 rpm
PGP517 Series
Related Model: PGP315 Series / 3269110461
PGPE315A193EJAB10-66 (Order No. 3269110461) belongs to Parker’s PGP315 Series (medium-high pressure, general-purpose cast iron gear pump), with displacement covering 7.6 – 40.6 cm³/rev, rated pressure 241 bar (3500 psi) , peak pressure 275 bar (4000 psi) , and maximum speed 3000 rpm. This series features 12-tooth high-precision steel gearswith SAE A/B 2-bolt flange mounting.
⚠️ Note: 3269110461 / PGPE315A193EJAB10-66 belongs to the PGP315 cast iron series, not the PGP500 aluminum series. The two series differ in housing material, pressure ratings, and application scenarios – please verify your selection accordingly.
Key Technical Advantages
1. High-Strength Aluminum Body for Lightweight High Power Density
The PGP500 Series features a high-strength aluminum housing that delivers substantial weight reduction while maintaining structural integrity – particularly critical for weight-sensitive mobile equipment applications.
2. Optimized Gear Tooth Profiles for Ultra-Low Noise
Different frame sizes employ differentiated gear tooth designs: PGP503 features 9-tooth gears, PGP505 and PGP517 feature 13-tooth gears, and PGP511 features 12-tooth gears – combined with optimized flow metering to minimize pressure pulsation for exceptionally quiet, smooth operation. The PGP500H Silent Series achieves an average noise reduction of 15 dB(A) compared to standard gear pumps.
3. Pressure-Balanced Floating Bushing Blocks for High Efficiency
Pressure-balanced floating bearing blocks ensure automatic hydraulic clearance compensation between gears and housing under all operating conditions, significantly improving volumetric efficiency and minimizing internal leakage.
4. Large Journal Diameters and High-Strength Materials for Long Service Life
High-strength materials combined with large journal diameters reduce bearing loads, ensuring reliable long-term operation at pressures up to 275 bar.
5. Flexible Configuration and Multi-Pump Combination Capability
Supports SAE mounting flanges and shaft standards (splined, keyed, tapered, etc.). Capable of integrating various valves, configurable as single, tandem, or triple pumps with common or separate inlets – providing unmatched design flexibility for complex hydraulic systems.
Application Areas
Construction Equipment: Wheel loaders, excavators, skid-steer loaders
Agricultural Machinery: Combine harvesters, seeders, sprayers
Material Handling Equipment: Forklifts, telehandlers, reach stackers
Aerial Work Platforms: Scissor lifts, boom lifts
Turf Care Equipment: Professional mowers, golf course maintenance equipment
Vocational & Municipal Equipment: Sanitation vehicles, specialty utility vehicles
Forestry Equipment: Brush chippers, loggers
Industrial Hydraulic Systems: Power units, lubrication systems
Expert Maintenance Tips
1. Pre-Installation Checks
Verify pump rotation direction (clockwise or counterclockwise) matches system requirements.
Check drive shaft and coupling fit precision – never use hammer-driven installation; always use proper tools. Direct drive with flexible coupling is recommended.
Ensure port specifications precisely match hydraulic fittings.
2. First Start-Up & Oil Priming
Prime the pump housing with clean hydraulic oil before first start-up; ensure the suction line is fully filled – never run dry.
Inlet pressure must be maintained within 0.8 – 2 bar abs, with a minimum of 0.5 bar abs.
Recommended fluid: mineral oil, viscosity range 10 – 300 mm²/s.
3. Filtration & Fluid Cleanliness
4. Operating Monitoring
Maintain operating oil temperature within -15°C to +80°C.
If abnormal noise or pressure fluctuation occurs, first check for air ingestion in the system.
No axial or radial loads are permitted on the pump – if required, an outboard bearing must be specified.
5. Multi-Pump Special Considerations
In multiple pump configurations, each stage can be configured with common or separate inlets.
Total drive torque is the sum of all pump stage torques – ensure prime mover output torque meets system requirements.
