Product Overview
The PGP517A0500CD1H3MP4P3B1 is an aluminum external gear pump from the Parker Hannifin PGP500 series. Built on the PGP517 frame size, this fixed-displacement pump delivers 50.0 cm³/rev displacement.
Engineered with a high-strength aluminum alloy housing and three-piece modular construction, the pump features a 13-tooth gear profile and pressure-balanced floating thrust blocks, delivering exceptional power density and volumetric efficiency while significantly reducing overall weight. Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine Parker PGP517 series pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing on dedicated test benches to validate pressure-flow-efficiency performance curves.
Brand Disclaimer: This product is a high-quality compatible replacement engineered for full interchangeability with Parker Hannifin original equipment. All Parker brand names and model codes are referenced solely to indicate compatibility and interchangeability. This product is manufactured by an independent producer and is not an original Parker product.
Technical Specifications
Model Code: PGP517A0500CD1H3MP4P3B1
Brand Series: Parker Hannifin PGP517 (PGP500 Series)
Pump Type: Fixed Displacement Gear Pump
Displacement: 50.0 cm³/rev
Continuous Operating Pressure: 250 bar
Peak Pressure: 275 bar
Maximum Speed: 3,400 rpm
Minimum Speed: 500 rpm
Maximum Flow Rate: 168 L/min
Rotation Direction: Clockwise (CW) / Counterclockwise (CCW) available
Housing Material: Aluminum alloy
Seals: NBR (Nitrile rubber)
Hydraulic Fluid: Mineral oil HLP
Recommended Viscosity: 12 – 100 cSt
Operating Temperature Range: +15°C to +80°C
Mounting: SAE standard flange mounting
Inlet Pressure: 0.8 – 2.0 bar (absolute)
Maximum Pressure Rise Rate: 3,000 bar/s
Weight: Approx. 9.49 kg
Country of Origin: Czech Republic
Key Technical Advantages
1. Lightweight Aluminum Alloy Construction
The high-strength aluminum alloy housing delivers excellent pressure containment (250 bar continuous, 275 bar peak) while significantly reducing overall weight (approx. 9.49 kg). Compared to cast iron equivalents, the weight reduction is substantial—making it ideal for weight-sensitive mobile hydraulic applications.
2. 13-Tooth Optimized Gear Profile & Low-Noise Operation
The PGP517 features a 13-tooth gear profile, providing smoother meshing characteristics compared to conventional gear pumps. Combined with optimized flow distribution geometry, pressure pulsation is minimized, ensuring exceptionally smooth and quiet operation. This low-noise characteristic is particularly advantageous for cab-near installations and urban equipment operations.
3. Pressure-Balanced Floating Thrust Blocks & High Volumetric Efficiency
Pressure-balanced floating thrust blocks automatically compensate for gear end clearance under high pressure. Paired with journal bushings, this design significantly reduces internal leakage and friction losses, delivering high efficiency across the full pressure range.
4. Three-Piece Modular Construction & Multi-Section Capability
The three-piece modular construction simplifies maintenance and supports single, tandem, and multiple pump configurations. Flexible series integration with PGM gear motors and other PGP series pumps enables simplified hydraulic system architecture.
5. Broad Speed & Operating Range
Supports a wide speed range of 500 to 3,400 rpm, maintaining stable flow characteristics whether operating at low-speed precision control or high-speed continuous duty—one pump for diverse application requirements.
6. 100% Simulated Duty-Cycle Testing
Every pump is 100% tested on dedicated hydraulic test benches under simulated real-world operating conditions—validating pressure-flow characteristics and efficiency curves at rated pressure (250 bar), peak pressure (275 bar), and full speed range—ensuring zero-defect, plug-and-play performance upon installation.
Application Areas
Aerial Lifts: Boom elevation and rotation hydraulic systems
Agricultural Machinery: Tractor hydraulic systems, combine harvester implement drives
Construction Equipment: Mini-excavators, loader auxiliary hydraulic systems
Forestry Equipment: Wood processing and material handling
Material Handling Equipment: Forklifts, stacker hydraulic systems
Vocational & Municipal Equipment: Street sweepers, refuse compactors
Hydraulic Power Units (HPU): Industrial and mobile power stations
Power Steering & Brake Systems: Priority valve configurations available for steering and brake pumps
Expert Maintenance Tips
1. Inlet Line Requirements
Keep the suction line short and straight with adequate diameter. Inlet pressure must be maintained between 0.8 – 2.0 bar (absolute) , with absolute minimum of 0.5 bar (short-term, no-load). Prevent cavitation from excessive inlet resistance.
2. Fluid Cleanliness Control
Maintain system fluid cleanliness to ISO 4406 19/17/14 or better. Install a ≤10 μm absolute filtration filter upstream of the inlet port. The PGP500 series supports integration of multiple control valves including pressure relief valves and priority valves.
3. Coupling Alignment Precision
Flexible couplings are recommended for direct drive. Ensure pump shaft-to-drive shaft coaxiality deviation ≤0.05 mm and angular deviation ≤0.5°. If the pump is required to withstand axial or radial loads, confirm that a configuration with前置 bearings is selected.
4. First-Start Priming Procedure
Before initial startup, prime the pump by bleeding air through the drain port or a loosened outlet fitting. Perform 2–3 jog starts with the outlet open (no load) until oil fills the pump cavity without air bubbles, then connect the load circuit for full operation.
5. Fluid Temperature Monitoring
Recommended operating temperature range: +15°C to +80°C. During cold starts when oil temperature falls below 15°C, preheat the fluid or reduce startup speed to prevent cavitation damage from excessive viscosity.
6. Rotation Direction Confirmation
Verify rotation direction (clockwise CW or counterclockwise CCW) based on the model code. Always confirm that the drive motor/engine rotation matches the pump before installation.
