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PGP505 Parker Aluminum Gear Pump

The Parker PGP505 is a high-performance aluminum gear pump, featuring compact structure, light weight and high working pressure. It delivers stable flow, low noise and reliable durability for long-term operation. Widely used in construction machinery, agricultural equipment and general hydraulic systems, it supports various displacement, shaft and port configurations to meet diverse industrial hydraulic transmission needs.
  • PGP505

  • Green Hydraulic

  • PGP505

  • Standard export carton/plywood case

  • Yes

  • ISO9001,CE

  • • Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)

  • 1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry

  • Key Shaft and Spline shaft

  • 1 set

Availability:
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Product Description

PGP505 SERIES Gear Pump  Overview

The Parker PGP505 is a high-performance, fixed-displacement aluminum gear pump engineered for compact hydraulic systems requiring reliable, lightweight power delivery without compromising efficiency. Featuring a rugged, high-strength aluminum alloy construction, the PGP505 is specifically designed to deliver an excellent power-to-weight ratio, making it an ideal choice for agricultural machinery, construction equipment, material handling and general industrial applications where space and weight savings are critical, and consistent performance is essential.

Features and Benefits

  • Lightweight High-Strength Aluminum Construction:
    The PGP505 is built with corrosion-resistant, high-grade aluminum bodies and covers, offering exceptional rigidity while being significantly lighter than cast iron alternatives. This robust yet lightweight design minimizes overall system weight, reduces installation stress and allows for direct mounting in mobile equipment where payload and space are at a premium.
  • High-Efficiency Gear & Bearing Design:
    Utilizing precision-machined spur gears and advanced journal bearings, the PGP505 provides increased bearing surface area that excels in continuous-duty operations. This design is inherently more tolerant of fluid contamination and thermal shock, maintaining high volumetric efficiency while protecting the pump from premature wear during long hours of intensive use.
  • Advanced Pressure-Compensated Wear Plates:
    Equipped with sophisticated axial compensation technology, the PGP505 features pressure-balanced wear plates that automatically optimize internal clearances between the gear faces and the housing. This minimizes internal fluid bypass and friction, ensuring exceptional mechanical efficiency and consistent power delivery across all operating temperatures and pressure ranges.
  • Superior High-Pressure Capability:
    Despite its compact footprint, the PGP505 is engineered to handle continuous operating pressures of up to 275 bar (4,000 psi). Its high-strength alloy steel gears and precision-machined components allow it to power a wide range of hydraulic cylinders, motors and circuits with smooth, reliable flow, even under heavy load conditions.
  • Modular Versatility and Installation Flexibility:
    The PGP505 series offers a versatile range of displacements (from 2 to 20 cc/rev) and supports standard SAE "A" mounting flange and shaft options, including keyed and splined shafts. With multiple port configurations (side, rear and end ports), it provides unmatched installation flexibility for cramped chassis environments and specialized mobile or industrial applications.

Model Codes

PGP505(1)PGP505(2)

Technical Data

Model Size Displacement (cm/rev) Max. Continuous Pressure Max. Peak Pressure Max. Speed (rpm) Min. Speed (rpm)
20 2 275 bar (4000 psi) 300 bar (4350 psi) 4000 500
30 3 275 bar (4000 psi) 300 bar (4350 psi) 4000 500
40 4 275 bar (4000 psi) 300 bar (4350 psi) 4000 500
50 5 275 bar (4000 psi) 300 bar (4350 psi) 4000 500
60 6 275 bar (4000 psi) 300 bar (4350 psi) 3600 500
80 8 275 bar (4000 psi) 300 bar (4350 psi) 3600 500
100 10 275 bar (4000 psi) 300 bar (4350 psi) 3600 500
120 12 275 bar (4000 psi) 300 bar (4350 psi) 3200 500
160 16 250 bar (3625 psi) 275 bar (4000 psi) 3000 500
200 20 250 bar (3625 psi) 275 bar (4000 psi) 3000 500

PGP505 Hydraulic Gear Pump Installation Dimensions

PGP505(3)PGP505(4)PGP505(5)PGP505(6)PGP505(7)PGP505(8)

Applications

The Parker PGP505 series provides a compact, lightweight high-pressure power solution specifically tailored for mobile and industrial hydraulic systems where space efficiency, low weight, and reliable performance are required:
  • Agricultural Machinery: A primary choice for tractors, harvesters, sprayers, and implement hydraulic systems, where the compact aluminum construction and efficient operation deliver consistent power for lifting, steering, and control functions.

  • Construction Equipment: Ideal for compact excavators, skid-steer loaders, aerial work platforms, and small cranes, offering durable and space-efficient hydraulic power under demanding, variable-load conditions.

  • Material Handling: Widely used in forklifts, pallet jacks, tail lifts, and conveyor systems, providing reliable high-cycle performance for lifting, tilting, and load-handling operations.

  • Commercial Vehicles & Truck-Mounted Systems: Suited for utility trucks, aerial lifts, and refuse collection equipment, where its high power-to-weight ratio and flexible mounting options integrate seamlessly with truck-mounted power take-off (PTO) setups.

  • General Industrial Hydraulics: Applied in machine tools, conveyor systems, and light-duty presses, delivering stable, efficient power for low-to-medium pressure circuits in factory automation and process equipment.


Vane Pump Application



Packaging & Delivery

PGP505 pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.


PGP505 Gear Pump  FAQ

1. What are PGP505 series gear pumps

The PGP505 is a high-performance, fixed-displacement aluminum gear pump and a core component of Parker’s renowned PGP500 Series. Featuring a rugged, lightweight high-strength aluminum construction, it is specifically engineered for compact hydraulic systems that require high power-to-weight ratio and reliable power output, particularly in mobile equipment, agricultural machinery, and general industrial applications.

2. What makes the PGP505 different from standard aluminum gear pumps

The PGP505 is built for lightweight efficiency and versatility where cast iron pumps add unnecessary weight:
  • Lightweight Aluminum Housing: Unlike cast iron pumps that add significant weight, the PGP505’s high-grade aluminum frame delivers strength while reducing overall system weight, making it ideal for mobile applications where payload is critical.

  • High-Efficiency Gear & Bearing Design: Utilizing precision-machined spur gears and advanced journal bearings, it offers smooth, low-noise operation with consistent volumetric efficiency, even at varying speeds.

  • Flexible Port & Mounting Options: Available with side, rear, and end port configurations, plus standard SAE "A" mounting flanges, the PGP505 offers greater installation flexibility than fixed-port cast iron designs in cramped chassis environments.

3. What is the working pressure range of PGP505 pumps

The PGP505 is a compact high-pressure specialist. Depending on the specific displacement, the series typically handles:

  • Continuous Pressure: Up to 275 bar (4,000 PSI) for most models.

  • Intermittent/Peak Pressure: Up to 300 bar (4,350 PSI).

This robust pressure rating makes the PGP505 ideal for driving lifting, steering, and auxiliary hydraulic systems on agricultural, construction, and material handling equipment.

4. Can PGP505 pumps replace other brands

Yes, the PGP505 is a high-quality alternative to other premium compact aluminum gear pumps. It is often used as a replacement or upgrade for:

  • Casappa: PLP20 Series

  • Bosch Rexroth: AZPF Series

  • Marzocchi: GHP2 Series

To ensure a successful swap, verify the Mounting Flange (SAE A), Shaft Type (keyed or splined), and Displacement (cc/rev) to match your existing system.

5. What hydraulic oil is suitable for PGP505 gear pumps

To protect the precision gears and journal bearings, the following is recommended:

  • Oil Type: Premium mineral-based hydraulic fluids with strong Anti-Wear (AW) additive packages, compatible with aluminum components.

  • Viscosity: Standard ISO VG32 to VG68. The optimal operating range is 100 to 150 SUS (20 to 30 cSt), though it can handle cold starts up to 2,000 SUS (430 cSt).

  • Filtration: Cleanliness is vital for long service life. A minimum filtration of ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging gear and bearing surfaces.

6. What is the typical speed range of PGP505 pumps

  • Maximum Speed: 3,000–4,000 RPM (varies by displacement; smaller displacements support higher speeds up to 4,000 RPM).

  • Minimum Speed: 500 RPM, ensuring stable operation at low engine speeds without cavitation or pressure drop.

7. Do you provide OEM or customized services

Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.

8. How can I get a quotation quickly

Please provide the following details:

  • Model or displacement

  • Working pressure

  • Speed

  • Quantity
    We will reply within 12 hours with a competitive quotation.


Certifications & Quality Assurance

PGP505 pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.



Green Hydraulic Patent Certificate

FAQ

1.How does the variable displacement work?

The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.


2.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.


3.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.


4.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.


5.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).


Unedited footage of the Green Hydraulic Factory

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

Unedited footage of the Green Hydraulic Factory

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.

Unedited footage of the Green Hydraulic Factory

Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.

Unedited footage of the Green Hydraulic Factory3

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

Unedited footage of the Green Hydraulic Factory4

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Unedited footage of the Green Hydraulic Factory5

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.


Green Hydraulic Advantages
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