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PGP505 Low Pressure Gear Pump

The Parker PGP505 Series is a high-performance, fixed-displacement aluminum gear pump designed for high-pressure hydraulic applications. Part of the renowned PGP500 family, it features a heavy-duty 13-tooth gear profile and advanced pressure-balanced wear plates, which ensure superior volumetric efficiency and exceptionally low noise levels.
  • 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 Gear Pump  Overview

The Parker PGP505 is a high-performance, fixed-displacement aluminum gear pump engineered for demanding hydraulic systems that require high pressure, high efficiency, and quiet operation. As a core member of the PGP500 series, the PGP505 utilizes a high-power density design to deliver exceptional performance in a compact frame, making it the premier choice for material handling, aerial lifts, and industrial power units where reliability is non-negotiable.

Features and Benefits

  • Superior Efficiency and Power Density: Featuring advanced pressure-balanced wear plates, the PGP505 maintains maximum volumetric and mechanical efficiency across its entire operating range, ensuring consistent power output and reduced energy loss.

  • Quiet Operation with 13-Tooth Design: Engineered with a specialized 13-tooth gear profile and optimized flow passages, the pump significantly minimizes pressure pulsations and vibration, resulting in exceptionally low noise levels suitable for noise-sensitive environments.

  • High-Pressure Capability: Built to handle rigorous duty cycles, the PGP505 supports continuous operating pressures of up to 275 bar (4000 psi), allowing it to perform heavy-duty tasks that typically require much larger or heavier cast-iron pumps.

  • Robust Aluminum Construction: The high-strength, extruded aluminum body provides an excellent strength-to-weight ratio and superior heat dissipation, ensuring the pump remains durable and cool during prolonged periods of high-load operation.

  • Extensive Customization Options: With a wide array of displacements (2.0 to 13.0 cc/rev), SAE/DIN/ISO mounting flanges, and multiple shaft configurations (splined, keyed, or tapered), the PGP505 offers seamless integration into both new designs and existing hydraulic circuits.

Model Codes

PGP505 (1)PGP505(2)

Technical Data

Model Code Displacement (cc/rev) Max. Continuous Pressure (bar / psi) Max. Intermittent Pressure (bar / psi) Max. Speed (RPM) Min. Speed (RPM)
20 2 275 / 4000 300 / 4350 4000 500
30 3 275 / 4000 300 / 4350 4000 500
40 4 275 / 4000 300 / 4350 4000 500
50 5 275 / 4000 300 / 4350 4000 500
60 6 275 / 4000 300 / 4350 4000 500
70 7 275 / 4000 300 / 4350 3500 500
80 8 275 / 4000 300 / 4350 3500 500
90 9 250 / 3625 280 / 4060 3000 500
100 10 250 / 3625 280 / 4060 3000 500
120 12 220 / 3200 240 / 3500 2500 500


PGP505 Hydraulic Variable Vane Pump Installation Dimensions


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

Applications

The Parker PGP505 series is a versatile, high-pressure power solution specifically designed for mobile and industrial equipment where compact size and high efficiency are paramount:
  • Material Handling: The primary choice for forklifts, reach trucks, and pallet jacks, providing smooth and precise hydraulic power for lifting and steering functions.

  • Aerial Work Platforms: Extensively used in scissor lifts and cherry pickers to ensure reliable boom movement and stable platform leveling, even under high-load conditions.

  • Construction & Earthmoving: Powers auxiliary functions in mini-excavators, skid steers, and trenchers, such as cooling fan drives and secondary attachment controls.

  • Agricultural Machinery: Integrated into tractors, harvesters, and sprayers to drive hydraulic steering, seeding mechanisms, and small implement lift systems.

  • Industrial Power Units: Ideal for compact hydraulic stations used in manufacturing automation, machine tool clamping, and specialized testing equipment requiring low-noise operation.


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 external gear pump from Parker’s PGP500 aluminum family. It features a heavy-duty, one-piece shaft construction and a specialized 13-tooth gear profile. Engineered for high-pressure durability, it is widely used in mobile and industrial applications that require a compact, lightweight power source with exceptionally low noise levels.

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

The primary difference lies in its precision engineering and high pressure rating:
  • 13-Tooth Design: Unlike standard 8 or 10-tooth pumps, the PGP505’s 13-tooth geometry significantly reduces flow pulsation and operational noise.

  • Pressure-Balanced Plates: It utilizes advanced wear plates that automatically adjust to maintain high volumetric efficiency (up to 98%) even as the pump warms up.

  • High Power Density: It can sustain much higher continuous pressures (up to 275 bar) than typical entry-level aluminum pumps of the same size.

3. What is the working pressure range of PGP505 pumps

The PGP505 series is designed for high-pressure duty cycles. While specific ratings depend on displacement, the series typically handles:

  • Continuous Pressure: Up to 275 bar (4000 PSI).

  • Intermittent/Peak Pressure: Up to 300 bar (4350 PSI).
    This makes it suitable for demanding tasks like heavy lifting and high-torque auxiliary drives.

4. Can PGP505 pumps replace other brands

Yes, the PGP505 is designed with modularity in mind and can often replace equivalent high-performance pumps from brands like Casappa (PLP series), Marzocchi (ALP series), or Bosch Rexroth (AZPF series). When replacing, you must verify the  Model Code for:
  • Mounting Flange: SAE A, European 4-bolt, or German through-bolt.

  • Shaft Type: Splined, keyed, or tapered dimensions.

  • Porting: BSPP, SAE thread, or split flange configurations.

5. What hydraulic oil is suitable for PGP505 gear pumps

To maximize the service life of the high-strength aluminum body and bearings, we recommend:
  • Oil Type: Premium mineral-based hydraulic oils with Anti-Wear (AW) or Extreme Pressure (EP) additives.

  • Viscosity: ISO VG32 to VG68, depending on the ambient temperature. Operating viscosity should ideally stay between 15 and 75 cSt.

  • Filtration: Maintaining cleanliness is critical. Parker recommends a minimum filtration of 18/16/13 per ISO 4406 to protect the precision-machined gear teeth and wear plates.

6. What is the typical speed range of PGP505 pumps

The PGP505 is highly versatile regarding input speed. It typically operates within a range of 500 RPM to 4000 RPM. While it is efficient at high speeds, its pressure-balanced design ensures reliable flow even at lower idle speeds, which is essential for precise control in material handling and aerial lift applications.

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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