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PGP640 PARKER Triple Gear Pump

The Parker PGP640 Series is a high-performance, fixed displacement cast iron gear pump. It is specifically engineered to handle heavy-duty applications across the construction, material handling, and military sectors.

Model:
PGP640
Brand:
Green Hydraulic
Model Number:
PGP640
Packaging Details:
Standard export carton/plywood case
Testing Before Shipment:
Yes
Cartification:
ISO9001，CE
Application:
1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry
Shaft Type:
Key Shaft and Spline shaft
MOQ:
1 set


Availability:



Inquiry

Product Description

Product Description

PGP640 Gear Pump Overview

The Parker PGP640 is a high-performance, fixed-displacement cast iron gear pump engineered for demanding mobile and industrial hydraulic systems requiring exceptional volumetric efficiency, power density, and long-term durability. Featuring a robust interlocking two-piece cast iron construction, the PGP640 delivers reliable high-pressure output and is optimized for energy-efficient performance in applications like construction machinery, material handling equipment, and military vehicles where both power and compactness are critical.

Features and Benefits

Rugged Two-Piece Interlocking Cast Iron Construction

The PGP640 utilizes high-strength cast iron pumping sections and an interlocking two-piece body design, delivering superior structural rigidity compared to lighter alternatives. This robust construction minimizes housing deflection and mechanical fatigue under continuous high-pressure duty cycles, ensuring stable, consistent performance and extended service life in harsh, high-vibration environments.
High-Efficiency Journal Bushing Design

Engineered with heavy-duty journal bushings instead of standard roller bearings, the PGP640 maximizes bearing surface area for enhanced load distribution in high-pressure operations. This design improves tolerance to fluid contamination and thermal shock, maintaining high volumetric efficiency while protecting internal components from premature wear during intensive, continuous use.
Advanced Pressure-Balanced Thrust Plates

Equipped with precision pressure-balanced thrust plates, the PGP640 automatically optimizes internal clearances between gear faces and the housing. This minimizes internal fluid bypass and friction, ensuring exceptional mechanical efficiency and consistent power delivery across a wide range of operating temperatures, pressures, and speeds.
Superior High-Pressure Capability

Despite its compact footprint, the PGP640 is engineered to handle continuous operating pressures of up to 275 bar (4,000 psi) (peak pressures up to 310 bar). Its high-strength alloy steel gears and precision-machined components allow it to power high-force actuators and complex hydraulic circuits with smooth, reliable flow, even in the most demanding applications.
Modular Versatility and Installation Flexibility

The PGP640 series offers a versatile range of displacements (from 40 to 80 cc/rev) and supports standard SAE mounting configurations, with options for single or multi-section pumps. It features multiple porting options and bi-rotational (CW/CCW) capabilities, along with compatibility with integrated valves (pressure relief, anti-cavitation, cross-port relief), providing unmatched installation flexibility for cramped chassis environments and specialized mobile applications.

Model Codes

Technical Data

Model Code	Displacement (cm3/r)	Displacement (in3/r)	Max. Continuous Pressure (bar/psi)	Max. Speed (RPM)	Min. Speed (RPM)
400	40	2.44	275 / 4000	3500	500
450	45	2.75	275 / 4000	3500	500
500	50	3.05	275 / 4000	3500	500
550	55	3.36	275 / 4000	3500	500
600	60	3.66	275 / 4000	3250	500
650	65	3.97	275 / 4000	3250	500
700	70	4.27	275 / 4000	3000	500
750	75	4.58	275 / 4000	3000	500
800	80	4.88	275 / 4000	3000	500

PGP640 Hydraulic Gear Pump Installation Dimensions

Applications

The Parker PGP640 series provides a rugged, high-pressure power solution specifically tailored for demanding mobile and industrial hydraulic systems where high power density, continuous-duty reliability, and compact installation are critical.

• Construction Machinery: Ideal for excavator auxiliary circuits, loader lift arms, and backhoe stabilizers, where the PGP640’s high-pressure capability and bushing design deliver consistent power for lifting, digging, and material handling operations.

• Material Handling Equipment: A preferred choice for forklift hydraulic systems, aerial work platforms, and container handlers, offering high volumetric efficiency to maintain smooth, responsive lifting and tilting under heavy loads.

• Agricultural Machinery: Frequently used in combine harvesters, sprayer boom controls, and tractor implement hydraulics, handling variable load shocks, fluid contamination, and high-cycle duty common in outdoor field environments.

• Commercial Vehicles & Truck-Mounted Systems: Optimized for refuse truck compaction, crane truck hydraulics, and utility bucket trucks, where the cast iron construction and pressure-balanced design ensure long-term durability under continuous high-pressure cycles.

• Industrial Hydraulic Power Units: Suited for machine tools, presses, and conveyor systems requiring reliable high-pressure flow, with multi-section configurations available to power multiple circuits from a single power source.

• Specialized Mobile Equipment: Commonly integrated into military vehicles, snow plow systems, and winch drives, where the PGP640’s contamination tolerance and robust construction deliver performance in harsh, vibration-heavy conditions.

Vane Pump Application

Packaging & Delivery

PGP640 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.

PGP640 Gear Pump FAQ:

1. What are PGP640 series gear pumps?

The PGP640 is a high-performance, fixed-displacement journal bushing-style cast iron gear pump from Parker’s renowned gear pump lineup. Featuring a rugged two-piece interlocking cast iron construction, it is specifically engineered for demanding mobile and industrial hydraulic systems that require high structural rigidity, reliable high-pressure output, and exceptional volumetric efficiency, making it ideal for both single and multi-section pump configurations.

2. What makes the PGP640 different from standard aluminum gear pumps?

The PGP640 is built for durability in heavy-duty environments where aluminum pumps may fail:

Rugged Cast Iron Housing: Unlike aluminum pumps that can suffer from housing deflection or "body stretching" at high pressures, the PGP640’s high-strength cast iron frame maintains tight internal clearances, minimizing fluid bypass and extending service life under continuous high-pressure duty cycles.
Journal Bushing & Pressure-Balanced Design: It utilizes heavy-duty journal bushings instead of standard roller bearings, paired with pressure-balanced thrust plates. This provides superior load distribution, greater resistance to fluid contamination and thermal shock, and maintains high efficiency across all operating conditions.
Modular & Multi-Section Versatility: Designed for both single and multi-section configurations, the PGP640 offers unmatched installation flexibility, including bi-rotational options, multiple porting choices, and compatibility with integrated valves, unlike standard single-port aluminum pumps.

3. What is the working pressure range of PGP640 pumps?

The PGP640 is a high-pressure specialist built for demanding applications. Depending on the specific displacement, the series typically handles:

Continuous Pressure: Up to 4,000 PSI (275 bar).
Intermittent/Peak Pressure: Up to 4,500 PSI (310 bar).

This robust pressure rating makes the PGP640 ideal for powering high-force actuators, compaction systems, and complex hydraulic circuits on construction, material handling, and commercial vehicles.

4. Can PGP640 pumps replace other brands?

Yes, the PGP640 is a high-quality alternative to other premium cast iron gear pumps. It is often used as a replacement or upgrade for:

Vickers/Gresen: V20, V20F Series
Metaris/Muncie: MH640, PH Series
Commercial Intertec/Parker: Older P30, P310 Series
Permco: P2000, P3000 Series

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

5. What hydraulic oil is suitable for VG0 gear pumps？

To protect the precision journal bushings and hardened steel gears, the following is recommended:

Oil Type: Premium mineral-based hydraulic fluids with strong Anti-Wear (AW) additive packages, compatible with DIN and ISO standards.
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 down to 2,000 SUS (430 cSt).
Filtration: Cleanliness is vital for bushing lubrication. A minimum filtration of ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging the thrust plates and bushing faces.

6. What is the typical speed range of PGP640 pumps?

The PGP640 is designed for variable speed operation across different applications:

Maximum Continuous Speed: Up to 3,500 RPM (for smaller displacements), tapering to 3,000 RPM for larger displacements.
Minimum Recommended Speed: 500 RPM, to ensure proper bearing lubrication and volumetric efficiency.

The speed range is optimized for both direct engine drive and PTO applications, ensuring reliable performance from low-speed, high-torque conditions to high-speed, continuous-duty cycles.

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.

Certifications & Quality Assurance

PGP640 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.

FAQ

1.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.

2.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.

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

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

4.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.

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.

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.