Product Description

PGP600 Heavy Duty Cast Iron External Gear Pump Overview

PGP600 series heavy-duty tandem gear pumps are made of high-strength cast iron, built for heavy-load hydraulic applications.
Featured with external gear structure, pressure balance compensation and reliable sealing performance, they achieve high volumetric efficiency and outstanding durability. The tandem dual-pump design supplies separate oil flow for different hydraulic loops, greatly simplifying system piping.
Compliant with SAE international standard interfaces, available in multiple displacements and rotation directions. Stable performance, low vibration and long working life make them widely used in engineering machinery, agricultural machinery and industrial hydraulic fields.

Features and Benefits

High-Performance Hydraulic Tandem Gear Pump Structure
Designed with precision gear transmission and pressure-balanced side plate technology, the PGP600 series provides stable flow output, high volumetric efficiency, and reliable hydraulic performance even under continuous high-pressure conditions.
Low Noise & Smooth Operation
Optimized gear tooth profile and engagement effectively reduce operating noise and pressure pulsation, ensuring quiet and stable hydraulic system operation in heavy-duty construction machinery.
Compact Tandem Design & Flexible Installation
Compact and lightweight cast iron construction with SAE standard flanges and shaft ends allows convenient installation, easy maintenance, and flexible integration into various hydraulic systems. The tandem dual-pump layout supplies separate flow for different circuits, simplifying piping design.
Wide Hydraulic Application Range
Suitable for construction machinery (such as JCB backhoe loaders), agricultural equipment, hydraulic power units, industrial machinery, and mobile hydraulic applications requiring high pressure and dual independent flow.
Durable Construction & Long Service Life
Precision manufacturing and high-strength cast iron materials ensure excellent wear resistance, stable performance, and reliable long-term operation under harsh working conditions.

Specifications

Model Codes

Segment	Code Example	Description
Series & Type	PGP	Parker Gear Pump (external gear type)
Frame Size	620 / 640	Heavy-duty cast iron series; PGP620/640 are the primary tandem pump platforms
Version	A / B	Version variant: A = standard, B = high-pressure modified
Primary Displacement	0520	Primary pump displacement (×10 cm³/rev); `0520` = 52 cm³/rev
Secondary Displacement (Tandem)	0270	Secondary pump displacement (×10 cm³/rev); `0270` = 27 cm³/rev
Rotation Direction	A / C	Rotation from shaft end: A = CCW, C = CW
Shaft Specification	D1	Shaft type (e.g., D1 = 13T spline, SAE B standard)
Seal Material	H3	Seal type: H = Nitrile (NBR), 3 = high-temperature compatible
Port Type	N	Thread/port standard (e.g., N = SAE straight thread / BSP)
Port Sizes	E8 / E6	Suction/delivery port size (e.g., E8 = 1-1/2" suction, E6 = 1-1/11" delivery)
Port Orientation	B1B1	Port arrangement and configuration for tandem pump layout

Technical Data

Parameter	Specification
Series Type	PGP620 / PGP640 Heavy-Duty Cast Iron External Gear Pumps
Configuration	Single / Tandem / Triple Pump Combinations
Displacement Range	19–52 cm³/rev (PGP620); 50–100 cm³/rev (PGP640)
Rated Continuous Pressure	Up to 241 bar (PGP620); Up to 210 bar (PGP640)
Maximum Peak Pressure	Up to 310 bar (PGP620); Up to 275 bar (PGP640)
Operating Speed Range	500–4000 rpm (PGP620); 500–3500 rpm (PGP640)
Recommended Operating Speed	1000–3000 rpm
Volumetric Efficiency	≥ 90% at rated pressure and speed
Mechanical Efficiency	≥ 94% at rated pressure and speed
Fluid Compatibility	Mineral-based anti-wear hydraulic oils (ISO VG32–VG68)
Fluid Temperature Range	-20°C to +80°C (with NBR seals)
Viscosity Range	10–100 cSt (recommended 15–40 cSt at operating temperature)
Mounting Flange	SAE B 2/4-bolt (PGP620); SAE C 2/4-bolt (PGP640)
Shaft Options	SAE spline, parallel key, tapered shaft
Port Types	SAE straight thread, BSPP, NPT
Rotation Direction	Clockwise / Counter-clockwise (viewed from shaft end)
Material Construction	Cast iron housing, steel gears, pressure-balanced bronze side plates
Seal Material	Nitrile (NBR) standard; FKM (Viton) optional for high temperature
Noise Level	≤ 75 dB(A) at 1500 rpm and rated pressure
Application Range	Construction machinery, agricultural equipment, industrial hydraulics, mobile machinery

Applications

Applications

The PGP600 Series Heavy‑Duty Tandem Gear Pump delivers efficient and reliable hydraulic performance for industrial and mobile hydraulic systems requiring stable oil flow, durable construction, and compact installation:

Construction Machinery: Suitable for loaders, excavators, cranes, and road construction equipment, supplying dependable hydraulic power for working systems and steering control.
Agricultural Equipment: Widely used in tractors, harvesters, and farming machinery for lifting, steering, and auxiliary hydraulic functions.
Industrial Hydraulic Systems: Applied in hydraulic presses, machine tools, and automated production equipment requiring continuous and smooth hydraulic flow.
Material Handling Equipment: Ideal for forklifts, stackers, and lifting platforms operating under varying load conditions.
Mobile Hydraulic Vehicles: Installed in dump trucks, sanitation vehicles, and utility service trucks to support tipping and auxiliary hydraulic systems.
Hydraulic Power Units: Suitable for compact hydraulic stations and hydraulic power packs where low noise, reliability, and long‑lasting hydraulic performance are important.

Factory&FAQ

Packaging & Delivery

CBF-E Series Hydraulic Gear Pump-transportation

PGP600 Series Hydraulic Gear 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.

PGP900 Series Heavy‑Duty Tandem Gear Pump FAQ:

1. What is the PGP900Series Heavy‑Duty Tandem Gear Pump?

The PGP900 Series Heavy‑Duty Tandem Gear Pump is a high‑pressure, cast iron external gear pump platform from Parker Hannifin, designed for the most demanding mobile and industrial hydraulic applications. It is an upgraded and larger‑capacity successor to the PGP900 series, built to deliver reliable performance under extreme pressure and continuous‑duty cycles.

2. What makes the PGP900 Series different from standard gear pumps?

Superior Efficient Hydraulic Output: The PGP900 Series features precision-engineered gear geometry and pressure-balanced components, delivering far smoother, more stable oil delivery and higher volumetric efficiency than standard gear pumps, even under continuous high-pressure loads.
Heavy‑Duty Compact & Durable Design: Built with a high-strength cast iron housing and reinforced internal structures, it is purpose-built for long-term, reliable operation in harsh construction and mining environments where standard pumps often fail prematurely.
Optimized Low Noise Performance: Refined gear tooth profiles and precision-machined internal parts significantly reduce vibration and operating noise, making it quieter and more stable than conventional gear pumps during operation.
Enhanced Pressure & Load Capability: Unlike standard gear pumps, the PGP900 Series is rated for much higher continuous and peak pressures, with robust materials and sealing systems that withstand extreme shock loads and pressure spikes common in heavy machinery.
Tandem‑Ready Versatility: It supports flexible tandem/multi-stage configurations to power multiple independent hydraulic circuits, a feature not typically found in basic single-section standard gear pumps.

3. What is the working pressure range of PGP900 Series pumps?

The PGP900 Series is designed for high‑pressure heavy‑duty hydraulic systems:

Continuous Pressure: Up to 27.6 MPa (≈ 4000 PSI).
Maximum Peak Pressure: Up to 31.0 MPa (≈ 4500 PSI).

It is widely used in heavy construction machinery, mining equipment, and industrial hydraulic systems requiring reliable high‑pressure performance.

4. Can PGP900 Series pumps replace other brands?

Yes, the PGP900 Series can replace many standard heavy‑duty hydraulic gear pumps, including:

Parker Gear Pumps
Rexroth Gear Pumps
Commercial Hydraulic Gear Pumps
Other SAE‑standard heavy‑duty gear pumps

Please verify mounting dimensions, shaft type, displacement, and pressure ratings before replacement.

5. What hydraulic oil is recommended for PGP900 Series pumps?

For stable performance and long service life:

Oil Type: Anti‑wear hydraulic oil (AW type) or equivalent high‑performance hydraulic fluids.
Viscosity: ISO VG32–VG68 is recommended, with ISO VG46–VG68 preferred for heavy‑duty and high‑temperature applications.
Filtration: Clean hydraulic oil with a recommended 10 µm absolute filtration level helps reduce wear and improve pump durability.

6. What is the typical speed range of PGP900 Series pumps?

The PGP600 Series supports flexible operating conditions:

Minimum Speed: 600 RPM
Recommended Speed: 800–2200 RPM
Maximum Speed: Up to 2800 RPM depending on operating conditions and displacement.

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

PGP600 Series Hydraulic Gear 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.

PGP600 Heavy Duty Cast Iron External Gear Pump