Eaton 3323/4623/5423 Hydraulic Charge Pump Overview

The Eaton 3323 / 4623 / 5423 Hydraulic Charge Pump series is designed to deliver reliable and stable charge pressure for closed-loop hydrostatic transmission systems. Engineered with precision and durability, these charge pumps play a vital role in maintaining system efficiency, preventing cavitation, and ensuring continuous oil circulation.

Widely used in heavy-duty mobile machinery, this series offers excellent performance, long service life, and strong adaptability to demanding working environments.

Core Features & Advantages

• Low Noise & High Efficiency：Optimized gear design ensures smooth operation, low noise, and high volumetric efficiency.

•  Improve Main Pump Stability：Provides stable charge oil flow to maintain proper lubrication and cooling of the main pump.

• Extend Hydraulic System Service Life：Reliable charge oil supply reduces wear and helps extend the lifespan of the hydraulic system.

• Multiple Control Options：Compatible with different hydraulic control systems to meet various application requirements.

Eaton 3323/4623/5423 Hydraulic Charge Pump Circuit

The Eaton 3323 / 4623 / 5423 Hydraulic Charge Pump Circuit is a critical subsystem in closed-loop hydrostatic transmission systems. It is responsible for maintaining stable charge pressure, ensuring continuous oil replenishment, and supporting cooling and filtration, thereby enhancing the efficiency and durability of the entire hydraulic system.

Specifications

Applications

1. Hydraulic drives with high pressure, heavy load, variability, large displacement, long service life, and reliability.

2. Steel metallurgy and forging machinery

3. Ceramic and refractory material presses

4. Shipping and hydroelectric systems

5. Rubber vulcanization and paper production

6. Petroleum equipment

7. Construction and mobile machinery

8. Railway and tunneling machines

Packaging & Delivery

Charge 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.

Eaton 3323/4623/5423 Hydraulic Charge Pump FAQ

1. What is the function of the Eaton 3323 / 4623 / 5423 charge pump?

It supplies low-pressure oil to the closed-loop system, maintains charge pressure, and compensates for internal leakage.

2. What type of pump is the Eaton 3323 / 4623 / 5423?

It is typically a gear-type hydraulic charge pump with stable and reliable performance.

3. Where are these charge pumps commonly used?

They are widely used in excavators, loaders, agricultural machinery, and hydrostatic transmission systems.

4. What is the difference between models 3323, 4623, and 5423?

The main differences are displacement and flow capacity, allowing them to meet different system requirements.

5. Why is charge pressure important?

Charge pressure prevents cavitation, ensures lubrication, and maintains stable system operation.

6. What are common signs of charge pump failure?

Low pressure, abnormal noise, overheating, and reduced machine performance.

7. Can these pumps be replaced with aftermarket alternatives?

Yes, as long as the replacement matches the original specifications in size, pressure, and mounting.

8. How to maintain the Eaton hydraulic charge pump?

Use clean hydraulic oil, replace filters regularly, and inspect seals and internal components.

Certifications & Quality Assurance

Charge 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.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%).

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.

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

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.

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.