PSVS37/90 Hydraulic Charge Pump Overview

The PSVS37/90 Hydraulic Charge Pump is a high-efficiency auxiliary gear pump designed to support main piston pumps in hydraulic systems. It is widely used in excavators and various construction machinery to ensure a stable supply of low-pressure oil for the main pump.

Core Features

• Stable Oil Supply
  Provides consistent low-pressure oil flow to ensure smooth operation of the main pump.

• Compact Structure
  Designed for easy integration with the main pump, saving installation space.

• High Durability
  Manufactured with high-strength materials for long service life in harsh environments.

• Low Noise & Smooth Operation
  Optimized gear design reduces vibration and operational noise.

• Excellent Interchangeability
  Can directly replace original pumps with matching specifications.

• Cost-Effective Solution
  Offers reliable performance at a competitive price.

Charge Pump Hydraulic Circuit

The charge pump hydraulic circuit is an essential part of many hydraulic systems, especially in piston pump applications such as excavators and heavy machinery. It is designed to provide a continuous supply of low-pressure hydraulic oil to support the main pump and maintain system stability.

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.

PSVS37/90 Hydraulic Charge Pump FAQ 

1. What is the main function of the PSVS37/90 charge pump?

The PSVS37/90 charge pump supplies stable low-pressure hydraulic oil to the main piston pump, ensuring proper lubrication, cooling, and preventing cavitation.

2. Which machines is the PSVS37/90 suitable for?

It is widely used in hydraulic excavators, construction machinery, and industrial hydraulic systems.

3. What type of pump is PSVS37/90?

It is an external gear pump known for its simple structure, high reliability, and stable performance.

4. What are the common signs of pump failure?

Signs include low system pressure, abnormal noise, overheating, and unstable machine operation.

5. Can it replace the original pump directly?

Yes, it is designed with standard dimensions and can be directly installed as a replacement without modification.

6. What is the typical working pressure range?

The rated pressure is usually between 2–5 MPa, depending on system requirements.

7. How to extend the service life of the pump?

Use clean hydraulic oil, maintain proper pressure, and perform regular maintenance and inspections.

8. Do you support customization?

Yes, customization options such as rotation direction, mounting type, and branding are available.

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.