Gear Pump
A gear pump is a positive displacement (PD) pump that transfers fluid mechanically, using meshing gears to continuously envelop a fixed volume of fluid to achieve fluid pumping. Gear pumps provide smooth, pulsation-free flow, which is proportional to the speed of the gears.
The core structure of a gear pump consists of two main gears: a driving gear (usually powered by an electric motor or engine) and a driven gear (rotating with the driving gear). The two gears form a sealed cavity through precise meshing. After the liquid is sucked into the pump body, due to the rotation of the gears, the liquid is drawn into the inlet of the pump body and pushed to the outlet, thereby achieving liquid delivery.
Poocca Gear Pump Manufacturer has 20+ years of hydraulic experience and is trustworthy. We provide you with gear pumps from brands such as Rexroth, Parker, Shimadzu, Marzocchi, Casappa, Sunny, etc. to meet your equipment needs. Please send us your requirements and we will have professional personnel contact you.
Poocca hydraulic manufacturer
POOCCA Hydraulic Manufacturing is a powerful enterprise in the hydraulic industry that integrates research, design, production, sales and technical services. Our product range includes gear pumps, plunger pumps, vane pumps, motors, hydraulic valves, cylinders and components designed for industries such as forklifts, excavators, dump trucks, power plant equipment and steel mills. As a leading hydraulic supplier, we focus on providing ODM and OEM hydraulic solutions to meet the unique needs of each customer.
POOCCA has more than 20 years of experience in the hydraulic industry, and its main goal is to produce high-quality, economical hydraulic pumps to save energy and reduce equipment costs. We guarantee product quality through extensive pre-factory testing, with an efficiency of 99.9%, and strictly abide by industry standards such as CE, ROHS and ISO.
We have more than 2,000 different hydraulic products to meet the needs of various industries such as construction, agriculture and mining. Our annual export volume exceeds US$16 million and we have established long-term partnerships with dealers in more than 75 countries around the world.
POOCCA Hydraulics, sincerely invite strategic partners to join us as dealers. In the ever-evolving hydraulic market, we strive to create more opportunities for mutual success.




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Why choose Poocca Hydraulic Gear Pump Manufacturer?
When choosing a hydraulic gear pump manufacturer, Poocca Hydraulic Gear Pump has the following advantages
and can be your first choice:
High Quality Standards
Poocca Hydraulic Manufacturer is committed to providing high-quality hydraulic gear pumps. Our products meet international standards and undergo strict quality control processes to ensure precision and reliability in every link from design to production. We use high-quality materials and advanced manufacturing processes to ensure that each gear pump has high-efficiency performance and long-term durability.
Innovative Design
Our gear pumps use the latest design technology and innovative solutions to improve efficiency and performance. Through continuous research and development and technological innovation, we ensure that our products have superior volumetric efficiency, low noise and long service life. The Poocca design team continues to explore and apply cutting-edge technologies to meet the ever-changing market needs.
Customized Service
Providing flexible customization services, the specifications and performance of the gear pump can be adjusted according to your specific requirements. Whether it is special size, pressure requirements or application environment, we can provide tailor-made solutions.
High Cost Performance
We return these advantages to you by optimizing production processes and supply chain management to reduce production costs. We strive to provide competitive prices while maintaining high quality.
Strong Production Capacity
Our production facilities are equipped with advanced equipment and technology, capable of large-scale and efficient production of hydraulic gear pumps. Whether it is small batch or large-scale production, we can deliver on time.
Strict Environmental Standards
Poocca pays attention to environmental protection, and our production process follows strict environmental standards to reduce the impact on the environment. We are committed to achieving sustainable development and actively adopt environmentally friendly materials and processes in product design and production.
Gear pump product types
Poocca hydraulic manufacturer's gear pumps are mainly divided into external gear pumps and internal gear pumps.

The external gear pump consists of two external gears that mesh with each other. The liquid is drawn into the pump from the inlet through the rotation of the gears and the liquid is delivered to the outlet through extrusion.
Poocca provides external gear pumps from brands such as Rexroth Marozcchi Shimadzu Parker Salami Hydromax.
The internal gear pump consists of an internal gear and an external gear. The internal gear rotates in the pump body and meshes with the external gear to form a fluid delivery cavity. The liquid is pushed from the inlet to the outlet through the rotation of the gears.
We mainly sell Rexroth PGH PFG gear pumps, Sunny HG gear pumps, Eckerle EIPC IPH QT EIPS internal gear pumps. For more details, please contact the manufacturer in Poocca.

Gear pump structure
The internal structure of a hydraulic gear pump usually includes the following main components, which work together to achieve the pumping function of the fluid:
1. Gear
Drive gear: driven to rotate by an external power source (such as an electric motor or engine), usually the input gear of the pump.
Driven gear: meshes with the drive gear and rotates with it, transporting the fluid from the inlet to the outlet of the pump.
2. Pump body
Pump casing: provides support and fixation for the gears, forming the outer shell of the pump. The pump body is usually cast or machined, and has sufficient strength to withstand the pressure of the liquid.
Pump cover: closes one end of the pump body, usually contains the inlet and outlet ports, and helps to seal the internal fluid.
3. End cover
Front cover: located at the front end of the gear pump, usually contains the inlet port of the liquid.
Rear cover: located at the rear end of the gear pump, usually contains the outlet port of the liquid. The end cover ensures the seal between the gear and the pump body and prevents leakage.
4. Shaft
Drive shaft: transmits external power to the gear to rotate the gear. Usually connected to the drive gear.
Driven shaft: connected to the driven gear, helps to rotate the driven gear and realize the transmission of the liquid.
5. Bearings
Support bearings: support the shaft of the gear, reduce friction, and ensure smooth rotation of the gear. Usually installed in the pump body or on the end cover.
6. Sealing device
Shaft seal: prevents liquid from leaking from the inside of the pump body to the outside and maintains the sealing of the system. Usually installed at the inlet and outlet ends of the pump.
O-ring: used to seal the joint between the pump body and the end cover to prevent liquid leakage.
7. Flow control device
Overflow valve: used to control the output pressure of the pump, prevent system overpressure, and protect the safety of the pump and hydraulic system.
Regulating valve: adjust and control the pressure output of the pump to ensure that the system operates within a stable pressure range.
8. Exhaust device
Exhaust hole: used to remove gas or air inside the pump to ensure the normal operation and performance of the pump.
9. Filter screen
Liquid inlet filter: installed at the liquid inlet, filter impurities in the liquid, and protect the internal components of the gear pump from wear and damage.
10. Adjustment device
Flow adjustment device: used to adjust the flow output of the pump to meet different operating requirements.




Hydraulic gear pump production process
The production process of Poocca hydraulic gear pump can be summarized into the following main steps:
1. Design
Requirement analysis: determine the application requirements, pressure and flow requirements of the pump.
Design: create detailed design drawings and 3D models.
Verification: perform design calculations and prototype testing to optimize the design.
2. Material preparation
Procurement: select and purchase the required raw materials.
Processing: cut and heat treat the materials in preparation for production.
3. Component processing
Precision processing: use mechanical equipment to process individual components (such as gears, pump bodies, end covers).
Surface treatment: polish and coat to improve durability.
4. Component assembly
Cleaning and inspection: ensure that all parts are clean and meet specifications.
Assembly: install gears, bearings, seals, and complete the assembly of the pump.
5. Testing and debugging
Functional testing: perform pressure and flow tests to verify performance.
Debugging: adjust the performance parameters of the pump based on the test results.
6. Quality control
Inspection: perform appearance, size and function inspections on the pump.
Record: record test data and generate quality reports.
7. Packaging and delivery
Packaging: Protective packaging of the pump and marking of product information.
Delivery: Arrange logistics to ensure timely delivery of products.
These steps ensure the high performance and reliability of the hydraulic gear pump, and every link from design to delivery is carefully controlled. Poocca guarantees that the gear pumps you receive are functional and high quality.


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Gear pump product material
The material selection of hydraulic gear pump is very important. Different materials have different physical properties and application ranges. Poocca gear pump manufacturer's materials.

Aluminum gear pump
Lightweight: Aluminum alloy has a low density, which makes the overall weight of the gear pump lighter, helping to reduce the burden on the equipment.
Good thermal conductivity: Aluminum alloy has good thermal conductivity and helps to dissipate heat.
Cast iron gear pump
High strength: Cast iron has high compressive strength and wear resistance, suitable for high-load and high-pressure working environments.
Good processing performance: Easy to process and form, suitable for large-scale production.

Gear pump precautions
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Regular inspection and maintenance
Check the oil level, oil quality and seals of the hydraulic gear pump regularly to ensure its normal operation and prevent failure. Keep the hydraulic system clean and replace the hydraulic oil regularly.
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Avoid overload and high temperature
Avoid overload and high temperature: Ensure that the working pressure and flow of the gear pump are within the rated range and avoid overload operation. Monitor the system temperature to prevent overheating to extend the service life of the pump.
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Prevent liquid contamination
Ensure that the hydraulic oil and the system are clean, and avoid dust, impurities and moisture from entering the system to prevent damage to the gear pump.
How to cooperate with Poocca
One-stop shopping for hydraulic pump, motor and valve
Gear Pump Model
We kindly ask you to provide the model of the gear pump, and if you have a photo of the pump, please send it to us.
Product Adjustment
If you have any requirements such as oil port direction, please let us know, and we will adjust it according to your requirements.

About Size
We will further check the parameters of the gear pump according to your model requirements
Other Information
In addition to the product information, please also send the required quantity, delivery address and other information to Poocca, and we will calculate the preferential price for you.
Hydraulic gear pump advantages
1. High efficiency
Volumetric efficiency: Gear pumps have high volumetric efficiency and can fully utilize the input mechanical energy to convert into kinetic energy of the liquid. Its flow output is stable and proportional to the speed.
Reliability: The structure is sturdy, can operate stably under high pressure, and has a long service life.
2. Easy maintenance
Easy to disassemble and repair: Due to its simple structure, the maintenance and repair of gear pumps are relatively easy. Regular inspection and maintenance can extend the service life of the pump.
Low failure rate: Fewer moving parts reduce its failure rate and maintenance costs.
3. Smooth flow output
Low pulsation: Gear pumps can provide smooth and pulsation-free flow output, suitable for application scenarios with high requirements for flow stability.
High flow consistency: The flow of gear pumps is directly related to the speed, and can provide consistent flow output to ensure stable operation of the system.
4. High durability
Wear resistance: Gear pumps are made of high-strength materials, can withstand high wear, and are suitable for harsh working environments.
High pressure resistance: The design can withstand high pressure to ensure stable operation under high load.
5. Flexible flow adjustment
Adjustable flow: Some gear pumps provide adjustable flow function, which can adjust the flow according to actual needs and provide greater flexibility.
6. Suitable for harsh environments
Pollution resistance: Gear pumps can handle liquids containing impurities and are suitable for occasions with harsh working environments.

FAQ
Q: How do I know if my hydraulic gear pump is bad?
Q: What are the 4 types of hydraulic pumps?
Q: What are the disadvantages of hydraulic gear pump?
Q: Will a gear pump pump water?
Q: What is the life of a hydraulic gear pump?
Q: What is the difference between a gear pump and a gear motor?
Q: What is the maximum pressure for a gear pump?
Q: What are the symptoms of a bad hydraulic gear pump?
Q: What is the difference between a vane pump and a gear pump?
Q: What are the cons of gear pumps?
Q: How does a hydraulic external gear pump work?
Q: Why can't a gear pump handle water?


















