Hydraulic Pump

Your Professional Hydraulic Pump Supplier

Our goal is to become your true partner in the field of hydraulic pump in China. Fujian Okairui Fluid Technology Co., Ltd. (hereinafter referred to as Okairui), founded in 2013, the core members of the company have rich experience in technology, management and entrepreneurship. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

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Why Choose Us

Product application

Our products include hydraulic pumps, hydraulic motors, hydraulic valves and hydraulic systems, which are widely used in construction machinery, agricultural machinery, marine equipment, offshore applications and other industries.

Our customization

Our products are the ideal choice for various industries, and we can also customize them according to the specific needs of customers for different applications.

Our services

In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Advantages of Hydraulic Pump

High power density and efficiency: Hydraulic pumps are renowned for their high power density, meaning they can generate a large amount of power relative to their size. This is particularly beneficial in applications where space is at a premium. In terms of efficiency, these pumps typically offer efficiencies between 70% and 95%, depending on the type and application.

Precision and control in operation: Precision and control are hallmark features of hydraulic pumps. They allow for fine control over movement and speed, which is critical in applications such as precision machinery and aerospace.

Durability and reliability: Durability and reliability are key advantages of hydraulic pumps. They are designed to withstand harsh environments and operate reliably for extended periods. A typical hydraulic pump has a lifespan of 10,000 to 20,000 hours under normal operating conditions.

Types of Hydraulic Pump

Piston pumps

A piston pump is a positive displacement device. In these pumps, there is a high-pressure seal that combines with a driving piston to move liquids and gasses. One of the main advantages of piston pumps is that they are incredibly versatile and can operate well under various pressure settings.

Axial piston pumps

An axial piston hydraulic pump is a type of positive displacement pump. They have cylinders assembled around a central axis (cylinder block). Within each cylinder are pistons attached to a swashplate or wobble plate.

Radial piston pumps

As its name suggests, in a radial piston pump, the pistons are arranged along the radius of the cylindrical block, which includes the pintle and rotor. The rotor powers the pistons through the cylinders and forces hydraulic fluid in and out of the cylinder.

Vane pumps

A vane pump is a positive displacement pump designed to provide the same amount of flow even as the pressure changes. This pump type usually has a maximum rotational force of 900 rotations per minute.

Gear pumps

Gear pumps have become the most common hydraulic pump type used in industrial applications today. The gear pump has fewer moving parts than piston or vane pumps, which makes it easy to service and relatively inexpensive compared to other hydraulic pumps.

Clutch pumps

A clutch pump uses a belt from a crankshaft pulley to drive itself. When a clutch pedal is engaged, the flywheel moves with a pressure plate to disengage the clutch disc and prevent the driveshaft from turning.

Specification of Hydraulic Pump

Max Pressure	5000 PSI / 350 bar / 35 MPa
Materials	Anodized Aluminum, Brass, Polysulfone, Stainless Steel
Seal Materials	Buna-N,Teflon
Outlet Port	Male Quick-test
Pressure Media	Liquid
Min Operating Temperature	-29 °F / -34 °C
Max Operating Temperature	140 °F / 60 °C
Fine Adjustment Resolution	0.01 psi / 70 Pa
Media Compatibility	Alcohol, Antifreeze, Ethylene Glycol, Hydraulic Oil, Light motor oil, Mineral Oil, Petroleum Based Oil, Ralston Calibration Oil, Transmission fluid, Water, Windshield washer fluid
Reservoir Volume	4.2 fl. oz
Length	5.7 in / 15 cm
Width	6 in / 16 cm
Height	10.6 in / 27 cm

Application of Hydraulic Pump

Manufacturing sector: Hydraulic pumps are extensively used in the manufacturing sector for machinery like presses, conveyors, and automated production lines. They provide the necessary power to handle heavy loads, offering precise control and high efficiency.

Construction equipment: In construction, hydraulic pumps are integral to equipment such as cranes, excavators, and bulldozers. Their ability to handle heavy loads and provide steady power makes them ideal for these applications.

Mining and quarrying: Hydraulic pumps are used in mining equipment like drills and earth movers. The rugged nature of these pumps allows them to withstand the harsh conditions typically found in mining environments.

Tipper trailers: Hydraulic pumps are crucial in the operation of tipper trailers, used for transporting and unloading heavy materials. They offer high power density, making them efficient for lifting heavy loads.

Two-post auto hoists: In automotive repair shops, two-post auto hoists rely on hydraulic pumps for lifting vehicles. These pumps provide the strength and stability required to safely lift and hold vehicles for maintenance.

Forklifts: For material handling, forklifts use hydraulic pumps to lift and move heavy objects. The pumps in forklifts are designed for high efficiency and durability, ensuring reliable operation over long periods.

Parts of a Hydraulic Pump

Pump housing/casing: This is the exterior part of the hydraulic pump to protect the inner components. Smaller pumps use aluminum as the construction material and others use cast iron.

Impeller blades: The impeller blades will rotate inside the pump housing. The rotation of impeller blades will rotate the surrounding fluids and thus the fluid flow at a higher potential. Also, they play an important role in lubricating and cooling the system.

Pump shaft

The pump shaft is used to mount the impeller. Steel or stainless steel is used for constructing the shaft and the size will depend on the impeller.

Bearing assembly

Assistance for continuous impeller rotation is the function of pump bearings. Most of the centrifugal pump uses standard ball-type anti-friction bearings.

Sealings

Most of the pumps fail due to the damage of bearing assemblies. Seals will eliminate the risk of failure to a greater extent by protecting the bearing assemblies from contaminants and coolants.

Installation Requirements of Hydraulic Pump

When installing, it is required that the motor and the shaft of the hydraulic pump should have a high concentricity, and the deviation should be below 0.1 m, and the inclination Angle should not be greater than 1 degree to avoid increasing the additional load on the pump shaft and causing noise. When it is necessary to use a belt or gear drive, the hydraulic pump should be removed from the radial and axial load. Hydraulic motors are similar to pumps in that some motors are allowed to bear a certain radial or axial load, but should not exceed the specified allowable value.

Packing and Shipping of Hydraulic Pump

Packing	Wooden box
Shipping	Shipped by road, sea, rail

FAQ

Q: What is the typical power density of hydraulic pumps?

A: Hydraulic pumps have high power density, often generating large power relative to their size, making them suitable for heavy-duty applications.

Q: How does the efficiency of hydraulic pumps compare to electric pumps?

A: Hydraulic pumps generally have an efficiency of 70-95%, while electric pumps can reach up to 90-95%. The specific efficiency depends on the pump type and application.

Q: What are the common maintenance requirements for hydraulic pumps?

A: Maintenance often involves replacing seals, gaskets, and filters. Regular checks for fluid levels and potential leaks are also necessary.

Q: What is the expected lifespan of a hydraulic pump?

A: A typical hydraulic pump has a lifespan of 10,000 to 20,000 hours under normal operating conditions.

Q: How do hydraulic pumps impact the environment?

A: The main environmental concerns include potential fluid leaks and noise pollution. However, advancements are being made in eco-friendly hydraulic fluids and noise reduction.

Q: What are the costs associated with hydraulic pumps compared to pneumatic pumps?

A: Hydraulic pumps generally have higher initial and maintenance costs than pneumatic pumps, but offer greater power and efficiency.

Q: How do modern hydraulic pumps achieve enhanced efficiency?

A: Innovations like variable displacement pumps and smart control systems are key in improving efficiency, reducing energy consumption by up to 30%.

Q: What are the noise levels associated with hydraulic pumps?

A: Hydraulic pumps can generate noise levels up to 70-90 decibels, comparable to busy street noise, but newer designs are focusing on reducing these levels.

As one of the leading hydraulic pump manufacturers and suppliers in China, we warmly welcome you to wholesale hydraulic pump for sale here from our factory. All our products are with high quality and competitive price.

Internal gear pump, parker cylinder