How Do Hydraulic Gear Pumps Work?

For hydraulic systems, hydraulic gear pumps are an essential component in both industrial and mobile units. They play a crucial role in transforming mechanical power into hydraulic power, which is used to perform various tasks, such as lifting heavy loads or powering machinery.

At BSP Hydraulics, we understand the inner workings of hydraulic gear pumps, and this article will explore their operation and the key factors that make them indispensable in hydraulic systems.

What are Hydraulic Gear Pumps?

Hydraulic gear pumps belong to the positive displacement pump group, which means they move a fixed amount of fluid with each rotation of the pump’s gears. This reliable and efficient design makes them suitable for a range of applications, from heavy machinery in construction to precision equipment in manufacturing.

Here’s a step-by-step breakdown of how hydraulic gear pumps work:

Inlet Port

Hydraulic gear pumps have two main ports – an inlet port and an outlet port. The inlet port is connected to the hydraulic reservoir, while the outlet port is connected to the hydraulic system where the pressurised fluid is needed.

Gears

The heart of the hydraulic gear pump consists of two meshing gears – a driving gear (typically connected to the input shaft) and a driven gear (connected to the output shaft). These gears are precisely machined to mesh with minimal clearance.

Fluid Intake

When the pump is in operation, the rotation of the driving gear creates a low-pressure area at the inlet port. This low-pressure region causes hydraulic fluid from the reservoir to be drawn into the space between the gear teeth.

Fluid Trapping

As the gears continue to rotate, the fluid is trapped between the gear teeth and carried around the outside of the gears. The volume between the gear teeth gradually decreases as they mesh, causing the fluid to be squeezed.

Fluid Discharge

As the fluid is compressed between the gear teeth, it is forced out of the meshing area and into the outlet port. The outlet port is connected to the hydraulic system, where the pressurised fluid can be used to perform work, such as lifting a load or moving machinery.

Continual Flow

This process of fluid intake, trapping, and discharge is continuous if the pump is in operation. The meshing gears ensure a consistent flow of hydraulic fluid, making hydraulic gear pumps ideal for applications where a steady and predictable flow of pressurised fluid is required.

What are the Advantages of Hydraulic Gear Pumps?

Hydraulic gear pumps offer several advantages that make them a popular choice in various hydraulic systems:

Compact Design

Hydraulic gear pumps are relatively small and compact, making them suitable for installations in tight spaces.

Efficiency

They are known for their high volumetric efficiency, meaning they can move a significant fluid volume per rotation, resulting in effective power transfer.

Cost-Effective

Hydraulic gear pumps are cost-effective to manufacture and maintain, making them a budget-friendly option for many applications.

Reliability

Their simple design and robust construction make hydraulic gear pumps reliable and less prone to failure.

Why Choose BSP Hydraulics?

Hydraulic gear pumps straightforward design and dependable operation have made them a staple in industries that rely on hydraulic technology. Whether it’s lifting heavy loads, powering construction equipment, or operating precision machinery, hydraulic gear pumps play a crucial role in keeping the wheels of industry turning smoothly.

BSP Hydraulics understands the necessity of reliable hydraulic systems, and we offer an extensive range of products.

These products include:

• Hydraulic Pumps & Motors
• Hydraulic Hose & Fittings
• Hydraulic Tanks
• Hydraulic Valves
• Hydraulic Cylinders

We also offer a full comprehensive in-house hydraulic repair service for all hydraulic systems and components.

For more information on BSP Hydraulics’ products and services, please contact us today and speak to a member of our team.