Hydraulic Vane Pumps: Quiet, Efficient and Adaptable

Hydraulic vane pumps are known for their smooth operation, low noise levels, and high volumetric efficiency – especially in systems requiring continuous flow. These positive displacement pumps use sliding vanes to move fluid through an eccentric chamber, delivering consistent performance with minimal pulsation. The working pressure doesn’t tend to exceed 175 bar, however several pumps that have been designed specially may surpass pressures of 200 bar and reach up to 300 bar.

Available in both fixed and variable displacement configurations, vane pumps are ideal for low-viscosity fluids and high-speed applications where quiet operation and compact design are key.

How Do Hydraulic Vane Pumps Work?

Vane pumps operate using a rotor fitted with rectangular vanes that slide in and out of slots as the rotor spins inside an offset cavity. Here’s how they work:

• As the rotor turns, vanes extend outward and seal against the pump housing.
• This creates expanding chambers that draw fluid in through the inlet port.
• As the rotor continues, the chambers contract, pushing fluid out through the outlet port.
• The direction of flow can be reversed by changing the pump’s rotation.

Because the vanes maintain contact with the housing, the pump delivers a steady flow with minimal pressure ripple – even at relatively high speeds.

Fixed vs Variable Displacement Vane Pumps

Vane pumps are available in two main types:

• Fixed displacement: Delivers a constant volume of fluid per revolution – ideal for predictable flow rates.
• Variable displacement: Flow can be adjusted based on system demand – improving energy efficiency and control

Unlike gear pumps, vane pumps don’t require changing the prime mover speed to alter displacement, making them more flexible in dynamic hydraulic systems.

Are Vane Pumps Noisy?

Not at all – vane pumps are among the quietest hydraulic pump types. Their continuous flow design and smooth internal movement reduce vibration and mechanical noise, making them suitable for noise-sensitive environments.

Want to Learn More About Hydraulic Pumps?

If you’re comparing pump types or designing a new system, don’t miss our Hydraulic Pumps Ultimate Guide – covering: the different kinds of hydraulic pump, how they each work and more!

Whether you’re an experienced engineer or just getting started, this guide is packed with insights to help you make informed decisions.

Global Supply & Trusted Expertise

We supply hydraulic vane pumps from over 80 leading global brands – including Bosch Rexroth, Parker, Eaton Vickers, Hydac and more. With worldwide export, fast lead times and award-winning hydraulic expertise & customer service we’re trusted by small businesses to multinational operations across more than 20 industries!

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