1. Pump Housing

The pump housing serves as the main body of the hydraulic variable vane pump, enclosing and supporting all internal components. It is typically made from durable materials such as cast iron or aluminum alloy to withstand pressure and ensure stability. The housing maintains proper alignment of the internal parts, minimizing vibration and leakage during operation.

2. Rotor and Vanes

At the heart of the pump lies the rotor and vane assembly, which is responsible for generating hydraulic flow. The rotor contains multiple slots that hold sliding vanes. As the rotor spins, the vanes move in and out, creating variable chambers that draw in and discharge fluid. The variable design allows adjustment of the pump’s output flow to meet different system requirements, improving energy efficiency.

3. Cam Ring

The cam ring surrounds the rotor and defines the pumping chamber’s shape. Its eccentric positioning determines the displacement and pressure characteristics of the pump. In a variable vane pump, the cam ring can shift slightly to alter the flow rate, enabling precise control over hydraulic output without affecting performance stability.

4. Control Mechanism and Sealing Components

The control mechanism regulates the cam ring’s position to adjust the output flow automatically based on system pressure. This ensures efficient operation and energy savings. Sealing components, including shaft seals and gaskets, prevent fluid leakage and maintain internal pressure balance.

https://www.dxvanepump.com/product/yb-series-medium-pressure-vane-pump/yb221-stable-reliable-double-pump-hydraulic-vane-pump-with-medium-and-low-pressure.html
YB2-21 double pump is specially designed for medium and low-pressure hydraulic systems, and its performance is in this range, which makes it suitable for various industrial applications.
YB2-21 adopts a duplex design, combining the output of two pumps to provide greater flow. This means that it can be used in scenarios that require more hydraulic output, such as hydraulic clamps, lifting platforms, and other industrial equipment.