Fixed displacement vane pump Yuken PV2R1-31-F-RAA-4222

The PV2R1-31-F-RAA-4222 pump from the Yuken PV2R series is a fixed displacement vane pump. The series is known for low noise and stable running at high pressure, and is very common on machine tools, presses and injection machines.

Key specifications of PV2R1-31-F-RAA-4222

• Displacement: 31 cc/rev
• Maximum pressure: 210 bar
• Displacement type: Fixed

These values come from the manufacturer's published data. The full list is in the specifications tab.

Applications

• Machine tools
• Hydraulic presses
• Plastic injection machines
• Industrial power units

How it works

In a vane pump, sliding vanes in the rotor slots are pressed against a cam ring by centrifugal force and oil pressure. As the rotor turns, the volume between the vanes grows and shrinks, carrying oil from suction to outlet. Smooth flow and low noise make this pump a good fit for industrial machinery.

Reading the code

About the brand

Yuken is a Japanese maker of hydraulic pumps and valves, widely found on machine tools, presses and injection moulding machines.

Selection and maintenance

The vane cartridge is sensitive to oil cleanliness, so keep filtration and oil viscosity as the maker specifies. A whining noise usually means cavitation or air entering through the suction line. On many vane pumps the cartridge can be replaced instead of the whole pump; this has to be checked for each model.

If this unit is already in service and has a fault, see hydraulic pump repair.

FAQ