Yuken PV2R1-23-F-RAA-4326 Hydraulic Vane Pump | PV2R Series Low Noise Pump

The PV2R1-23-F-RAA-4326 high-pressure vane pump from Chengyuan Hydraulic is a high-performance power unit fully compatible with Yuken engineering standards. Specifically designed for industrial environments where ultra-low noise and long service life are paramount, this pump utilizes internal balance technology to neutralize radial loads. For the PV2R1-23 model, we employ precision grinding on the stator’s internal cam profile to ensure the centripetal force of the vanes is perfectly balanced with the back pressure. Every pump undergoes 100% simulated full-load condition testing to verify that volumetric efficiency exceeds 95% under high-pressure continuous operation, ensuring 100% original-place interchangeability.

Technical Specifications :

• Model Number: PV2R1-23-F-RAA-4326

• Displacement: 23.1 cm³/rev

• Rated Operating Pressure: 21 MPa (210 bar)

• Max Operating Pressure: 21 MPa (Continuous)

• Maximum Speed: 1800 r/min

• Minimum Speed: 750 r/min

• Mounting Type: F (Flange Mount)

• Rotation: R (Clockwise, viewed from shaft end)

• Discharge Port Position: A (Upwards – Standard)

• Suction Port Position: A (Right Horizontal – Standard)

• Approximate Weight: 9.0 kg

Key Technical Advantages:

• Ultra-Low Noise Technology: The PV2R1 series features a 12-vane structure optimized via fluid dynamics. By precision-calculating the transition segments of the stator cam, we effectively reduce discharge pulsation and structural vibration caused by pressure fluctuations. Noise levels are significantly lower than equivalent gear or piston pumps.

• Side Plate Pressure Compensation: The valve-distributing side plates utilize an automatic pressure compensation design. As system pressure increases, the side plates micro-adjust their clearance with the rotor faces, minimizing internal leakage and preventing seizure under high-pressure loads.

• Vacuum Heat-Treated Materials: Vanes and stators are crafted from high-alloy tool steel and undergo vacuum heat treatment to reach a hardness of HRC 62+. This ensures the matching surfaces maintain their original geometry during high-speed friction, extending the mean time between maintenance (MTBM).

• Versatile Media Compatibility: The optimized sealing chamber supports standard mineral oils and can be adapted for fire-resistant fluids (like water glycol) with specialized seals, making it ideal for high-heat environments like die-casting and forging.

Application Areas:

• Plastics Machinery: Primary pump for clamping and injection in molding machines.

• Machine Tools: Clamping mechanisms for CNC lathes and hydraulic drives for grinding machines.

• Die-Casting & Forging: Power units for small presses and automated industrial production lines.

Expert Maintenance Tips:

• Initial Priming: After installation, the pump must be filled with hydraulic oil before the first start. Use “inching” (intermittent starting) at low pressure to bleed air. Operating with air inside can cause cavitation and lead to vane breakage.

• Inlet Vacuum Control: Vane pumps rely on centrifugal force and suction to extend the vanes; therefore, inlet vacuum should not exceed -0.02 MPa. Regularly check the inlet filter to prevent noise caused by cavitation.

• Shaft Alignment: When using a coupling, the coaxial deviation must be within 0.1mm. Misalignment leads to uneven bearing wear and premature shaft seal failure.