YUKEN PV2R Series Single Vane Pump: Comprehensive Overview
Product Introduction
The
YUKEN PV2R series single vane pump is a fixed displacement hydraulic vane pump developed by Yuken (Japan's leading hydraulic manufacturer) specifically for
low-noise operation while delivering high-pressure performance. This series has become a mainstay in various industrial applications due to its reliability, efficiency, and easy maintenance design.
Core Features
1. Low Noise Performance
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High-order equation stator curve design: Minimizes pressure and flow pulsation, reducing vibration and noise (≤72dB(A) for most models)
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Arc-shaped vane structure: Optimizes fluid transition during operation
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Smooth internal flow path: Reduces turbulence and operational noise
2. High Pressure & Efficiency
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Maximum operating pressure: Up to 21 MPa (3,050 psi) for petroleum-based oils
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Volumetric efficiency: ≥92% (ensures stable oil supply and minimizes energy loss)
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Durable construction: Withstands high pressure cycles and maintains performance over time
3. Easy Maintenance
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Cartridge kit design: Main internal components are assembled as a replaceable cartridge
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Simplified replacement: Internal parts can be easily changed without disassembling the entire pump housing
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Reduced downtime: Maintenance can be completed quickly, minimizing production interruptions
4. Wide Application Range
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Displacement range: 5.8 to 237 cm³/rev (covers small to large flow requirements)
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Multiple mounting options: Flange (F) or foot (L) mounting configurations
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Flexible port arrangements: Standard AA (both ports on top) or other custom options
Model Number Explanation (Examples: PV2R2-33-F-RAA-43 & PV2R4-136FRAA)
The model PV2R4-136FRAA is a typical single vane pump of the PV2R4 series, with each code corresponding to specific product characteristics, which is explained in detail below (combined with the series model rules):
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Code
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Meaning
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Explanation for PV2R4-136FRAA
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PV2R2/PV2R4
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Series designation (PV2R1/R2/R3/R4 for different size ranges)
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PV2R4: Large-size series, suitable for medium and high flow scenarios
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33/136
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Nominal displacement (≈33.3 cm³/rev)
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136: Nominal displacement is 136 cm³/rev
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F
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Mounting type (F=flange, L=foot)
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F: Flange mounting type, common in industrial equipment
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R
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Rotation direction (R=clockwise from shaft end, L=counterclockwise)
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R: Clockwise rotation from the shaft end (standard configuration)
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AA
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Port position (AA=both ports on top, other options available)
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AA: Both suction and discharge ports are on the top (standard)
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43
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Design number (identifies specific design version within the series)
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Omitted in PV2R4-136FRAA, default to standard design version
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Technical Specifications
Key Performance Parameters
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Parameter
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Value Range
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Notes
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Displacement Series
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PV2R1: 5.8-31 cm³/rev<br>PV2R2: 26-75 cm³/rev<br>PV2R3: 60-125 cm³/rev<br>PV2R4: 36-237 cm³/rev (including PV2R4-136: 136 cm³/rev)
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Covers wide flow requirements
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Max. Operating Pressure
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21 MPa (petroleum-based oils for small and medium series)<br>17.5 MPa (petroleum-based oils for PV2R4-136)<br>14 MPa (water-containing fluids)
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Varies by fluid type
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Speed Range
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700-1800 r/min
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Optimal range: 1200-1800 r/min
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Fluid Compatibility
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Petroleum-based oils (anti-wear/R&O type), water-containing fluids, synthetic fluids
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Check compatibility with specific fluids
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Temperature Range
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-10°C to 80°C
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Depending on fluid type
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Working Principle
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Motor drives the rotor to rotate within the stator housing
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Vanes, under centrifugal force and pressure oil action, maintain contact with the stator inner surface
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As the rotor turns, the working volume between two adjacent vanes, rotor, and stator changes:
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Increases during the suction phase (drawing in hydraulic oil)
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Decreases during the discharge phase (pushing out hydraulic oil)
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Each full rotation of the rotor completes two suction and two discharge cycles (due to the elliptical stator shape)
Application Fields
The YUKEN PV2R series single vane pump is widely used in:
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Injection molding machines: For clamping, injection, ejector, and mold adjustment circuits (PV2R4-136FRAA is suitable for small and medium-sized injection molding machines )
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Machine tools: CNC machines, grinders, lathes, and milling machines (PV2R4-136FRAA is applicable to light-duty machine tools )
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Die-casting machines: High-pressure applications requiring precise flow control
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Plastic machinery: Extruders, blow molding machines, and thermoforming equipment
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Hydraulic presses: For forming, stamping, and pressing operations
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Other industrial equipment: Material handling systems, packaging machinery, and automation lines
Installation & Maintenance Tips
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Mounting: Ensure proper alignment between pump and motor shaft (misalignment <0.1 mm)
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Fluid Selection: Use recommended viscosity grade (ISO VG 32-68) and clean hydraulic oil (NAS 1638 Class 8 or better)
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Suction Conditions: Maintain proper suction pressure (≥0.05 MPa) to prevent cavitation
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Regular Maintenance: Replace oil filter and hydraulic fluid per manufacturer recommendations
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Cartridge Replacement: Follow proper procedure to ensure correct installation of internal components
For detailed technical specifications, operation guidelines, and maintenance procedures of PV2R4-136FRAA and other models, refer to the official
YUKEN PV2R series catalog or contact YUKEN authorized distributors. The PV2R4-136FRAA adopts a cartridge kit design, which is easy to maintain, and its low-noise performance is suitable for equipment with high noise requirements.
Would you like a concise, ready-to-use technical summary of the PV2R series (key specs, model selection criteria, and common troubleshooting tips) that you can reference quickly?
