Product Overview
The PV2R Series, manufactured by Yuken, is a renowned high-pressure fixed displacement vane pump family, specially developed for low-noise operation and widely used in injection molding machines, die-casting machines, hydraulic presses, machine tools, and various industrial hydraulic systems. The series encompasses four sub-series—PV2R1, PV2R2, PV2R3, and PV2R4—with displacement ranges covering 5.8 to 237 cm³/rev, meeting diverse requirements from small equipment to large hydraulic systems.
The PV2R Series features a high-order equation stator curve design, reducing noise by approximately 5–10 dB compared to traditional vane pumps. The main internal components employ a cartridge kit structure, facilitating easy maintenance and quick replacement. The series offers high pressure (up to 210 bar / 21 MPa) , high volumetric efficiency, low noise, and long service life.
Our products are manufactured to be 100% interchangeable with Yuken original specifications—a true “drop-in” replacement solution. Every unit undergoes 100% full-load and flow-matching testing under simulated operating conditions before shipment, ensuring volumetric efficiency, flow rate, and noise performance meet or exceed original specifications at rated pressure.
Technical Specifications
PV2R2-59-F-RLR-41
Product Type: Fixed Displacement Vane Pump
Brand: Yuken
Series: PV2R2
Geometric Displacement: 58.2 ml/r (3.55 in³/rev)
Rated Pressure: 16 MPa (160 bar)
Maximum Pressure: 21 MPa (210 bar)
Speed Range: 600 – 1800 r/min
Optimal Speed Range: 1200 – 1800 r/min
Mounting Type: F = Flange Mounting
Rotation: R = Clockwise (viewed from shaft end)
Seal Material: RLR configuration
Design Number: 41
Fluid Compatibility: Petroleum-based oils, anti-wear hydraulic oils, water-glycol
Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil
PV2R2-41RAF1
Product Type: Fixed Displacement Vane Pump
Brand: Yuken
Series: PV2R2
Geometric Displacement: 41.3 ml/r (2.52 in³/rev)
Rated Pressure: 16 MPa (160 bar)
Maximum Pressure: 21 MPa (210 bar)
Speed Range: 600 – 1800 r/min
Optimal Speed Range: 1200 – 1800 r/min
Mounting Type: F = Flange Mounting
Rotation: R = Clockwise (viewed from shaft end)
Seal Material: A = Standard NBR
Design Number: 41
Fluid Compatibility: Petroleum-based oils, anti-wear hydraulic oils, water-glycol
Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil
PV2R1-31-F-1-R-A
Product Type: Fixed Displacement Vane Pump
Brand: Yuken
Series: PV2R1
Geometric Displacement: 31.0 ml/r (1.892 in³/rev)
Rated Pressure: 16 MPa (160 bar)
Maximum Pressure: 21 MPa (210 bar)
Speed Range: 750 – 1800 r/min
Optimal Speed Range: 1200 – 1800 r/min
Mounting Type: F = Flange Mounting
Rotation: R = Clockwise (viewed from shaft end)
Shaft Type: 1 = Keyed Shaft
Port Position: A = Standard configuration
Design Number: 41
Weight (Flange Mount): Approx. 9.0 kg
Fluid Compatibility: Petroleum-based oils, anti-wear hydraulic oils, water-glycol
Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil
Key Technical Advantages
1. High-Order Equation Stator Curve – Ultra-Low Noise Operation
The PV2R Series employs a high-order equation stator curve design, effectively reducing impact and friction between vanes and the stator. Compared to traditional vane pumps, operating noise is reduced by approximately 5–10 dB. The 12-vane system further reduces flow pulsation amplitude, making the pump exceptionally suitable for confined spaces in industrial workplaces.
2. Cartridge Structure – Easy Maintenance
The PV2R Series features a cartridge kit structure, with all internal components assembled as an integral unit using screws. Pump cartridges can be replaced quickly without removing the entire pump from the system, dramatically reducing downtime.
3. High Pressure Capability in a Compact Envelope
The PV2R Series achieves operating pressures up to 210 bar (21 MPa) within a compact housing size. High-pressure capability allows the use of smaller actuators and lines, reducing overall system cost and installation footprint.
4. Wide Speed Range for Application Flexibility
The PV2R Series supports a wide speed range of 600–1800 r/min. The optimal operating speed range is 1200–1800 r/min. This wide speed range enables the series to adapt to diverse applications—from low-speed high-torque to high-speed light-load operations.
5. Broad Fluid Compatibility
The PV2R Series is compatible with various hydraulic media, including petroleum-based oils, anti-wear hydraulic oils, and water-glycol fluids. Flexible fluid selection based on actual operating conditions.
6. 100% Drop-In Interchangeability – Zero Retrofit Cost
Manufactured to exact Yuken original specifications—mounting dimensions, port locations, and shaft configurations are identical to the original. No piping modifications or installation adapters are required for direct replacement.
Application Areas
Injection Molding Machines: PV2R2-59 suitable for medium-sized injection molding machine hydraulic power systems
Die-Casting Machinery: 300–600T die-casting machine hydraulic systems
Hydraulic Press Series: 100–500 ton medium-sized hydraulic presses
CNC Machine Tools & Machining Centers: Smooth hydraulic power for precision numerical control systems
Bending & Shearing Machines: Staged flow control for energy-efficient cycle operation
Industrial Power Units: Core power source for indoor hydraulic stations requiring quiet operation
Expert Maintenance Tips
1. Model Identification and Selection
PV2R1 Series: Displacement range 5.8–31.0 ml/r, compact design, suitable for small hydraulic systems
PV2R2 Series: Displacement range 26.6–64.7 ml/r, medium design, suitable for moderate flow hydraulic systems
In model code “PV2R2-59-F-RLR-41”: PV2R2 = Series, 59 = Displacement code (58.2 ml/r), F = Flange mounting, R = Clockwise rotation, LR = Port configuration, 41 = Design number
In model code “PV2R1-31-F-1-R-A”: PV2R1 = Series, 31 = Displacement code (31.0 ml/r), F = Flange mounting, 1 = Shaft type, R = Clockwise rotation, A = Port position
2. Installation Precautions
Verify pump rotation direction matches system requirements—R denotes clockwise, L denotes counter-clockwise (viewed from shaft end).
Confirm mounting type matches—F is flange mounting, L is foot mounting.
PV2R1 Series uses smaller port sizes (typically 19 mm); PV2R2 Series uses larger port sizes (typically 25.4 mm).
Suction piping should be as short as possible, minimizing unnecessary restrictions.
The pump housing must not bear piping loads; suction and discharge lines must have independent supports.
3. Pre-Startup Checklist
Verify oil level in the reservoir is adequate and fluid type is correct (ISO VG32, VG46, or VG68 anti-wear hydraulic oil recommended).
Confirm all piping connections are secure with no leakage.
Prime the pump by filling the housing with oil before first startup to prevent dry running.
4. Fluid Management
High-quality anti-wear hydraulic oil is recommended; maintain fluid cleanliness at NAS 9 or higher—contamination is the leading cause of premature vane pump failure.
PV2R Series is compatible with petroleum-based oils, anti-wear hydraulic oils, and water-glycol fluids.
Regularly check oil temperature to ensure it does not exceed 60°C.
5. Scheduled Maintenance
Replace hydraulic oil and filters every 2000 operating hours or annually.
PV2R Series features cartridge-type construction—cartridges can be replaced independently.
Cartridge replacement can be completed in minutes without removing the entire pump.
