PV2R2-53/59 YUKEN Vane Pump 21 MPa

Product Overview

The YUKEN PV2R2-53-F-RAA-41 and PV2R2-59-F-RAA-41 are fixed-displacement vane pumps in the YUKEN PV2R Series Single Vane Pump family, developed for high-pressure industrial hydraulic systems where stable flow delivery, reliable operation and low noise are important.

According to YUKEN’s official documentation, the PV2R Series was developed as a high-pressure, high-performance vane pump series especially for low-noise operation. YUKEN also provides the internal driving components as cartridge kits, simplifying replacement of the major pump driving components during service.

The model designation is significant:

• PV2R2: PV2R2 frame size
• 53 / 59: Nominal displacement code
• F: Flange mounting
• R: Clockwise shaft rotation, viewed from shaft end
• A: Upward discharge port position
• A: Upward suction port position
• 41: Design number

YUKEN also confirms installation interchangeability between the previous PV2R2-–-RAA-40 design and the current PV2R2-–-RAA-41 design, with lower noise identified as a major improvement of the newer design.

For industrial replacement applications, these characteristics make the PV2R2-53-F-RAA-41 and PV2R2-59-F-RAA-41 suitable for pump replacement, service refurbishment and maintenance programs.

Technical Specifications

PV2R2-53-F-RAA-41

• Manufacturer: YUKEN
• Series: PV2R Series
• Pump Type: Single Vane Pump
• Model: PV2R2-53-F-RAA-41
• Geometric Displacement: 52.5 cm³/rev
• Maximum Operating Pressure, Petroleum-Based Anti-Wear Fluid: 21 MPa
• Maximum Operating Pressure, R&O Fluid: 14 MPa
• Maximum Operating Pressure, Water-Glycol / Water-Containing Fluid: 16 MPa
• Maximum Operating Pressure, Water-in-Oil Emulsion: 7 MPa
• Maximum Operating Pressure, Phosphate Ester: 7 MPa
• Shaft Speed Range: 600–1800 r/min
• Maximum Speed with Phosphate Ester: 1200 r/min
• Control: Fixed displacement
• Mounting: Flange mounting
• Rotation: Clockwise, viewed from shaft end
• Discharge Port: Upward
• Suction Port: Upward
• Design Number: 41
• Approximate Mass of Complete Flange-Mounted PV2R2 Pump: 15.5 kg

These values are based on the YUKEN official PV2R Series technical catalogue.

PV2R2-59-F-RAA-41

• Manufacturer: YUKEN
• Series: PV2R Series
• Pump Type: Single Vane Pump
• Model: PV2R2-59-F-RAA-41
• Geometric Displacement: 58.2 cm³/rev
• Maximum Operating Pressure, Petroleum-Based Anti-Wear Fluid: 21 MPa
• Maximum Operating Pressure, R&O Fluid: 14 MPa
• Maximum Operating Pressure, Water-Glycol / Water-Containing Fluid: 16 MPa
• Maximum Operating Pressure, Water-in-Oil Emulsion: 7 MPa
• Maximum Operating Pressure, Phosphate Ester: 7 MPa
• Shaft Speed Range: 600–1800 r/min
• Maximum Speed with Phosphate Ester: 1200 r/min
• Control: Fixed displacement
• Mounting: Flange mounting
• Rotation: Clockwise, viewed from shaft end
• Discharge Port: Upward
• Suction Port: Upward
• Design Number: 41
• Approximate Mass of Complete Flange-Mounted PV2R2 Pump: 15.5 kg

YUKEN’s official specification data identifies the PV2R2-53 and PV2R2-59 nominal displacement variants at 52.5 cm³/rev and 58.2 cm³/rev, respectively.

Peak Pressure Clarification

To comply with strict engineering-data verification, no independent peak-pressure rating is stated here.

The YUKEN official catalogue provides Maximum Operating Pressure for the PV2R2 models but does not publish a separate Peak Pressure / Transient Peak Pressure figure for PV2R2-53-F-RAA-41 or PV2R2-59-F-RAA-41.

Therefore, the correct engineering practice is to use the stated 21 MPa maximum operating pressure for petroleum-based anti-wear hydraulic oil, while applying the lower pressure limits specified for other fluid types.

Weight Clarification

YUKEN specifies the approximate mass of the complete PV2R2 pump as:

• Flange mounting: 15.5 kg
• Foot mounting: 19.8 kg

These are complete-pump weights, not cartridge-kit weights. YUKEN does not publish a standardized individual cartridge-kit mass in the referenced catalogue.

Key Technical Advantages

1. High-Pressure Fixed-Displacement Performance

For petroleum-based anti-wear hydraulic fluids, the PV2R2 family provides a maximum operating pressure of 21 MPa, with 52.5 and 58.2 cm³/rev displacement options for the two models covered here.

A fixed-displacement architecture provides:

• Predictable flow output
• Straightforward system control
• Relatively simple construction
• Easy service planning
• Reliable operation in stable-duty applications

2. Low-Noise Pump Architecture

YUKEN specifically developed the PV2R Series for low-noise operation.

The transition from the older PV2R2 design number 40 to design number 41 also retained installation interchangeability while improving noise performance.

3. Cartridge-Based Serviceability

YUKEN states that the integrated driving components of PV2R pumps can be supplied in cartridge-kit form, allowing the driving components to be replaced more easily.

This is particularly valuable in industrial maintenance because cartridge replacement can reduce the complexity of rebuilding the entire pump.

4. Fluid-Specific Pressure Capability

The PV2R2 does not have one universal pressure rating for every hydraulic fluid.

YUKEN specifies:

• Petroleum-based anti-wear fluid: 21 MPa
• R&O type fluid: 14 MPa
• Water-glycol / water-containing fluids: 16 MPa
• Water-in-oil emulsions: 7 MPa
• Phosphate esters: 7 MPa

Fluid selection must therefore be included in pressure and pump-life calculations.

5. Precision Replacement Engineering

For aftermarket pump service, performance depends on the relationship between the rotor, vanes, cam ring, side plates and sealing components rather than one component alone.

Our replacement approach focuses on:

• Critical dimensional control
• Running-clearance verification
• Component matching
• Assembly consistency
• 100% simulated working-condition testing

Specific material grades, heat-treatment hardness and surface-finish values are not stated because they are not individually disclosed for these complete models in the reviewed YUKEN public documentation.

6. Installation Interchangeability

YUKEN officially identifies installation interchangeability as Yes between the previous PV2R2 design number 40 and current design number 41, while noting lower noise as an improvement.

This is particularly useful for retrofit and replacement applications involving existing hydraulic equipment.

Application Areas

Typical applications include:

• Plastic Injection Molding Machines
• Hydraulic Presses
• Machine Tools
• Industrial Hydraulic Power Units
• Material Handling Equipment
• Industrial Manufacturing Machinery
• General Hydraulic Actuation Systems

YUKEN specifically identifies injection molding machinery among the applications supported by the PV2R Series.

Expert Maintenance Tips

1. Verify the Complete Model Code

Do not identify the replacement pump using only “PV2R2-53” or “PV2R2-59”.

Verify the complete code:

PV2R2-53-F-RAA-41

or

PV2R2-59-F-RAA-41

and confirm:

• Mounting: F
• Rotation: R
• Discharge position: A
• Suction position: A
• Design number: 41

These code elements are defined in the official YUKEN model-number designation.

2. Confirm Shaft Rotation

R means clockwise rotation when viewed from the shaft end.

Incorrect rotation can prevent correct pressure generation and may cause abnormal internal loading, so the rotation must always be matched to the original pump configuration.

3. Check Suction Conditions

The normal shaft speed range is 600–1800 r/min, while low-speed starting requires attention to hydraulic-fluid viscosity and suction conditions. YUKEN specifies viscosity limitations for low-speed startup.

Before commissioning, inspect:

• Suction line diameter
• Suction hose length
• Inlet restrictions
• Hydraulic-oil viscosity
• Air leakage on the suction side

4. Match Pressure to Hydraulic Fluid

Do not assume that every PV2R2 configuration can continuously operate at 21 MPa.

The allowable pressure depends on hydraulic-fluid type and must be checked against the YUKEN specification before commissioning.

5. Phosphate Ester Applications Require Special Attention

YUKEN specifies special fluororubber seals for phosphate ester service and requires the appropriate F- designation. The maximum shaft speed is also limited to 1200 r/min under this condition.

Standard seal configurations should therefore not be assumed suitable for phosphate ester applications.

6. Control Contamination During Replacement

When replacing a cartridge or complete pump, inspect:

• Hydraulic-fluid cleanliness
• Return filtration
• Suction strainer condition
• Reservoir contamination
• Metallic wear debris

Replacing precision pump components without correcting the original contamination source can accelerate wear on the new running surfaces.