YUKEN PV2R3-52 and PV2R3-66 are high-performance single-stage vane pumps independently developed by Yuken Industry Co., Ltd., a renowned Japanese hydraulic equipment manufacturer with a history of more than 70 years. As core large-displacement models of the PV2R3 sub-series in the PV2R product line, these two pumps inherit the series’ inherent advantages of low noise, high pressure resistance, high reliability and stable performance. They adopt a parent-child vane structure design, which enhances operational stability and service life, and are widely applied in large-flow, high-load hydraulic systems, playing an irreplaceable role in heavy industry, metallurgy, port machinery, large-scale injection molding and other fields that require efficient and stable hydraulic power supply.

Model Suffix Explanation

The models of YUKEN PV2R3-52 and PV2R3-66 have clear professional meanings, which directly determine the pump’s series positioning, geometric displacement and core performance, helping to quickly complete equipment matching and selection. The specific explanation is as follows:

• PV2R3: The basic series code, indicating that the pumps belong to the PV2R3 sub-series of YUKEN PV2R vane pumps. As a member of the PV2R single-vane pump family, this sub-series is mainly designed for large-displacement, high-load hydraulic systems, with stronger pressure-bearing capacity and flow output capacity compared with PV2R1 and PV2R2 sub-series.
• 52 & 66: The displacement codes, corresponding to the geometric displacement of the two pumps respectively, which are the core parameters determining the output flow. The two models have the same series structure and performance standards, and the only essential difference lies in the geometric displacement.

Product Core Parameters

As large-displacement models of the PV2R3 series, YUKEN PV2R3-52 and PV2R3-66 have excellent high-pressure and large-flow performance, with precise parameters and stable working performance, which can fully meet the demand of high-load hydraulic systems for efficient power supply. The specific core parameters and differences are detailed as follows:

• YUKEN PV2R3-52 Vane Pump: – Geometric Displacement: 51.8 cm³/rev (3.16 cu.in./rev), which is a medium-large displacement model in the PV2R3 series, enabling it to output stable large flow under standard operating conditions. – Maximum Operating Pressure: When using anti-wear petroleum base oils, the maximum operating pressure can reach 21 MPa (3050 psi), which is consistent with the high-pressure standard of the PV2R series, ensuring stable oil supply under long-term high-load working conditions without leakage. – Shaft Speed Range: 600 r/min to 1800 r/min, and the recommended operating speed is 1200 r/min. This speed range balances working efficiency and service life, avoiding excessive wear caused by ultra-high speed operation. – Volumetric Efficiency: Not less than 92%, which is a key indicator reflecting the pump’s leakage resistance. High volumetric efficiency effectively reduces energy loss, improves the overall energy-saving performance of the hydraulic system, and reduces operating costs.
• YUKEN PV2R3-66 Vane Pump: – Geometric Displacement: 65.5 cm³/rev (3.99 cu.in./rev), which is a large-displacement model in the PV2R3 series, with a larger flow output capacity than the PV2R3-52 under the same speed condition. – Maximum Operating Pressure: Consistent with the PV2R3-52, up to 21 MPa (3050 psi) when using anti-wear petroleum base oils, ensuring strong adaptability to high-load working scenarios. – Shaft Speed Range: 600 r/min to 1800 r/min, recommended operating speed 1200 r/min, same as the PV2R3-52, balancing efficiency and service life. – Volumetric Efficiency: Not less than 92%, same as the PV2R3-52, ensuring excellent energy-saving performance and leakage resistance.
• Common Parameters of Both Pumps: – Hydraulic Medium Adaptability: Compatible with a variety of hydraulic media, including anti-wear petroleum base oils, R&O type oils, water glycols and synthetic fluids, which can adapt to different industrial working condition requirements. – Medium Temperature Range: -10°C to 80°C, with strong environmental adaptability, ensuring stable operation in both low-temperature and high-temperature working environments without affecting performance. – Installation Mode: Standard flange installation, with compact overall structure, convenient for installation in limited space of large-scale equipment, and easy to disassemble and maintain.

Structural Features & Core Advantages

YUKEN PV2R3-52 and PV2R3-66 adopt advanced structural design and high-quality materials, integrate the overall advantages of the PV2R series and the characteristics of parent-child vane structure, and have excellent performance and high durability. Their shared core advantages are reflected in the following aspects:

1. Low Noise & Stable Operation: Adopting parent-child vane structure and high-order equation stator curve design, the impact of vanes on the stator is reduced, pressure and flow pulsation are effectively optimized, and the operating noise is controlled below 70 dB(A). This not only meets the quiet environment requirements of industrial production, but also reduces the impact of noise on the service life of other equipment components, ensuring stable operation even under high pressure and high speed conditions.
2. High Pressure & Large Flow Performance: With a maximum operating pressure of 21 MPa, combined with different geometric displacements (51.8 cm³/rev and 65.5 cm³/rev), the two pumps can deliver sufficient hydraulic flow and pressure for high-load, large-flow hydraulic systems, meeting the demand for efficient and continuous operation of heavy-duty equipment such as large-scale injection molding machines and port cranes.
3. Long Service Life & High Reliability: The stator and vanes are treated with special surface hardening technology, which significantly improves their wear resistance and corrosion resistance, and extends their service life by 30% compared with ordinary vane pumps. The pump body is made of high-strength aluminum alloy material, which has good explosion-proof, heat-dissipating and pressure-bearing performance, enabling stable operation in complex and harsh working conditions such as high temperature, high pressure and large vibration. The parent-child vane structure further enhances the reliability of long-term operation.
4. Excellent Sealing Performance: Adopting high-quality sealing components and optimized oil port layout, the leakage prevention performance is effectively enhanced, avoiding hydraulic oil leakage during high-pressure operation, and ensuring the stability of the hydraulic system and the safety of the working environment.
5. Easy Maintenance & Strong Universality: Adopting an integrated driving component design, which is configured as a complete kit and can be supplied as a cartridge assembly. This design facilitates quick replacement of wearing parts such as vanes and bearings, shortens maintenance time and reduces maintenance costs. At the same time, the standard flange installation mode makes it highly compatible with conventional hydraulic equipment, improving the flexibility of equipment matching. The pump core’s cartridge structure also makes the use more flexible and maintenance more convenient.

Application Scenarios

Due to their large displacement, high pressure resistance, stable performance and parent-child vane structure design, YUKEN PV2R3-52 and PV2R3-66 vane pumps are mainly used in large-flow, high-load hydraulic systems. Their application fields are mainly concentrated in heavy industry and large-scale equipment, with differentiated application focuses based on displacement differences:

• YUKEN PV2R3-52 Application: Mainly used in hydraulic systems with medium-large flow demand and high load, such as medium-large injection molding machines, die-casting machines, metallurgical auxiliary machinery (such as continuous casting machine auxiliary systems), heavy-duty forging machinery and large-scale leather processing equipment. It provides stable and efficient hydraulic power for equipment operation, ensuring the smooth progress of production and processing operations. It is also suitable for hydraulic systems of light industrial machinery with large flow demand, such as large-scale shoe machines and hollow forming machines.
• YUKEN PV2R3-66 Application: With larger displacement and flow output capacity, it is mainly applied to hydraulic systems with large flow demand and heavy load, such as large-scale port cranes, container handlers, large excavators, large steel rolling machines and super-large injection molding machines. It adapts to the harsh working environment of ports, construction sites and metallurgical plants, and provides reliable hydraulic support for the heavy-load continuous operation of equipment. It is also suitable for hydraulic systems of large-scale ship auxiliary equipment and industrial boilers, adapting to high-demand working condition requirements.
• Common Application Fields: Both pumps can be used in hydraulic systems of heavy industrial equipment, large-scale plastic machinery, port & construction machinery and other fields, adapting to different working conditions and load requirements, and providing reliable hydraulic support for industrial production. They are widely used in various scenarios that require stable and efficient large-flow hydraulic power supply, becoming important core components in modern hydraulic systems.

Summary

YUKEN PV2R3-52 and PV2R3-66 are high-quality large-displacement single-stage vane pumps integrating high performance, reliability and practicality. The two pumps belong to the same PV2R3 sub-series, share the same structural design and core performance advantages, and only differ in geometric displacement, thus forming differentiated positioning in flow output and application scenarios. Both adopt parent-child vane structure, with the advantages of low noise, high pressure resistance, long service life, excellent sealing performance and easy maintenance. Among them, PV2R3-52 is suitable for medium-large flow, high-load hydraulic systems, while PV2R3-66 is more suitable for large-flow, heavy-load hydraulic systems. As core models of the YUKEN PV2R3 series, they have become the preferred matching products for upgrading and transforming large-scale hydraulic systems in various industries, effectively improving the stability and efficiency of hydraulic systems, and providing strong support for the development of modern industry.