Yuken Vane Pump: PV2R Vane Pumps

Yuken Vane Pump: PV2R Vane Pumps

by Zuosen Hydraulic on December 15, 2021 Categories: News


Hydraulics is a branch of applied science and engineering concerned with liquid mechanical characteristics. One of our excellent hydraulics equipment is the Yuken vane pump, which will give you the highest performance in the hydraulic system. And the available PV2R series models are PV2R1, PV2R2, PV2R3 and PV2R4 for single vane pumps and  PV2R12, PV2R13, PV2R23, PV2R33, PV2R14, PV2R24 and PV2R34 for double vane pumps.

This article will describe the yuken vane pump general guidelines. In addition, it will also cover the product's troubleshooting and maintenance guide.

What are vane pumps, exactly?

A vane pump is a self-priming positive displacement pump that delivers a consistent flow at different pressures. A gearbox couples a motor for operation. A relief valve is present on the pump to prevent it from building up to a force that may destroy it.

You may find a slotted rotor with vanes in the pump head. The vanes divide the pump head between the rotor and the outer casing, allowing the vane pump to self-prime since the chambers function similarly to valves.

The pump head is primarily round, but there is a flat section where the vanes enter and exit the main rotor. Due to centrifugal force, the vanes will push towards the casing while the pump is running, with forces acting outwards to maintain the vanes tight against the case.

The casing is flatter and tighter against the rotor as the vanes approach the pump's output. Subsequently, it pushes the vane into the rotor and discharges the fluid via the pump's exit.

What is the process through which a hydraulic Vane Pump generates pressure?

Hydraulic vane pumps generate pressure by pushing hydraulic fluid into smaller and smaller spaces before returning it to the system. It usually arises due to a combination of sliding vanes, intake and discharge apertures, and an off-center driving shaft relative to the chamber.

Typically, air pressure pushes the fluid through input holes and into the chamber of the pump. After collecting the liquid, the portion creates a seal between two vanes attached to the driveshaft.

Because the driving shaft is off-center to the pump chamber, the vanes are forced in by the exterior wall as it spins, reducing the distance between them. The volume of the fluid changes at this point, raising the pressure.

When the pressure is at its highest state, the system pushes it out of the pump on the opposite side of the chamber.

PV2R Yuken Vane Pumps: An Overview

Based on the original yuken vane pump, Zuosen Hydraulic created the PV2R Yuken vane pump. Generally, PV2R series has two types hydraulic fluid output mechanism.

  • PV2R series Single Vane Pumps:The available models are PV2R1, PV2R2, PV2R3 and PV2R4.

 PV2R Single Yuken Vane PumpPV2R Single Yuken Vane Pump

  • PV2R series double Vane Pumps:The available models are PV2R12, PV2R13, PV2R23, PV2R33, PV2R14, PV2R24 and


PV2R Double Yuken Vane Pumps

All connection measurements and replacement components are interchangeable with the original Yuken. It also features a more sophisticated construction and performance, improved efficiency, reduced noise and ripple, and longer life.

PV2R series single pumps produce output flows ranging from 5.8 to 237 cm3/rev (.354 to 14.46 cu.in./rev) to meet the needs of various applications, including injection molding machines. The pump's integrated drive elements have been consolidated into a kit and are available as a cartridge kit. As a result, the replacement of the driving components is straightforward.

Hydraulic Fluids

Hydraulic fluid properties heavily influence the performance and maintenance of the PV2R yuken vane pump system. The use of clean, high-quality fluid aids in the effective running of the system and offers enough lubrication.

The hydraulic fluid must be lubricious to reduce wear between tightly fitting working components and resist rust, corrosion, foaming, and other issues. The liquid employed should be less sensitive to temperature variations if you utilize the system across an extensive temperature range.

Petroleum-based fluids are the most popular and appropriate additives to achieve the attributes above. The following is a list of hydraulic fluids compatible with the yuken vane pump.

It's worth noting that the kind of hydraulic fluid affects the maximum pressure and pump speed.

  • Turbine oilis the most common pure mineral oil used for lubrication in commercial applications.
  • Mineral type Oil:Rust and Oxidation Inhibitor Type (R&O type)
  • Antiwear type oil:Mineral type oil + antiwear additives for operation up to 400 kg/cm2
  • Oil with high viscosity index:(Specially specified oils) Consists of mineral oil and additives.
  • Aerospace hydraulic oil:This is special oil used in aircraft applications.
  • Fire-resistant oil:Phosphate Ester, Water Glycols, Water Emulsion, water emulsions oil



The hydraulic system has certain advantages over the Yuken Vane ump.

  • Handles thin liquids at comparatively more significant pressures
  • extending the vane compensate wear.
  • Preferred for solvents
  • For brief periods, it is possible to run dry.
  • One seal or stuffing box is allowed.
  • Creates a strong vacuum

A variety of applications

You may utilize PV2R Yuken Vane Pumps in various applications, including construction equipment, mining machinery, rubber and plastic machinery, shoe machinery, die casting machinery, metallurgical machinery, metal cutting machinery, and all forms of hydraulic systems.

However, yuken vane pumps are popular in


  • Fuel Transfer and Deicing are two services offered by the aviation industry
  • Fuels, lubricants, and refrigeration coolants in the automobile industry
  • LPG and NH3 Transfer in Bulk
  • Filling LPG Cylinders
  • Alcohols
  • Freons and ammonia in refrigeration.
  • Solvents
  • Water-based solutions


Quick Installation and Start-Up

The following is a quick installation and start-up tutorial for the yuken vane pump. This instruction is also available in the product catalog.

  • Install it where you want it after removing the Power Pack from the packaging case and adequately cleaning the exterior components.
  • You may use seamless tubes and fittings or flexible hoses to connect your equipment's power pack.
  • You should remove all burrs, tubes, and pipes and clean fittings adequately.
  • Flush the whole system and actuators after adequately cleaning the reservoir to eliminate any pollutants.
  • Add clean oil to the tank.
  • Examine the electric motor and pump shaft for any misalignment, which should be less than 0.05
  • Connect the electric motor to the supply line using the starter and other control components such as solenoid valve pressure switches, as specified by the motor manufacturer.
  • The job turns on the electric motor and checks that the spinning on the pump is correct.
  • Before operating the engine continually, repeat the process three or four times. Check for oil leaks in piping, fittings, and every point in the system, and fix them immediately.
  • By bringing the actuator to a dead state by actuating a solenoid valve, turn the pressure adjustment knob of the relief valve clockwise to raise the system pressure.
  • Rotating the piston back and forth until it withdraws all air from the system, bleed the actuator. If bleeding points aren't accessible, remove both the inlet and outlet line fittings from the actuator and move it back and forth.
  • If the oil level in the tank drops when filling the actuator and oil line, refill it up with clean oil. The Power Pack is now up and running.

Troubleshooting Possible cause and Remedies

If you're having difficulties with your yuken Vane Pump, the following instructions will help you figure out what's wrong, or you can contact one of our Technical Sales Engineers:

The yuken pump Does not draw fluid

This problem might happen due to some possible causes:  Pump Dry Running, Valves Worn, Inlet Valve partially closed or closed, Pump Drawing Air, Filter Blocked, Suction Restrictions, Steam Blockage, Low Pump Speed, Relief Valve Partially Open Seized or worn, etc.

Reduced Flow & Pressure

This problem might happen due to Low Pump Speed, Restricted Suction, Pump Wear, Restricted Discharge, Relief Valve Operation, Vane Installation, and Direction of Rotation.

Noisy Pump

The noisy pump is a common problem that comes from Low Inlet Pressure, High Pump Speed, Pump Distance from Fluid Source, Blocked Outlet, Pump Loose, Pump Worn, Pipes that are not fit Valve Failure, Relief Valve Setting, Vane Damage, etc. correctly.

Damaged Vanes

This situation might happen due to solid Entry, Relief Valve Failure, Water Hammer, Misalignment, Excessive wear, and Solid Accumulation.


Leakage may happen due to O ring Failure, Shaft wear/Damage, Over lubrication, Cavitation, and Particle Ingress.

To trouble these problems we must be careful in some factors in our operation. Such as,

  1. Knowing the system:The assurance of understanding the system is perhaps essential to troubleshooting. Knowing the system's capabilities and the proper operating pressure is necessary for learning about it in this scenario.
  2. Development systematic procedure:Analyze the system and create a logical process for adjusting valves, mechanical stops, interlocks, and electrical controllers. Listening for flow in the lines or touching them for warmth may frequently be used to trace flow patterns. Create a cause-and-effect troubleshooting chart similar to the ones shown in this section. The effort invested in such a project, in the beginning, might avoid hours of system downtime.
  3. Recognition of trouble indication:You may learn the capacity to spot warning signs in a particular system via a lot of practice.

How to maintain your yuken vane pump

Simple maintenance practices considerably impact hydraulic systems' performance, efficiency, and longevity. Yet, because of their simplicity, they are often neglected.

  • Maintain a logbook for all of the system's equipment to record maintenance reports at regular intervals
  • Maintains an adequate supply of clean hydraulic fluid in the system of the right kind and viscosity
  • Filters and strainers should be changed and cleaned regularly
  • Maintain a firm grip on all connections, but not to the point of distortion, to keep air out of the system


Our skilled hydraulic experts at Zuosen Hydraulics have years of expertise maintaining and repairing hydraulic pumps of various types, including vane pumps. We'll even come out to your place of business to make the procedure as efficient and straightforward as feasible. Contact us immediately to request repairs or set up a preventive maintenance plan.