Product Type

Variable Displacement Axial Piston Hydraulic Pump

Marine Applications

• Deck Crane Hydraulic Systems
• Mooring Winch Hydraulic Systems
• Windlass Hydraulic Systems
• Hatch Cover Hydraulic Systems
• Hydraulic Power Units (HPU)
• Offshore Crane Systems
• Cargo Handling Equipment
• Marine Deck Machinery

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Introduction

The KYB PSV Series Hydraulic Pump is one of the most widely used variable displacement axial piston pumps in hydraulic systems worldwide. Manufactured by KYB Corporation of Japan, the PSV Series is known for its compact design, high efficiency, excellent pressure control and long service life.

The PSV Series pumps are commonly installed in marine hydraulic systems such as deck cranes, mooring winches, windlasses, hatch covers and hydraulic power units. Their ability to deliver stable hydraulic flow under varying loads makes them suitable for demanding marine applications.

SM MARINE SERVICE™ supplies KYB PSV Series Hydraulic Pumps, spare parts, repair services and technical support for marine and offshore industries worldwide.

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What is the KYB PSV Series Hydraulic Pump?

The KYB PSV Series is a variable displacement axial piston pump designed to provide efficient hydraulic power in heavy-duty industrial and marine applications.

Unlike fixed displacement pumps, the PSV Series automatically adjusts hydraulic flow according to system demand, reducing energy consumption and improving operational efficiency.

Key advantages include:

• High operating efficiency
• Variable displacement control
• Compact design
• Low noise operation
• High-pressure performance
• Long service life

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Common KYB PSV Series Models

The most commonly found models include:

PSV2-55

Compact pump widely used in smaller hydraulic systems.

PSV2-60

Popular model for medium-duty marine applications.

PSV2-62

Used in hydraulic cranes and deck equipment.

PSV2-63

Commonly installed in hydraulic power units.

PSV2-70

Suitable for high-flow hydraulic systems.

PSV2-75

Used in offshore and marine crane systems.

PSV2-84

Heavy-duty hydraulic applications.

PSV2-90

High-capacity marine hydraulic systems.

PSV2-140

Large displacement pump used in offshore and industrial hydraulic equipment.

SM MARINE SERVICE™ supplies both new and reconditioned KYB PSV pumps depending on customer requirements and budget.

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Main Components of the KYB PSV Pump

Pump Housing

Provides structural support and protects internal components.

Cylinder Block

Contains multiple pistons that generate hydraulic flow.

Pistons

Convert mechanical energy into hydraulic pressure.

Swash Plate

Controls piston stroke and pump displacement.

Valve Plate

Directs oil flow within the pump.

Servo Control System

Adjusts displacement according to load demand.

Shaft Assembly

Transfers power from the prime mover to the pump.

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Applications in Marine Industry

Deck Crane Hydraulic Systems

Provides hydraulic power for lifting, slewing and luffing operations.

Mooring Winch Systems

Supplies hydraulic pressure for rope and wire handling equipment.

Windlass Hydraulic Systems

Used for anchor deployment and retrieval operations.

Hatch Cover Hydraulic Systems

Operates hydraulic cylinders and motors used for hatch opening and closing.

Hydraulic Power Units (HPU)

Functions as the primary hydraulic power source.

Offshore Equipment

Supports hydraulic machinery used in offshore operations.

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Operating Principle

The pump shaft rotates the cylinder block, causing pistons to move against the swash plate.

As the pistons reciprocate, hydraulic oil is drawn into the pump and discharged under pressure.

The displacement control mechanism automatically adjusts output flow according to system requirements, ensuring efficient operation.

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Common Problems and Troubleshooting

Low Hydraulic Pressure

Possible causes:

• Worn pistons
• Damaged valve plate
• Internal leakage

Excessive Noise

Possible causes:

• Cavitation
• Air entering the system
• Worn bearings

Hydraulic Oil Leakage

Possible causes:

• Damaged shaft seal
• Loose fittings
• Worn gaskets

Overheating

Possible causes:

• Contaminated oil
• Restricted flow
• Excessive load

Reduced Pump Performance

Possible causes:

• Servo control malfunction
• Swash plate wear
• Cylinder block damage

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Maintenance Recommendations

To maximize service life:

• Maintain hydraulic oil cleanliness
• Replace filters regularly
• Monitor operating pressure
• Inspect shaft seals
• Check oil temperature
• Perform periodic performance testing
• Replace worn components promptly

Proper maintenance significantly reduces downtime and repair costs.

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Why the KYB PSV Series Remains Popular

The KYB PSV Series remains widely used because of:

• Proven reliability
• Excellent efficiency
• Easy maintenance
• Long operational life
• Availability of spare parts
• Strong performance in marine environments

These advantages make the PSV Series a preferred choice for marine hydraulic systems worldwide.

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Frequently Asked Questions

Is the KYB PSV Series suitable for marine applications?

Yes. The PSV Series is widely used in deck cranes, windlasses, mooring winches and hydraulic power units onboard ships.

Can KYB PSV pumps be repaired?

Yes. Most components can be repaired, overhauled or replaced.

Are spare parts available?

Yes. SM MARINE SERVICE™ supplies spare parts for KYB PSV pumps worldwide.

Can reconditioned pumps be supplied?

Yes. New and reconditioned units are available depending on stock and customer requirements.

Are technical manuals available?

Yes. User manuals, service manuals and spare parts catalogs can be provided upon request.

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User Manual and Technical Resources

Available documentation includes:

• User Manual
• Service Manual
• Spare Parts Catalog
• Hydraulic Drawings
• Troubleshooting Guide
• Overhaul Procedure
• Technical Data Sheet

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Short Product Description

The KYB PSV Series Hydraulic Pump is a high-performance variable displacement axial piston pump designed for marine, offshore and industrial hydraulic systems. Widely used in deck cranes, mooring winches, windlasses, hatch cover systems and hydraulic power units, the PSV Series offers reliable performance, efficient hydraulic control and long service life in demanding operating conditions.

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SM MARINE SERVICE™

Bangladesh Office

Samir Market, DT Road, Pahartali, Beside CDA Market, Chattogram, Bangladesh

China Warehouse and Support Center

Shanghai, China

SM MARINE SERVICE™ supplies both New Equipment and Reconditioned Equipment depending on customer requirements and budget.

We provide worldwide supply, sourcing, repair, calibration, technical support and spare parts services for marine automation, navigation, communication and marine electronic systems.

Website: https://www.smmarineservice.com

Email: info@smmarineservice.com

WhatsApp and Viber: +8801818929292

Marketing Contact: Nazmul Hasan Bhuiyan

Mobile WhatsApp and Viber: +8801730296909

SM MARINE SERVICE™ provides worldwide sourcing, supply, repair, calibration, technical support and spare parts services for KYB PSV Series Hydraulic Pumps, hydraulic motors, hydraulic power units, deck cranes, windlass systems, mooring winches and marine hydraulic equipment.

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