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WhatsApp : +88 01818929292 / +8801730296909
info@smmarineservice.com sohelbhuiyan1213@gmail.com arafatbhuiyan3657@gmail.com
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KYB MAG SERIES HYDRAULIC MOTOR

Item Code:

KYB MAG SERIES HYDRAULIC MOTOR

Brand:

KYB Corporation (Kayaba Corporation), Japan

Condition:

Refurbished


Product Type

Hydraulic Piston Motor

Marine Applications

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

Introduction

The KYB MAG Series Hydraulic Motor is a high-performance piston motor designed to deliver exceptional torque, smooth operation and reliable performance in demanding hydraulic applications. Manufactured by KYB Corporation of Japan, the MAG Series is widely recognized for its durability, efficiency and compact design.

These motors are commonly used in marine hydraulic systems including deck cranes, mooring winches, windlasses, hatch covers and offshore equipment where high torque and precise speed control are essential.

SM MARINE SERVICE™ supplies KYB MAG Series Hydraulic Motors, spare parts, repair services and technical support for marine and offshore customers worldwide.


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What is the KYB MAG Series Hydraulic Motor?

The MAG Series is a hydraulic piston motor designed to convert hydraulic energy into rotary mechanical motion.

The motor is capable of generating high torque at low speeds, making it ideal for heavy-duty marine equipment where controlled movement and high pulling force are required.

Key advantages include:

  • High starting torque
  • Smooth low-speed operation
  • Compact construction
  • High efficiency
  • Long service life
  • Excellent reliability

Common KYB MAG Series Models

The most commonly encountered models include:

MAG-10

Suitable for compact hydraulic systems.

MAG-12

Widely used in small hydraulic drives.

MAG-18

Common in marine auxiliary hydraulic systems.

MAG-26

Used in deck machinery and crane applications.

MAG-33

Ideal for medium-duty hydraulic operations.

MAG-50

Frequently found in marine winch systems.

MAG-85

Heavy-duty hydraulic drive applications.

MAG-170

High-capacity hydraulic motor used in offshore and industrial systems.

SM MARINE SERVICE™ supplies new, used and reconditioned KYB MAG motors depending on customer requirements and availability.


Main Components of KYB MAG Hydraulic Motor

Motor Housing

Provides structural support and protects internal components.

Cylinder Block

Contains multiple pistons responsible for torque generation.

Pistons

Convert hydraulic pressure into rotational force.

Valve Plate

Controls hydraulic oil flow.

Output Shaft

Transfers torque to the driven equipment.

Bearings

Support rotating components and reduce friction.

Sealing System

Prevents oil leakage and contamination.


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Applications in Marine Industry

Deck Crane Hydraulic Systems

Provides slewing, hoisting and luffing motion.

Mooring Winch Hydraulic Systems

Generates the pulling force required for mooring operations.

Windlass Hydraulic Systems

Drives anchor handling equipment.

Hatch Cover Hydraulic Systems

Operates hydraulic mechanisms for hatch opening and closing.

Offshore Equipment

Supports heavy-duty offshore lifting and handling operations.

Hydraulic Power Units

Used as part of integrated hydraulic drive systems.


Operating Principle

Pressurized hydraulic oil enters the motor and acts on the pistons inside the cylinder block.

The piston movement generates rotational force, which is transferred through the output shaft to the connected equipment.

This process allows the motor to provide high torque even at low operating speeds.


Common Problems and Troubleshooting

Low Output Torque

Possible causes:

  • Internal leakage
  • Worn pistons
  • Low hydraulic pressure

Excessive Noise

Possible causes:

  • Bearing wear
  • Air contamination
  • Cavitation

Oil Leakage

Possible causes:

  • Damaged seals
  • Shaft seal wear
  • Loose fittings

Overheating

Possible causes:

  • Contaminated oil
  • Excessive load
  • Insufficient cooling

Slow Operation

Possible causes:

  • Low oil flow
  • Control valve malfunction
  • Internal wear

Maintenance Recommendations

To maximize motor life:

  • Maintain hydraulic oil cleanliness
  • Replace filters regularly
  • Monitor operating pressure
  • Inspect shaft seals
  • Check bearing condition
  • Perform routine performance testing
  • Replace worn parts promptly

Proper maintenance ensures reliable operation and reduces downtime.


Why KYB MAG Motors Remain Popular

The KYB MAG Series remains widely used because of:

  • Proven Japanese reliability
  • High torque performance
  • Long service life
  • Excellent efficiency
  • Easy maintenance
  • Availability of spare parts

These benefits make the MAG Series a preferred hydraulic motor for marine and offshore applications.


Frequently Asked Questions

Is the KYB MAG Series suitable for marine applications?

Yes. The MAG Series is commonly used in deck cranes, windlasses, mooring winches and hatch cover systems.

Can KYB MAG motors be repaired?

Yes. Most internal components can be repaired or replaced during overhaul.

Are spare parts available?

Yes. SM MARINE SERVICE™ supplies spare parts and repair support worldwide.

Can reconditioned motors be supplied?

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

Are manuals available?

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


User Manual and Technical Resources

Available documentation includes:

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

Short Product Description

The KYB MAG Series Hydraulic Motor is a robust piston motor designed for marine, offshore and industrial hydraulic systems. Known for its high torque output, smooth operation and long service life, the MAG Series is widely used in deck cranes, mooring winches, windlasses, hatch cover systems and offshore handling equipment where reliable hydraulic performance is essential.


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 MAG Series Hydraulic Motors, deck crane hydraulic systems, mooring winches, windlasses, hatch cover hydraulic systems and marine hydraulic equipment.


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