Best Quality Products For Marine Equipment

Marine & Industrial Gearbox Supplier

High-Performance Marine Gearboxes, Turning Gear Systems, Cyclo Turning Gearboxes, Slewing Gears & Industrial Gearbox Solutions for Ships and Offshore Equipment

Marine Gearbox Industrial Gearbox Turning Gear Cyclo Turning Gearbox Slewing Gear Gearbox Spare Parts
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Marine Gearbox & Industrial Transmission Solutions

Marine gearboxes play a critical role in transferring engine power to propulsion systems and supporting ship machinery operations. With three decades of experience in marine engineering, we supply reliable gearbox systems for ship engines, marine machinery, and industrial equipment worldwide.

Ship Propulsion Gearboxes

High-performance marine gearboxes that efficiently transfer engine power to propulsion systems, ensuring optimal speed control and torque management for all vessel types.

Engine Maintenance Support

Turning gear systems and cyclo gearboxes that enable safe, controlled engine rotation during maintenance, inspection, and overhaul operations onboard ships.

Deck & Industrial Machinery

Slewing gears and industrial gearbox solutions for ship cranes, deck machinery, offshore lifting equipment, and heavy industrial rotating applications.

Marine Gearbox Types We Supply

Comprehensive gearbox solutions for every marine and industrial application

Main Engine Turning Gearbox

  • Marine diesel engine maintenance
  • Safe crankshaft rotation control
  • Ship engine inspection support
  • Engine overhaul operations

Cyclo Turning Gearbox

  • High torque transmission
  • Compact & robust design
  • Heavy duty engine rotation
  • Reliable marine environment performance

Slewing Gear Systems

  • Ship crane slewing drives
  • Offshore lifting equipment
  • Marine deck machinery
  • Industrial rotating equipment
Industrial Gearbox Supplier,Marine Gearbox Supplier

What is a Marine Turning Gear?

A marine turning gear is an essential mechanical system used to slowly rotate large marine diesel engines during maintenance, inspection, and overhaul operations. It ensures safe crankshaft movement without firing the engine, protecting crew and machinery during critical servicing procedures.

Key Components of Turning Gear Systems

Drive Unit

Electric motor-driven unit providing controlled low-speed crankshaft rotation

Cyclo Reducer

High-ratio cycloidal reduction gear ensuring precise torque and speed control

Engagement System

Automatic engagement and disengagement mechanism for safe engine starting

Safety Interlocks

Built-in interlocks preventing accidental engine start while turning gear is engaged

Gearbox Brands & Replacement Solutions

We supply gearboxes and spare parts for all major marine gearbox manufacturers

Supported Gearbox Brands

We are an authorised distributor for leading global marine and industrial gearbox manufacturers, providing genuine parts and full technical support for each brand.

  • Zollern Getriebe gearbox systems
  • Sumitomo Heavy Industries
  • Mitsui & Co. marine gearboxes
  • Fukushima Ltd. turning gears
  • Custom replacement & equivalent parts

Gearbox Spare Parts & Maintenance

We supply genuine gearbox spare parts and replacement components, and our engineers support gearbox maintenance, inspection, and replacement solutions for ship machinery.

  • Gear sets & pinion assemblies
  • Bearings & bushings
  • Shafts & couplings
  • Seals & gaskets
  • Clutch assemblies

Marine Gearbox Spare Parts Supplier

Genuine gearbox components and replacement parts for all major marine and industrial gearbox brands

Gear Sets

Precision-cut marine gear sets

Bearings

Heavy-duty gearbox bearings

Shafts

Precision-machined gear shafts

Seals & Gaskets

Marine-grade sealing solutions

Industrial Gearbox Solutions

Heavy-duty industrial and marine gearbox systems for demanding applications

Marine Deck Machinery

Industrial gearboxes engineered for deck winches, anchor windlasses, mooring systems, and cargo handling equipment where reliable torque transmission is critical.

Offshore Drilling Equipment

Heavy-duty gearbox solutions for offshore drilling rigs, subsea equipment, and platform machinery requiring continuous high-torque performance in harsh environments.

Cargo Handling Systems

Marine gearboxes for ship cargo cranes, hatch cover drives, and conveyor systems ensuring smooth and reliable cargo operations in port and at sea.

Marine Gearbox Equipment We Supply

Marine Gearboxes

Turning Gears

Cyclo Gearboxes

Slewing Gears

Industrial Gearboxes

Gear Reducers

Couplings

Gearbox Spare Parts

Marine Gearbox Solutions for Different Vessels

Customised gearbox solutions for various vessel types and marine operations

Cargo Ships

Tanker Vessels

Offshore Vessels

Naval Vessels

Passenger Vessels

Why Choose Green Alfa Machinery

Your trusted marine gearbox supplier and industrial transmission partner

30+ Years Experience

Three decades supplying marine gearboxes and turning gear systems to ship owners and shipyards globally

Genuine Parts

100% authentic gearbox spare parts from authorised manufacturers with full warranty and certification

Global Supply

Worldwide delivery network ensuring timely gearbox and spare parts availability to any port or site

Technical Support

Expert engineering support for gearbox selection, maintenance, and emergency replacement requirements

Frequently Asked Questions

What is a marine gearbox?

A marine gearbox transfers engine power to the ship's propulsion system, adjusting speed and torque to match operational requirements. It plays a critical role in controlling vessel speed, reversing propeller direction, and ensuring efficient power transmission between the main engine and the propeller shaft.

What is a turning gear used for?

A turning gear is used to rotate a marine engine slowly during maintenance, inspection, and overhaul operations. It allows engineers to position the engine crankshaft safely without firing the engine, enabling access to all cylinders and mechanical components during scheduled service and repair work.

What is a cyclo turning gearbox?

A cyclo turning gearbox uses cycloidal reduction technology to provide high torque output in a compact, robust design. It is specifically designed for heavy-duty marine engine rotation during maintenance operations, offering reliable performance and long service life in demanding marine environments.

What is a slewing gear?

A slewing gear is a rotary drive system used in marine cranes, deck machinery, and offshore lifting equipment to provide smooth 360-degree rotation. It transmits torque to rotating structures and is a critical component in ship cranes, offshore platforms, and industrial rotating equipment.

Do you supply gearbox spare parts?

Yes, we supply genuine gearbox spare parts and replacement components for all major marine and industrial gearbox brands including Zollern, Sumitomo, Mitsui, and Fukushima. Our spare parts inventory includes gear sets, bearings, shafts, seals, and clutch assemblies with global delivery and full technical support.

What types of industrial gearboxes do you supply?

We supply a wide range of industrial gearboxes including helical gear reducers, bevel gearboxes, planetary gearboxes, worm gearboxes, and cycloidal reducers. These are used in marine deck machinery, ship cargo handling equipment, industrial conveyors, and offshore drilling equipment.

Which vessel types do you supply gearbox solutions for?

We supply marine gearbox solutions for cargo ships, tanker vessels, offshore vessels, naval ships, passenger vessels, fishing boats, and ship repair companies. Our gearbox solutions are also provided to ship management companies, marine maintenance firms, and offshore operators worldwide.

Need Marine Gearbox Solutions?

With 30+ years of marine industry experience, we provide reliable marine gearboxes, turning gears, slewing gears, and industrial gearbox systems for ships and offshore equipment. Our team is ready to assist with gearbox selection, spare parts, and technical support.

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