Major Component Supply, Repairs & Exchange

We deliver specialist wind turbine component repair, refurbishment, exchange and engineering services for wind farm operators, OEMs and service providers across Europe and international markets.

Our expertise includes gearbox repair, main shaft refurbishment, nacelle overhauls, turbine component supply, up-tower inspections and engineering project management solutions designed to maximise turbine reliability, performance and operational lifespan.

Deliverables

Gearbox Services

Comprehensive wind turbine gearbox repair and refurbishment services including:

gearbox overhaul and exchange programs,
condition monitoring,
bearing upgrades,
borescope inspections,
emergency response support,
failure analysis,
and multi-brand gearbox servicing for onshore and offshore wind turbines.

Main Shaft Services

Specialist wind turbine main shaft refurbishment and engineering support including:

inspection and testing,
machining and precision repair,
bearing support solutions,
exchange shaft programs,
root cause analysis,
and full engineering assessments to improve turbine performance and reduce downtime.

Up-Tower Services

Specialist up-tower wind turbine maintenance and inspection services including:

turbine inspections,
corrective maintenance,
component replacement,
hydraulic and mechanical repairs,
alignment services,
crane-less repair solutions,
and rapid emergency response support for operational wind farms.

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Drivetrain AssessmentsMajor Component Supply, Repairs & Exchange

Case Studies

Explore how Galetech Group delivers sustainable energy solutions from concept to completion.

Drivetrain Assessments

Vestas V44 Valmet S3GHD Spare Drivetrain Solution

Optigear - Powered by Galetech Group successfully overhauled and stored a Vestas V44 Valmet S3GHD gearbox and main shaft assembly as a strategic spare drivetrain solution for a wind farm customer. The project demonstrates our ability to provide not only high-quality drivetrain refurbishment services, but also long-term spare asset storage and management solutions designed to minimise turbine downtime and maintain wind farm availability.

Case Study

Drivetrain Assessments

GE1.5 Wind Turbine Drivetrain Overhaul

Optigear, Powered by Galetech Group, successfully completed the sourcing, refurbishment, overhaul, and delivery preparation of a GE1.5 wind turbine drivetrain for a renewable energy customer. The project demonstrated Optigear’s full-service capability - from international asset sourcing through to tower-ready delivery and installation support. The drivetrain, consisting of the gearbox and main shaft assembly, was sourced from Germany following turbine decommissioning. After inspection and transport to Optigear’s specialist workshop in Dungiven, Northern Ireland, the unit underwent a complete mechanical overhaul to restore operational reliability and

Case Study

Major Component Supply, Repairs & Exchange

Vestas V39 Complete Nacelle Overhaul Project

Optigear - Powered by Galeetch Group demonstrated its large-scale wind turbine handling capability through the management and overhaul preparation of a complete Vestas V39 nacelle assembly. The project involved the removal of the gearbox, main shaft, and generator for complete overhaul before reinstallation into the nacelle and final delivery back to site.

Case Study

Major Component Supply, Repairs & Exchange

Vestas V52 Wind Turbine Gearbox Exchange Project

Successfully delivered a fully overhauled Vestas V52 wind turbine gearbox from stock on an exchange basis, enabling the customer to minimise turbine downtime and rapidly return the asset to operation. The project demonstrated our capability to provide fast-turnaround gearbox solutions backed by premium refurbishment standards, specialist component replacement, and complete logistics support.

Case Study

Project Gallery

FAQs

1. What does Major Component Supply, Repairs & Exchange include?
This service supports rapid recovery from major turbine failures by managing the supply, repair, and replacement of critical components such as gearboxes, generators, main shafts, yaw systems, blades, and large structural parts.

2. How do you minimize downtime during major component failures?
We develop repair or exchange plans, coordinate logistics, manage lifting operations, and oversee installation to restore turbines to operation as quickly and safely as possible.

3. What major turbine components do you support?
We manage repairs and replacements for gearboxes, generators, main shafts, yaw systems, blades, bearings, and other large or high-value turbine components, including transport and heavy-lift coordination.

4. How do you ensure quality and safety during major repairs?
We prepare detailed method statements, oversee QA processes, maintain safety documentation, and ensure all works meet OEM, regulatory, and site-specific requirements.

5. Do you investigate root causes and support warranty claims?
Yes. We conduct root-cause reviews following major failures and support warranty or supplier claims to help recover costs and reduce the risk of repeat failures.

6. What documentation and reporting do you provide?
We deliver full repair and exchange documentation, QA records, logistics reports, and performance summaries to ensure transparency, compliance, and informed asset management decisions.