Generator repair and rewind, main bearing and shaft repair, remanufacturing and uptower gearbox repair, matched to specialist drivetrain providers across Australia.
Request a QuoteMatched to vetted providers in your state. No cost, no obligation.
The drivetrain is the most expensive thing on a wind turbine to fix. A failed gearbox, main bearing or generator can stop a machine for weeks and consume a large share of an owner's annual maintenance budget. We match wind farm owners, asset managers and EPC contractors to specialist providers who repair, rewind, exchange and remanufacture these components.
Whether a fault can be fixed uptower inside the nacelle or needs a downtower exchange with a crane, we route your enquiry to providers who cover your turbine platform, hold the right tickets and can reach your site. Many run generator exchange programs and carry remanufactured gearboxes to cut downtime.
Tell us the make, model, turbine count and the symptom once. Vetted providers respond with availability and pricing, and there is no cost or obligation to owners.
Tell us about your turbine and the fault. We match your enquiry to specialist gearbox, generator and drivetrain providers who cover your platform and state.
Your enquiry is sent to vetted service partners who may contact you directly. We never charge owners or asset managers.
Global Wind Organisation trained crews across the network.
Partners aligned with CEC codes of conduct.
Out-of-warranty support for major OEM platforms.
HV tickets, rope access (IRATA) and heavy-lift credentials.
Sources & licences on the image credits page.
The power train turns rotor torque into grid-ready electricity, and when it fails the bill is large. Catching a drivetrain fault early is the single highest-value thing an owner can do.
As Australia's wind fleet ages past the five-to-ten-year mark, drivetrain failures become the dominant cost driver. A Vestas, GE Vernova or Suzlon machine running out of warranty will, over its life, spend more on gearbox, main bearing and generator events than on any other scope. The components are heavy, the access is hard, and a downtower exchange ties up a crane. That is why owners pay for condition-based maintenance: to turn a sudden failure into a planned, lower-cost repair. We match you to providers who do that repair work well, and who carry the remanufactured stock to do it fast.
The gearbox steps rotor speed up to generator speed through planetary and helical stages, and it lives a hard life under variable load. Common failure modes are bearing spalling, micropitting on gear teeth, broken or cracked gears, and the premature bearing failure known as white etching cracks. Providers in our network start with a gearbox inspection and borescope to grade the damage, then recommend the lowest-cost path that restores reliability.
Where damage is confined to accessible bearings, seals or filters, an uptower gearbox repair lets a crew work inside the nacelle without a crane, which is far cheaper and faster. Where gears or the planetary stage are damaged, the gearbox comes down for a downtower repair or a straight exchange. A reconditioned or remanufactured gearbox is often fitted while the failed unit is rebuilt and returned to a pool, smoothing spares spend across a fleet. The heavy lift itself is organised through our main component exchange providers.
Routine oil sampling, particle counting and debris monitoring reveal wear long before it stops a turbine, and a borescope lets a technician grade gear and bearing surfaces without a full strip-down. Combined with vibration data from condition monitoring, this is how a developing gearbox fault is caught and planned. Our deeper wind turbine gearbox guide explains the stages and failure modes in plain terms.
The generator converts mechanical power into electricity, and in most modern Australian turbines it is a doubly-fed or full-converter machine running at high speed. Faults range from bearing wear and cooling problems to insulation breakdown in the windings. A generator repair may be as simple as a bearing and slip ring service, or as involved as a full rewind where the stator or rotor windings are stripped and replaced on the bench.
Because a rewind takes weeks, specialist providers run a generator exchange program: a pool of remanufactured units sits ready, a serviceable exchange generator is fitted when one fails, and the faulty unit is rebuilt and returned to the pool. This cuts downtime from weeks to days and is the standard approach for fleets of common platforms. Our wind turbine generator guide covers the generator types and why rewinds happen.
The drivetrain is more than the gearbox and generator. Slip rings carry current and signals to the rotor and wear or arc over time. The high-speed coupling between gearbox and generator absorbs torque spikes and misalignment, and the mechanical brake holds the rotor for service. Providers in our network repair and replace these items in the same visit, and check converter and cooling health while the drivetrain is open.
The main bearing and main shaft carry the entire rotor load into the drivetrain, so a main bearing failure is one of the most serious and costly events a turbine can suffer. Early symptoms show up as temperature rise, grease contamination and vibration. Where caught early, a main bearing can be regreased, reconditioned or exchanged uptower on some platforms; where it has spalled or seized, a downtower main-component exchange with a crane is needed. Specialist providers assess the main shaft for cracking and fretting at the same time and remanufacture or replace as the condition dictates.
Not every bearing fault is the same, and the repair path depends on the mode. Classic rolling-contact fatigue produces spalling, where fragments break away from the raceway. Micropitting is a surface distress that roughens gear flanks under thin oil films. White etching cracks are a microstructural failure where the bearing steel changes phase and cracks axially, often at a fraction of rated life, and are a leading cause of premature gearbox bearing replacement in wind service. Providers in our network grade the mode by borescope and oil debris, then advise whether an uptower bearing swap, a downtower gearbox exchange or a full remanufacture is the right call.
Drivetrain components, repair procedures and remanufactured stock differ by platform, so we match providers with real experience on your machines, whether that is Vestas, GE Vernova or Suzlon. Heavy components and crews need to reach site, so coverage is organised by state: South Australia, Victoria and Queensland among them. When a repair needs fresh parts, our parts and spares providers source gears, bearings, generators and remanufactured assemblies to suit your fleet.