

Renewable Energy Sector
At Llewellins Gears, we specialise in the design, manufacture, and refurbishment of wind turbine gearboxes, precision gears, splines, and other critical components for the renewable energy sector. As an ISO 9001:2015 certified manufacturer, we ensure that our entire production process—from manufacturing to testing—meets the highest international standards.
Our ISO certification reflects our commitment to providing components that are not only highly reliable but also engineered to perform efficiently in the demanding and sustainable environments of renewable energy systems.

Capabilities in Renewable Energy Gear and Spline Manufacturing
Wind Turbine Gearbox Refurbishment
We provide gearbox refurbishment services for wind turbines to help extend their operational lifespan. Our services include inspecting, cleaning, reconditioning, and reassembling turbine gearboxes to meet OEM specifications. We focus on restoring the gearbox’s performance and ensuring it operates at peak efficiency, which is essential for maintaining high productivity and reliability in wind energy systems.
Renewable Energy Gears and Splines
We manufacture high-performance gears, splines, and other components for various renewable energy applications, including wind turbines, solar tracking systems, and hydroelectric generators. Each component is designed to meet the rigorous demands of the renewable energy sector, ensuring optimal performance, durability, and reliability in continuous operation under variable environmental conditions.
Other Renewable Energy Components
In addition to gears and splines, we produce a wide range of essential components such as shafts, couplings, bearings, and seals. These parts support the efficient and reliable operation of renewable energy systems, whether in power generation, energy storage, or energy transmission applications.
Renewable Energy Equipment Support
Our expertise extends to components used in renewable energy equipment, such as wind turbines, hydroelectric systems, and solar energy devices. We offer precision gears and splines that ensure these critical systems operate efficiently and reliably, even under demanding conditions like high torque and fluctuating environmental factors.
Commitment to ISO 9001 Quality Control
As an ISO 9001-certified manufacturer, we adhere to strict quality management processes throughout production. This ensures that all our gears, splines, and components meet renewable energy-specific standards, providing exceptional performance and durability in the most challenging environments.
Key Renewable Energy Gear and Spline Types
- Spur Gears – Perfect for applications requiring efficient power transmission between parallel shafts in renewable energy systems.
- Helical Gears – Designed for smooth, quiet operation in high-speed, heavy-load applications such as wind turbine drivetrains and hydroelectric generators.
- Bevel Gears – Essential for transmitting power between shafts set at various angles, crucial for the efficient operation of renewable energy systems.
- Worm Gears – Compact and highly efficient, ideal for tight spaces requiring high torque and minimal maintenance in energy generation equipment.
- Planetary Gears – Used in high-efficiency, lightweight power transmission systems for wind turbines, hydro generators, and solar tracking systems.
- Splines – Vital for transferring torque between connected components, ensuring secure and reliable connections for renewable energy equipment, such as wind turbine blades and generator shafts.
Materials Tailored for Renewable Energy Durability
Our gears and splines are crafted from advanced, high-performance materials such as stainless steel, titanium, and specialised alloys. These materials are selected to withstand extreme conditions, including high mechanical stress, temperature fluctuations, and continuous operation typical in renewable energy environments.
Precision Manufacturing for Critical Applications
We utilise precise manufacturing techniques in gear cutting, spline production, and finishing to meet the strictest tolerances. Every part is designed to endure the unique stresses of renewable energy systems, ensuring reliable performance and durability over long service lifespans.

Provide a first class service from a long standing professional company run by experienced and proper people. Many thanks for the parts remade for my vintage Peugeot Bebe.