

Aerospace Sector
At Llewellins Gears, we specialise in the design and manufacture of precision gears, splines, and other critical components for the aerospace 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 safety-critical environments of aerospace systems.

Capabilities in Aerospace Gear and Spline Manufacturing
Aerospace Gears and Splines
We produce high-performance gears, splines, and other components for a wide range of aerospace systems, including aircraft engines, flight control systems, landing gear, and more. Each component is designed to meet the stringent requirements of the aerospace sector, ensuring optimal performance, durability, and safety in critical applications.
Other Aerospace Components
In addition to gears and splines, we manufacture a range of essential aerospace components such as shafts and couplings. These parts are vital for the smooth operation of aircraft and aerospace systems, ensuring they can withstand the demanding conditions of flight, high speeds, and environmental factors.
Commitment to ISO 9001 Quality Control
As an ISO 9001-certified manufacturer, we apply rigorous quality management practices across every stage of production. This ensures that all our gears, splines, and components meet the highest aerospace standards for performance, durability, and safety.
Key Aerospace Gear and Spline Types
- Spur Gears – Ideal for power transmission between parallel shafts, ensuring reliable operation in aerospace systems.
- Helical Gears – Designed for smooth, quiet operation in high-speed, heavy-load applications, commonly found in aircraft engines and control systems.
- Bevel Gears – Crucial for transmitting power between shafts set at various angles, enabling efficient operation in diverse aerospace mechanisms.
- Worm Gears – Compact and highly efficient, perfect for space-constrained applications requiring high torque and minimal maintenance.
- Planetary Gears – Used in lightweight, high-efficiency power transmission systems in aerospace equipment, offering enhanced durability and performance.
- Splines – Essential for transferring torque between connected components, ensuring secure and reliable connections in aerospace systems like engines and landing gear.
Materials Tailored for Aerospace Durability
Our gears and splines are made from high-strength materials such as stainless steel, titanium, and specialised alloys. These materials are selected for their ability to withstand extreme conditions, including high stress, temperature variations, and vibration, which are common in aerospace environments.
Precision Manufacturing for Critical Aerospace Applications
We utilise precise manufacturing techniques in gear cutting, spline production, and finishing to meet the strictest tolerances. Every part is manufactured to withstand the unique stresses encountered in aerospace systems, ensuring safe and reliable performance in critical applications.

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.