There are many kinds of aircraft bearings. Recently, bearing systems have become more complex and require higher reliability and quality control in response to customer demands for lower weight, less environmental pollution and higher performance. Design Theory and industry trend of jet engine. Demand for and sales of commercial aircraft are growing steadily as emerging markets grow rapidly and low-cost airlines expand globally. All over the world, we provide various solutions to various customers in the aerospace industry, these include bearings, seals, tie rods, struts, precision spring units and fly-by-wire controls for airframes, aero-engines and gearboxes. Ceramic bearings in harsh environments can operate at high temperatures and under poorly lubricated conditions. Resilient seals and devices protect bearings or other various applications such as rotating swashplates, gear boxes... We have the widest range of aerospace solutions available for even the most polluted environments, combined with your needs for visual control or maintenance-free requirements, to provide you with the most suitable solutions. Energy efficiency, for customers, reducing the weight of the aircraft helps reduce fuel consumption and increase the payload. This is a major part of the cost-effectiveness of operations. It helps aircraft designers reduce the weight of multiple systems and subsystems, thereby reducing fuel consumption. In addition to reducing fuel consumption, we offer weight-reduction solutions that help increase payload, extend flight range, and reduce total operating costs without compromising safety and performance. These solutions are now being applied to some demanding aircraft, significantly reducing costs for airlines. Combination of functions combination of functions results in a significant reduction in the number of components used worldwide, resulting in weight reduction and packaging savings. Support is therefore being provided for the production of more sustainable aircraft by improving existing applications. Lightweight Aerospace Technology helps to reduce weight and produce more sustainable solutions by reducing the number of components in global applications, replacing hydraulic systems with line-control systems, and developing ways to use lightweight materials.