Bearings are widely used in the aerospace field, mainly in the following aspects:

1. Engine system: Bearings play a vital role in aircraft engines. The high-speed rotating parts of the engine, such as turbines, compressors and crankshafts, are inseparable from the support and operation of bearings. These bearings need to have high heat resistance, high stiffness and low friction characteristics to meet operating conditions and reliability requirements.

2. Landing gear system: Bearings play a supporting and operating role in the aircraft's landing gear system. The main components of the landing gear, such as wheels, tires, brakes and suspension systems, all require bearings to provide stable support and rotation performance. These bearings need to have high load carrying capacity, corrosion resistance and long life characteristics to ensure the safety and reliability of the aircraft during takeoff and landing.

3. Flight control system: Bearings play an important role in the aircraft flight control system. For example, in aircraft control surfaces such as ailerons, elevators, and rudders, bearings are used to provide rotational support and low-friction movement. These bearings need to have high precision, high stiffness and low friction to ensure the sensitivity and accuracy of the flight control system.

In general, the application of bearings in the aerospace field is very critical. High-precision and high-reliability bearings can meet working conditions and reliability requirements, providing important support for the safety, performance and life of aircraft.