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Self-lubricating bearing

Self-lubricating bearings, also known as rolling bearings or plain bearings, are devices used to reduce friction and wear in mechanical parts. Self-lubricating bearings have better wear resistance and longer life than conventional bearings because they are self-lubricating, reducing reliance on external lubricants.

Self-lubricating bearings are mainly composed of two main parts: the bearing body and the lubricant. The bearing body is usually made of metal, plastic or ceramics, which has certain strength and wear resistance. Lubricant is a special lubricating material, usually solid or liquid, which can be released automatically when the bearing is running, forming a lubricating film to reduce friction and wear.

Lubricants for self-lubricating bearings can be divided into two categories: solid lubricants and liquid lubricants. Solid lubricants are usually composite materials composed of solid particles and lubricants, such as graphite, polytetrafluoroethylene, etc. Solid lubricants have good wear resistance and stability, and can maintain lubricating effects under high temperature and high pressure. A liquid lubricant is a high-viscosity grease or oil that forms a thin film within the bearing, reducing friction and wear.

Self-lubricating bearings have many advantages. First, they reduce energy consumption, since external lubricant supply and maintenance are no longer required. Secondly, they have better wear resistance and long life, and can work in harsh working environments, such as high temperature, high pressure and low temperature, etc. In addition, they reduce noise and vibration, increasing the efficiency and reliability of mechanical systems.

However, self-lubricating bearings also have some limitations. First, their lubricating effectiveness is affected by external factors such as temperature and pressure. Under extremes of temperature and pressure, the lubrication effectiveness of self-lubricating bearings may decrease, resulting in increased friction and wear. Second, self-lubricating bearings are expensive to manufacture and maintain, requiring special materials and processes.

In short, self-lubricating bearings are an advanced mechanical device that can reduce friction and wear and improve the efficiency and reliability of mechanical systems. With the continuous advancement of science and technology, the performance of self-lubricating bearings will be further improved, and the application range will be wider.

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