Sliding bearings, also known as bushings, sleeve bearings, or journal bearings, are a type of friction component that bears loads when it contacts and moves relative to another part. Its main working principle is to support and transmit the load of the shaft by relying on friction. Sliding bearings are essentially composed of a bush and a journal; the bush is a sleeve installed in external equipment, while the journal is a cylindrical part installed on the shaft. The inside of the bush is usually coated with lubricating oil or grease to reduce frictional resistance and wear.

The main uses of sliding bearings include supporting rotating shafts in various machines and equipment, such as engines, pumps, and turbines; reducing friction to make the contact surfaces between rotating parts smooth and decrease energy loss; adjusting axial and radial clearances to ensure the precision and stability of motion between rotating components; reducing noise; and enhancing wear resistance. This is achieved by using high-quality, wear-resistant materials to enhance their lifespan and reliability.

Sliding bearings come in various types, including but not limited to standard cylindrical bearings, flanged bearings, thrust washers, and flanged washers, as well as various shapes of sliders. These bearings can also be custom-designed to meet specific shape, feature, and size requirements. Sliding bearings are widely used in various mechanical devices, such as engines, wind turbines, and hydraulic turbines.

In summary, sliding bearings play a key role in the normal operation of mechanical equipment, supporting and transmitting the load of the shaft through their unique working principle and design, extending the equipment’s lifespan, and optimizing its performance.