Oil free bearing is a new type of lubricating bearing which has the characteristics of both metal bearing and oil-free bearing. It is loaded by metal matrix and lubricated by special solid lubricating material. It has the characteristics of high bearing capacity, impact resistance, high temperature resistance, and strong self-lubricating ability. It is especially suitable for heavy load, low speed, reciprocating or swing and other occasions where it is difficult to lubricate and form oil film, and it is not afraid of water erosion and other acid erosion. It is widely used in metallurgical continuous casting machine, rolling equipment, mining machinery, ships, steam turbines, water turbines, injection molding machines and equipment production lines.

The self-lubricating bearing is divided into composite self-lubricating bearing, solid inlaid self-lubricating bearing, bimetal self-lubricating bearing and special material self-lubricating bearing. Different self-lubricating bearings can be selected according to different purposes and industries.

Composite bearing is a kind of bearing which works under sliding friction. The composite bearing is stable, reliable and noiseless. The application of composite bearing is usually under the condition of low speed and heavy load, or it is difficult to maintain and add lubricating oil.