Plain bearings are a type of bearing that consists of a plain cylindrical bore and a solid cylindrical shaft that rotates within the bore.

Plain bearings are simple to design and manufacture, can operate at high speeds, are relatively compact, and have a long service life.

There are many different types of plain bearings, including journal bearings, thrust bearings, and linear bearings.

The type of plain bearing you select will depend on the specific requirements of your application, such as the load, speed, and environment.