Sliding bearings

Sliding bearings are bearings that work under sliding friction, used in fast rotating rotor machines or planetary gears. The sliding bearing works smoothly, reliably, and without noise. Under the condition of liquid lubrication, the sliding surface is separated by lubricating oil without direct contact, which can also greatly reduce friction loss and surface wear, and the oil film also has a certain ability to absorb vibration. The part of the shaft supported by the bearing is called the journal, and the part that matches the journal is called the bearing bush. The theoretical models of the bearing should precisely describe real operating conditions of the bearing. In initial calculations, simplified models are often used. This chapter describes the design process for sliding bearings, depicting the particular design stages in the form of a structural chart with calculation examples, as well as design examples and solved/unsolved problems. This chapter can be used as teaching material for courses in machine design for mechanical and industrial engineering majors in colleges and universities, and can also be used as a reference for scientific and technical personnel engaged in scientific and engineering calculations.