Thrust bearings are generally composed of two thrust washers or more thrust washers and several rolling elements. Generally, thrust washers are divided into shaft sheets and seat sheets. The most common types of rolling elements are iron or copper. The cage is combined into a whole. Thrust bearing is a special bearing used to bear the axial force, that is, the bearing of the force in the direction parallel to the axis. 

The thrust bearing is a dynamic pressure bearing. To make the bearing work normally, the following conditions should be met:

  1. The lubricating oil has a viscosity;

  2. There is a certain relative speed between moving and static bodies;

  3. The two surfaces in relative motion are inclined to form an oil wedge;

  4. The external load is within the specified range;

  5. Enough oil.