Structural Features and Selection of Thrust Ball Bearing
1 Introduction
Thrust ball bearings are the most popular Bearings used in various machinery and equipment, mainly used to bear the axial load of the frame drive shaft, so that the axle and the bearing can move relative to each other along the axial direction. The axial load capacity of thrust ball bearings is lower than that of deep groove ball bearings, but they are more suitable for bearing axial loads.
2 Structural Features
Thrust ball bearings are mainly composed of seat rings, balls and cage. The basic structure is shown in the figure. The seat ring is divided into two types: with ring and without ring. The ring is used to keep the cage and balls at the proper level. The balls are arranged in a regular pattern between the inner and outer seat rings along the axial direction. The cage is used to keep the balls at a certain distance and to guide the balls. This type of bearing is suitable for applications where the axial load is larger than the radial load.
3 Selection Principles
When selecting a thrust ball bearing, the first thing to consider is the working environment and load conditions. If it is a highly corrosive environment, stainless steel or a special material should be chosen. The second important point is the bearing capacity. When calculating bearing capacity, the interference fit, the structure of the matching shaft and the matching housing must be taken into account. The third point to consider is the rotation speed of the bearing. Generally speaking, high speed bearings require higher accuracy and use special materials for the surface contact between the bearing and the shaft.
4 Conclusion
Thrust ball bearings are widely used in various machinery and equipment. When selecting a thrust ball bearing, it is important to select the right combination according to the specific application conditions. The selection should take into account the working environment and load conditions, bearing capacity and rotation speed.
