What is the primary function of a thrust bearing?

The primary function of a thrust bearing is to hold the shaft axially and prevent rubbing. This bearing is specifically designed to manage the axial loads that act on rotating machinery, such as turbines or engines, which can arise from various forces during operation.

By maintaining the proper position of the shaft along its axial axis, the thrust bearing prevents the shaft from moving too far in either direction. This stabilization is critical for ensuring the longevity and functionality of the components involved, as excessive movement could lead to unwanted contact between parts, resulting in wear, damage, or malfunction.

While supporting the weight of the shaft, cooling turbine components, or maintaining steam pressure are important functions in various contexts, they do not specifically address the primary role of the thrust bearing in relation to managing axial loads and preventing contact between rotating parts.