What is the primary function of the thrust bearing in a main engine?

What is the primary function of the thrust bearing in a main engine?

• A. Support axial loads
• B. Control temperature
• C. Regulate fuel flow
• D. Maintain pressure

Answer: (A)

The primary function of the thrust bearing in a main engine is to support axial loads. Thrust bearings are specifically designed to handle the forces acting along the axis of the shaft, which are produced during the operation of an engine, particularly in marine environments where propeller thrust is a significant factor. These bearings ensure that the rotating components within the engine can handle the thrust generated due to the propeller pushing against the water, thereby preventing excessive wear or damage to the engine components. By absorbing these axial loads, the thrust bearings play a crucial role in maintaining the alignment and functionality of the engine system, providing stability and support necessary for efficient operation. The other options do not align with the main function of the thrust bearing; they pertain to different operational aspects of the engine rather than the primary role of handling axial loads.

The primary function of the thrust bearing in a main engine is to support axial loads. Thrust bearings are specifically designed to handle the forces acting along the axis of the shaft, which are produced during the operation of an engine, particularly in marine environments where propeller thrust is a significant factor.

These bearings ensure that the rotating components within the engine can handle the thrust generated due to the propeller pushing against the water, thereby preventing excessive wear or damage to the engine components. By absorbing these axial loads, the thrust bearings play a crucial role in maintaining the alignment and functionality of the engine system, providing stability and support necessary for efficient operation.

The other options do not align with the main function of the thrust bearing; they pertain to different operational aspects of the engine rather than the primary role of handling axial loads.