The three types of loads placed on bearings are which of the following?

The correct answer identifies the three types of loads that are typically applied to bearings: radial, thrust, and combination. These loads are fundamental concepts in bearing design and application.

Radial loads act perpendicular to the axis of the shaft and are the most common type of load encountered in rotating machinery. They occur due to forces transmitted from components that are not aligned perfectly with the axis of rotation, leading to stress on the bearing surfaces.

Thrust loads, on the other hand, are parallel to the axis of the shaft and occur when there is a force trying to push or pull the shaft along its length. This can happen in applications where axial movement is involved, such as in screw drives or when dealing with gear systems that transmit force along the shaft.

Combination loads refer to situations where both radial and thrust loads are acting together. Many practical applications will experience a mix of these loads, and bearings are often designed to accommodate such combinations to ensure longevity and operational stability.

Understanding these load types helps in selecting the appropriate bearings for specific applications, which is critical for maintaining equipment reliability and performance.