3-Piece Can Making Line,Can Making Line,Tin Can Making Machine Production Line,Tin Can Production Line Zhoushan Longwen Machinery Technology Co., Ltd. , https://www.longwenmachinery.com
Bearing stress—like human stress—can have serious consequences if not managed properly. When selecting a bearing, it's crucial to ensure it can handle the load without becoming "overloaded" or "stressed out." This means understanding and matching the bearing’s load capacity with the actual forces it will encounter during operation.
If the applied load exceeds the bearing's capacity, it can lead to accelerated wear, plastic deformation, or even catastrophic failure, significantly shortening its lifespan. Two main types of stress should be considered: static and dynamic.
Static stress occurs when a bearing is either stationary or moving very slowly, but still under a load—whether that load is constant or changing. Even a small load can cause permanent damage if the bearing isn't designed for it, potentially flattening rolling elements and leading to premature failure.
Dynamic stress, on the other hand, happens when the bearing is in motion, such as during rotation. A heavy or fluctuating load can cause fatigue in the material, leading to cracks, flaking, and ultimately, failure due to material degradation over time.
There are several theories about what causes fatigue failure in bearings. The maximum shear stress theory suggests that the primary cause is the highest shear stress within the bearing. The distortion energy theory proposes that fatigue results from stresses across a region rather than at a single point. The alternating shear stress theory, however, is the most widely used in engineering calculations. It states that fatigue occurs due to repeated orthogonal stresses acting on the bearing.
The fatigue life, or rating life, is defined as the number of revolutions or hours a bearing can operate before 10% of a group of identical bearings show signs of material fatigue. As the load increases, this life typically decreases.
At Emerson Bearing, our team of experts understands the importance of proper bearing selection and maintenance. We're here to help you avoid unnecessary stress on your equipment and ensure optimal performance. Whether you need guidance on load capacity, material selection, or application-specific advice, we're ready to assist. Visit our Catalog and Technical Toolbox pages today to learn more about how we can support your bearing needs. Let us help you keep your systems running smoothly and efficiently.