/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Vibrations in SKF imported bearings often result from changes in the number of loaded rolling elements. When a radial load is applied, the number of rolling elements that carry the load can vary slightly during operation, leading to shifts in the direction of the load. These oscillations are natural and unavoidable, but they can be reduced through axial preloading. This method applies to all rolling elements except for cylindrical roller bearings.
The waviness of the bearing components plays an important role in their interaction with the housing or the shaft. The bearing ring may deform slightly to match the shape of the adjacent component. If this deformation occurs, it can cause vibrations during operation. Therefore, it's crucial to machine the housing and drive shaft to precise specifications to ensure proper fit and function.
Additionally, partial damage caused by operational issues or equipment failure can lead to small defects on the raceways or rolling elements. As these damaged parts pass through the bearing during operation, they generate specific vibration frequencies. By analyzing these frequency patterns, engineers can identify which components are affected and take corrective action.
In practical applications, the oscillatory behavior of bearings is a common phenomenon. The stiffness of the bearing is similar to that of its surrounding structure. To minimize vibrations, it's essential to choose the right bearing (including correct preload and clearance) and ensure proper installation and maintenance.
There are three main approaches to reducing bearing vibrations: eliminating the source of excitation, suppressing resonance between vibrating and resonant components, and adjusting the stiffness of the system to change the critical frequency.
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