Analysis of SKF bearing oscillation

Source: China Bearing Network Time: 2013-06-08

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Excitation due to the change in the number of loaded tumblers When a radial load is applied to a SKF bearing; the number of tumblers carrying the load will be slightly modified during operation; ie: 2-3-2-3. . . . This causes a shift in the direction of the load. The resulting oscillations are unavoidable; however, they can be relieved by axial preloading; they are applied to all rolling bodies (not for cylindrical roller bearings).
The waviness of the part is in close cooperation between the SKF bearing ring and the SKF bearing seat or the drive shaft; the SKF bearing ring can be deformed in cooperation with the shape of the adjacent part. If it is deformed, it can oscillate during operation. Therefore, it is important to machine the SKF housing and drive shaft to the required public service.
Partial damage due to handling or device failure; a small number of SKF bearing raceways and roll bodies can be damaged. During operation; a specific oscillation frequency occurs when rolling over damaged SKF bearing components. The oscillation frequency profile can identify damaged SKF bearing parts.
The oscillating action in the use case is used in many applications; the stiffness of the SKF bearing is the same as the stiffness of the surrounding layout. Because of this feature; only the SKF bearing (including preload and clearance) and its equipment in use are properly selected; Have the ability to reduce the oscillations in use.
There are three ways to reduce the oscillation:
C removes the critical encouragement oscillation from use,
C suppresses the critical excitation oscillation between the agitating component and the resonant component,
C changes the stiffness of the layout; then changes the critical frequency.

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