Date: 2013-08-20

Radial internal clearance of the bearing impact on operation vibration

Because the manipulation or installation errors, raceways and the move may be jeopardized. Running, scroll past the damaged bearing component generates a specific vibration frequency. Vibration frequency analysis to identify the damaged bearing part.
Vibration behavior of applications: in many applications, the stiffness of bearing stiffness and structure in the vicinity of the same. Because of this feature, as long as the accurate selection of bearing (including preload and clearance) and its application in the configuration, it is possible to reduce vibrations in the application.
(1) during the measurement, shall ensure the ball falling into the ditch;
(2) before the closure of closed type bearings measurement;
(3) using charge transfer devices, numerical values should be reduced by increased loading caused by clearance.
(4) for multiple-row bearings, each clearance pass take the arithmetic mean of the clearance as a radial clearance of bearings.
(5) as far as possible using special instruments and measurements;
(6) using the hand measurement measurements have a higher measure of skills required. This method of measurement error is large, especially when clearance is marginalized, prone to error, in which case the measure shall prevail;
(7) when the feeler gauge measuring, as stipulated in the standard operation, shall not be used on the roller feeler gauge rolling past methods of measurement;
Parts: tie between the bearing ring and the bearing seat or shaft key cases, bearing rings and shape matching and deformation of adjacent parts. If the season of deformation, running may produce vibrations. Therefore, and drive shaft housings are machined to the tolerances required are important.
Because of variations in the number of loads to move produce vibration: when a radial load when the load on a bearing, the bearing load moving number may vary slightly in the run, which it has caused the offset direction of load. The resulting vibration is inevitable, but can be mitigated through axial preload, load in all moving bodies (not for cylindrical roller bearings).

 

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