NTN tapered roller bearings in the operation of the vibration phenomenon causes

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In general, the rolling bearing itself does not produce noise. Usually feel "NTN tapered roller bearing noise" is in fact the bearing directly or indirectly generating vibration sound effect with the surrounding structures. This is why many noise prob lems can be treated as vibration problem relates to the entire NTN tapered roller bearing applications.
Excitation load changes in the number of rolling element
When a radial load is loaded on a imported bearings, the number of rolling bodies of the bearing load in operation will be a slight change, i.e. :2 -3-2-3 .... This causes the offset of the load direction. The resulting vibration is unavoidable, but by axially pre-loading to reduce, and loaded on all the rolling bodies (not for the cylindrical roller bearing).
Member waviness
NTN Tapered Roller Bearings NTN tapered roller tight fit between the bearing ring and bearing or drive shaft, the circle may cooperation deformed shape of the adjacent parts. If a deformation occurs, in operation, it may lead to vibration. Therefore, the bearing block and the drive shaft for machine processing to the required tolerances is very important.
Partial damage
, A small part ofNTN bearig raceways and rolling elements may be damaged due to the operation or installation errors. In operation, the rolling across the damaged NTN tapered roller bearing member will produce a particular frequency of vibration. Vibration frequency analysis can identify the damaged bearing member.
The vibration behavior of the applications
In many applications, NTN tapered roller bearing has the same stiffness and the stiffness of the surrounding structure. Due to this feature, as long as the correct choice of NTN tapered roller bearings (including the pre-load and clearance) in the application configuration, it is possible to reduce the vibration applications.
There are three ways to reduce vibration:
- Remove from the application of critical incentive vibration;
- Suppressing resistance stimulate parts and resonance between components of the critical excitation vibration;roller bearing company
- Change the stiffness of the structure, thus changing the critical frequency.