PRODUCT
Bearing operating common troubleshooting measures
by:Waxing
2020-09-02
One, bearing faults have defects and overload causes two factors, when the loads more than material strength limit fracture, fracture caused by parts called overload will occur in the process of bearing running overheating organizations and local burns and other defects, defect caused by fracture.
Two, bearing in the process of running, sometimes between the bearing surface into the external hard particles or hard foreign body or abrasive dust on the surface of the metal, it can cause furrow is bearing abrasion, inside these hard foreign body through into the bearing lubrication medium, with the continuous operation of bearing, the local friction heat production, easy to cause the friction surface phenomena, local micro welding deformation and friction of partial melting may even happen, finally cause occlusion phenomenon.
Generally speaking, the bearing itself is not produce noise.
What we mean by noise is, in fact, bearing, directly or indirectly, with the surrounding structure vibration sound effects.
Due to loading quantity change of vibration roller when a load on a bearing radial load, the number of rolling element bearing load will be a slight change in the operation, i. e. , 2 -
3 -
2 -
3.
。
。
。
This caused the load in the direction of migration.
The resulting vibration is inevitable, but can be by axial preload to ease, loading in all rolling body (
Do not apply to the bearing of the cylindrical roller bearing)
。
The waviness on bearing ring of the self-contained parts or close coordination between the shaft and bearing ring with adjacent components are likely to match the shape and deformation.
If there is a deformation, can produce vibration in the operation.
Therefore, the bearing and the shaft are machined to the required tolerance is very important.
Local damage due to the operation or installation errors, a small number of bearing raceway and rolling element may be damaged.
In the running, rolled the damaged bearing parts will produce a particular vibration frequency.
Vibration frequency analysis can identify the damaged bearing parts.
The vibration behavior of applications in many applications, the sliding bearing stiffness with the surrounding the stiffness of the same structure.
Due to this feature, as long as the correct choice bearing (
Including the preload and clearance)
And its application in the configuration, it is possible to reduce the application of vibration.
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