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The NSK brand self aligning bearing abnormal damage measures

303 Published by admin Jun 21,2018

Contact fatigue failure means that the working surface of the NSK self aligning bearing is subject to alternating stress and fails. Contact fatigue spalling occurs on the working surface of the bearing and is often accompanied by fatigue cracks. It is first generated from the maximum alternating shear stress below the contact surface and then spreads to the surface to form different spalling shapes such as pitting or pitting. Peel off flakes into shallow flakes. Due to the gradual enlargement of the spalling surface, it often spreads to deep layers to form deep spalling. Deep exfoliation is the source of fatigue in contact fatigue failure.self aligning bearing NSK brand
Abrasion failure refers to the failure caused by the relative sliding friction between the surfaces resulting from the constant wear of the metal on the working surface. Continued wear and tear will cause gradual damage to the NSK self aligning bearing parts and ultimately lead to loss of dimensional accuracy of the aligning ball bearings and other related issues. The wear of the crucible may affect the shape change. With the increase of the clearance and the change of the topography of the work surface, the lubricant may be affected or the pollution may be caused to a certain extent, resulting in the complete loss of the lubricity function, thus causing the bearing to lose its rotation accuracy or even to operate normally.
1, bearing maintenance, overhaul, and abnormal treatment
In order to maintain the original performance of self-aligning ball bearings in a good condition for as long as possible, it is necessary to maintain, repair, and prevent accidents before they occur, ensuring the reliability of operation and improving productivity and economy. Maintaining the operating standards that best correspond to the mechanical operating conditions is performed regularly. Contents include inspections to monitor operating conditions, replenishment or replacement of lubricants, and periodic disassembly.
As an in-service inspection item, there are rotation noise, vibration, temperature, and lubricant status of the NSK self aligning bearing.

NSK brand self aligning bearing
2, bearing damage and countermeasures
In general, if NSK self aligning bearing is used correctly, they can be used until the fatigue life is reached. However, there will be accidental premature damage and impatience. This early damage, as opposed to the fatigue life, limits the use of quality known as failure or accident. Due to inadvertent installation, use, and lubrication, foreign matter that has intruded from the outside is not sufficient for the thermal effects of the shaft and housing.
As to the damage state of the bearing, for example, the squeezing of the collar of the roller bearing, it can be considered as a cause. The lubricant is insufficient, the lubricant is not suitable, the oil supply and drainage structure is defective, the foreign material intrusion, the alignment ball bearing installation error, the shaft If the deflection is too large, these reasons will coincide.
Therefore, it is difficult to know the true cause of the damage by only investigating bearing damage. However, if you know the bearing use machinery, conditions of use, the structure around the NSK self aligning bearing, understand the situation before and after the accident, combined with self-aligning ball bearing damage status and several reasons, we can prevent the recurrence of similar accidents.

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Contact: Grace
Email: ntn@llhbearing.com
Skype:+8618668903871
MP/Whatsapp: 008618668903871
Wechat:GraceXu1314

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