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杭州溜冰鞋

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Operación de verificación de rodamientos  

2013-03-14 17:11:58|  分类: 技术 |  标签: |举报 |字号 订阅

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SKF bearings after installation, in order to check for proper installation, to running inspection. Small machinery can be rotated by hand, to confirm whether the rotation is smooth. Check the project caused by foreign body, scars, indentation dysfunctional, due to poor installation, mounting process arising out of the bad moment is not stable, because the clearance is too small, installation error, sealing friction caused by the force is too large and so on. If there is no anomaly can begin power operation.

Large machinery can not be manually rotated, so the no-load starting immediately after power cut, mechanical idling, check whether the vibration, noise, rotating parts are in contact and so on, confirmed no abnormal, into the dynamic operation.

Power operation, from the no-load speed, slowly increased to the rated operating condition. Test run of issues, whether there is abnormal sound, bearing temperature, lubricant leakage or discoloration etc.. If abnormal, should immediately suspend the operation, inspection machinery, necessary to remove the bearing inspection.

FAG bearing temperature, generally according to the external temperature of the bearing seat that. But the direct measurement of the bearing outer ring with oil hole temperature more accurately. Bearing temperature, from a running start rising, usually 1~2 hours after the temperature stability. If the bearing mounting bad, the temperature will rise sharply, abnormal high temperature. The reason such as excessive lubricant, the bearing clearance is too small, poor installation, seal friction is too large. High-speed rotation of the occasion, lubrication bearing structure, the choice is also the cause of the error.

Turn tone with a stethoscope to check NSK bearing, a metallic noise, strong noise, irregular, abnormal sound. Due to poor lubrication, shaft or housing bad precision, bearing damage, foreign intrusion etc..

The common faults of bearing:

1, the tile surface corrosion: spectral analysis found that the non-ferrous metal element concentration anomaly; there are many nonferrous metal components of the sub-micron wear particles in lubricant iron spectrum; water exceed the standard, exceed the standard value.

2, the journal surface strain: iron spectrum of iron cutting abrasive or black oxide particles, temper metal surface.

3, the journal surface corrosion: spectral analysis of iron concentrations found abnormal, submicron particles have a lot of Ferrographic iron composition of lubricating oil water content exceed the standard value, or exceed the standard.

4, the surface strain: iron spectrum is found to have a cutting abrasive, abrasive composition for non-ferrous metals.

5, tile back fretting wear: spectral analysis of iron concentrations found abnormal, many of Ferrographic submicron wear particles of iron components, oil water and acid value anomaly.

In liquid lubrication conditions, separated by sliding surface oil without direct contact, but also can greatly reduce the friction loss and surface abrasion, oil film also has a certain vibration absorption capacity

来源http://www.skf-nsk-bearings.com/

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