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FAG rolling bearing fault diagnosis technology

Date:2011-12-30 From:SKF bearings

FAG rolling bearing fault diagnosis technology and quality attention factors

First: Vibration diagnosis technology
  Bearing components work surface appear fatigue peel, impress or local corrosion, FAG bearings operation will be cyclical pulse signal. These periodic signals can be purchased in a housing of the sensor (speed type or acceleration type) to receive, based on the analysis of the vibration signal of the bearing fault diagnosis.
  Features: vibration diagnosis technology application widely; Can realize the online monitoring; Diagnosis fast, diagnosis theory has mature.
Application: suitable for special in rotating machinery of the bearing fault monitoring.

Second, Iron spectral diagnostic technique
  FAG bearings wear particle and its working conditions bearings are closely linked. Will the oil particles with wear through a strong magnetic field, in the role of strong magnetic field, grits according to certain rules precipitation in iron spectral chip, ferrous spectrum of iron spectral microscope in the qualitative observation or quantitative instruments in the test, according to the working conditions of the judgment bearing.
  Feature: the machine without collapse; Investment low, the effect is good; Can find bearing early fatigue failure; Can do wear mechanism research.
Application: application for lubricating oil bearing fault diagnosis of the grease lubrication for use of the bearing is difficult.


Three, Oil membrane resistance diagnostic technique
  Good lubrication of bearing, because the oil film role, between inner and outer has a lot of resistance. So by measuring the bearing the resistance of the inner and outer, may to the bearing of the abnormal judgment.
Characteristics: the different work conditions can use the same criteria. On the surface spalling and creasing, crack, an diagnosis effect is poor.
  Application: apply to the axis of the exposed the occasion.

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