Technical Characteristics And Application Of Bearing Faults

In the process of using bearings on equipment, there will often be some failures, which is inevitable.What is important is that if you know what type of bearing failure is, appropriate measures can be taken to actively repair it. BMB bears learned from experience that there are mainly six bearing failure technologies, and analyzed the characteristics and application of these six bearing failure technologies.

1. Vibration diagnosis technology
As long as the working surface of bearing components appears fatigue spalling, indentation or local corrosion, periodic pulse signals will appear in the operation of the bearing.This periodic signal can be received by a sensor installed on the bearing seat (speed type or acceleration type), and the fault of the bearing can be diagnosed by analyzing the vibration signal.
Features: Vibration diagnosis technology is widely used;On-line monitoring can be realized;Diagnosis is quick, the theory of diagnosis is mature.
Application: especially suitable for bearing fault monitoring in rotating machinery.

2. Ferrography diagnostic technology
Bearing wear particles are closely related to their working conditions.The lubricating oil with wear particles is passed through the -strong magnetic field. Under the action of the strong magnetic field, the wear particles are deposited on the ferrography plate according to the -fixed law. The ferrography plate can be qualitatively observed on the ferrography microscope or tested on the quantitative instrument to judge the working condition of the bearing.
Features: No need to disassemble the machine;Low investment, good effect;Early fatigue failure of bearings can be found;The wear mechanism can be studied.
Application: It is suitable for fault diagnosis of bearings lubricated with leap oil. It is more difficult for bearings lubricated with leap oil.
3. Oil film resistance diagnosis technology
Leap smooth good bearings, because of the role of oil film, there is a great resistance between the inner and outer rings.Therefore, by measuring the resistance of the inner and outer rings of the bearing, the abnormal judgment of the bearing can be made.
Features: the same evaluation criteria can be used for different working conditions.The diagnosis effect of surface spalling, indentation and crack is poor.
Scope of application: suitable for the occasion of exposed axis of rotation..
4. Optical fiber monitoring and diagnosis technology
Fiber optic monitoring is a kind of diagnostic technology which directly extracts signals from the surface of bearing rings.The displacement sensor made of optical fiber bundle consists of transmitting fiber bundle and receiving fiber bundle.The light is reflected from the transmitting optical fiber bundle through the gap between the sensor end face and the bearing ring surface, and is received by the receiving optical fiber bundle. The light is converted into electrical signals by the photoelectric elements, and the bearing condition can be evaluated by analyzing and processing the electrical signals.
Features: High sensitivity of optical fiber displacement sensor;The signal is extracted directly from the bearing surface, which improves the signal-to-noise ratio.It can directly reflect the manufacturing quality, surface wear degree, load, leap slip and clearance of rolling bearings.
Application: Suitable for machines where sensors can be installed in bearing pedestals.
Supplier:BMB bearings
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