First, rolling bearing early evaluation

1  water pump motor diagnosis

Our factory 6# pump motor maintenance in the new bearing, after putting motor hot (around 78), suspected bearing quality, ready to repair. According to the test and analysis of spectrum, for vibration velocity is very small, can determine bearing no quality problem, just bearing clearance small,hot is temporary phenomenon, can use. By long-term operation, confirmed that running bearings is good, have no fever phenomenon.

2, boiler ball mill motor diagnosis

3, 5 # boiler replacement motor repair ball mill bearing, vibration to exceed bid, and a different sound, the test paper that, bearing fault frequency and noise caused by the vibration of the harmonic speed has more than standard, belongs to the bearing quality is poor. Replace qualified bearings equipment operation after the normal.

Second, degradation period detection

When the vibration velocity, more than 3 MMS, such as spectrum analysis demonstrate conformity to the rolling bearing fault characteristics, the need to strengthen the monitoring of bearing, for timely treatment to avoid the failure to upgrade.

From see spectrum diagrams, bearing fault frequency of the noise and its harmonics are relatively obvious, the degradation of bearing, need to strengthen the monitoring, the timing of treatment.

As the vibration velocity more than 7 MMS (15 ~ 300 kW of rotating equipment) to change in time bearing, so as to avoid the equipment accidents.

 
If you need an accurate diagnosis of the bearing damage, can use such as vibration of the 904 expert analysis software, put forward specific diagnosis report.



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