How to identify whether the raymond mill bearing is failing ?

Posted by lily lily on January 15th, 2018

Bearing is a main vulnerable part of raymond mill. During the operation of raymond mill, the bearing can appear some faults due to stress, assembly or other reasons. In order to reduce the impact on production, we need to judge timely whether the failure occurred raymond bearings.

This approach requires experienced staff reached to identify the voice of bearing. You can hear clearly the bearing voice by attaching hydrophone or listening rod on the outside of machine. Bearing even a slight peeling and other damage also unusual sounds and irregular sound, with sound measuring device will be able to tell the difference.

Bearing vibration is sensitive to the bearing damage such as Peeling, indentation, rust, crack and wear and tear can respect from bearing vibration measurement. The measured values due to the using condition of bearing and sensor installation location is different, therefore, prior to analysis and comparison the criteria of each machine and get judgment standard.

The temperature of bearing can be estimate from temperature of bearing outside, and measure directly the temperature of the bearing outer ring through the oil hole is better. In general, the temperature of bearing raised constantly with operation of raymond mill, and keep stability after 1h~2h. The normal temperature of bearing is different according to the heat capacity, heat dissipating capacity, rotational speed and load of the machine. Using thermal device can monitor the bearing temperature at any time, and it sound an alarm when the temperature exceeds a specified level to prevent burning shaft.