i got the problem with housing and bearing . they are all totally damaged .Type of the bearing : spherical roller . At first , i checked with the tool to took the reading with vibration and enveloping acceleration . it look like machinery condition checker pen . Sorry i do not tell the name of the tool . The Recorded reading been collected seem ok . Actually when i opened the housing , the condition of housing seem seriously damaged .
as we seen the vibration at the feet of housing : 6.2 mm/s + Enveloping acc :2.1 gE .