I am facing a problem of vibration in overhung fan,
Fan is mounted in concrete base , in all point ie motor bearings and fan DE bearing vibration is good in both direction ( axial & radial) but in Fan NDE bearing vibration is high in horizontal direction,
Vibration in fan NDE bearing vibration is 8 mm/s and vertical and axial is less than 2 mm/s
Sir i can't understand what is the problem in fan ...can anybody help me ??