Directing against the problem concerning induced draft fan's burn-out failure in Yunfu Power Plant

possible causes leading to heating of bearings have been analysed from several aspects

such as the quality of bearings

the technology of repair and adjustment

the levelness of bearing pedestal etc.. It is considered after analysis that the main cause resulting in burn-out failure of bearings is the pad clearance of bearing pedestal to be too small at the force-bearing end

making the bearing can't be freely moving

restricting thermal expansion of the rotor

and producing thermal stress. After the pad of bearing pedestal at the said end being repaired through scraping

the abovmentioned problem having been solved.