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Maintenance
of Pumps
Maintenance
of Electric
Motor
Maintenance
of Gearbox
Maintenance
of Compressor
situation
A cement manufacturer was faced with repeated cases of bearing loosening on shaft due to high temperature and torque load. This led to costly repairs, hardfacing the shaft which was costly and led to 5 hours of production downtime everytime the bearing spun.
Conventional method used
Shrink Fit
Why does it not work
Shrink fit produces fit on the principle of friction. However there’s only 20-30% metal to metal contact and the rest is gap. This gap allows dynamic loads to loosen the bearing.
loctite solution
Loctite 638
Loctite 638 was applied by maintenance personnel, which filled all the gaps between the bearing and the shaft unitizing the assembly against dynamic rotational loads.
Results
Eliminates the risk of potential damage to the shaft
Eliminates skilled labor costs for welding and machining
Reduces production downtime
