May - Library
May - Library
May - Library
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73<br />
Planned Maintenance Corner<br />
Each issue of the MJ will have a sample Condition Monitoring routine. This issue’s sample is provided from IDCON’s 3 volume series of books<br />
on “Condition Monitoring Standards”. This excellence series contains a useful range of Condition Monitoring / Planned Maintenance routines<br />
and is available from:<br />
IDCON:<br />
info@idcon.com www.idcon.com<br />
or for the Asia Pacific region:<br />
mail@maintenancejournal.com www.maintenancejournal.com<br />
Condition Monitoring Standard - Screw Conveyor<br />
KEY WHAT WHY<br />
Some screw conveyors will have a hanger bearing in the middle. These provide support<br />
for screw conveyors that are comprised of two joined screws. Check that lubricating<br />
water for hanger bearing is working.<br />
Check for cracks in support<br />
Check bearings for noise and vibration (feel, listen). Use the infrared gun to check the<br />
bearing temperature. Inspect bearing hold down bolts and cap bolts (if applicable) for<br />
looseness and corrosion. Check condition of bearing seals, See CMS for bearings for<br />
more detail.<br />
Check hold<br />
down bolts<br />
(Both sides)<br />
Check for Loose or missing bolts<br />
Check cap<br />
bolts<br />
Without lubricating water, the<br />
hanger bearing will quickly wear,<br />
allowing the screw to rub on the<br />
bottom of the conveyor trough.<br />
Noise and vibration can be<br />
caused by loose mounting bolts<br />
or worn/damaged bearings.