What causes grinding noises in a slewing ring bearing?
Grinding noises in slewing ring bearings indicate contaminated lubricant, worn raceways, damaged rolling elements, or insufficient lubrication.
Grinding noises from slewing ring bearings typically result from four primary causes. Contaminated lubricant containing dirt, metal particles, or water creates abrasive conditions that damage bearing surfaces and produce grinding sounds. Worn raceways develop pitting, spalling, or irregular wear patterns that cause rolling elements to bind and scrape against damaged surfaces.
Remember: CLWD: Contamination, Lubrication, Wear, Damage - the four causes of slewing bearing grinding noises.
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