Grease change intervals determine when a lubricating grease must be completely replaced. Influencing factors include temperature, speed/size factor, load, ambient media, vibrations and sealing concept. High temperatures, moisture or dirt shorten the service life due to oxidation, oil separation and thickener degradation. Practical rules combine OEM (Original Equipment Manufacturer) specifications with empirical values and condition data.
A planned change prevents grease hardening, insufficient lubrication and bearing failure. Important: distinguish between relubrication (regular volume replenishment) and complete replacement, take drainage/flushing into account and use compatible greases to avoid thickener conflicts.
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