Observing black hydraulic oil weeping near your main rotary shaft support or dealing with unexpected bearing temperature spikes signals that your boundary defense has collapsed. Normal rubber seals quickly harden, gloss over, and crack under severe cyclic pressure pulses, allowing abrasive outdoor rock dust to ruin your precision shaft surfaces. Reseal your bearing compartments completely by introducing the heavy-duty RITO 155-0828 lip type seal immediately to stop localized fluid migration.
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