Discussion
A grease of drop point 95 \( ^\circ \)C is offered for a bearing whose housing reaches 110 \( ^\circ \)C. The grease will
Answer: A
Correct answer: soften and run out of the bearing
The drop point is the temperature at which the thickener structure collapses and the grease flows, so a housing at 110 degrees will take a 95 degree grease past that point. The grease will run out and the bearing will be left with no lubricant at all. Service temperature must be well below the drop point, not merely near it.
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