Dust and dirt cause bearing wear primarily through which mechanism?

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Multiple Choice

Dust and dirt cause bearing wear primarily through which mechanism?

Explanation:
Dust and dirt act as hard abrasive particles that get between bearing surfaces and, under load and motion, grind and plow across raceways and rollers. This mechanical removal of material is abrasive wear, which is why contaminants cause bearing wear primarily through abrasion. Corrosion is chemical attack from moisture, erosion is wear from particle impact in a flow, and fatigue comes from repeated stress cycles causing cracks. The gritty particles directly scrape the surface, leading to pits, roughness, and accelerated wear.

Dust and dirt act as hard abrasive particles that get between bearing surfaces and, under load and motion, grind and plow across raceways and rollers. This mechanical removal of material is abrasive wear, which is why contaminants cause bearing wear primarily through abrasion. Corrosion is chemical attack from moisture, erosion is wear from particle impact in a flow, and fatigue comes from repeated stress cycles causing cracks. The gritty particles directly scrape the surface, leading to pits, roughness, and accelerated wear.

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