Definition: Erosion damage is the removal of surface material due to the repeated impact of small solid particles.

Identification: Erosion creates smooth craters.

Discussion: Erosion is caused by relative motion between a gear tooth surface and a fluid containing hard particles.

Prevention: Remove abrasives from lubricant.

More Information: For more information on erosion, please submit a question to our “Ask an Expert” link. For assistance with a gearbox failure analysis, please visit our “Consulting” page.