Pitting Surface Fatigue Pitting can occur in a number of wear processes. Pitting is the removal or
displacement of material by a fatigue action to form cavities in a surface. Pitting as a
part of surface fatigue frequently occurs in rolling element bearings, gears, worm wheels,
and cam paths.
Above - Rolling element causing stress and
subsurface cracks.
Left - Subsurface crack
turning into fracture of local area of the metal surface.
