Shot peening increases gear life. The shot–peening process has long been known to improve the fatigue life of bearings and shafts, and the bending strength of gear teeth. … Subjecting a metal part to the shot peening process induces a residual compressive stress in its surface.
What are the Benefits?
Component: Crankshaft gear, Pinions
Advantage: Resistance to fatigue failure, stress corrosion resistance, lubrication