Frequently Asked Questions

Deep rolling is an automotive manufacturing technology that utilizes high-pressure rolling forces concentrated in the undercuts (or fillet areas) of a crankshaft. This prevents the rough machining processes from weakening the crankshaft by inducing internal machining stresses. Without fillet rolling, these stresses reduce the fatigue strength of the crankshaft, thereby reducing its lifetime.

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Lonero Engineering was established in 1949, originally started as a one-man jig grinding shop. The company was officially founded shortly thereafter in 1951, serving the greater Midwest with precision metal grinding services from Detroit, Michigan.

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