vilebrequins

Crankshafts require BÖHLER steels with exceptional fatigue strength, toughness, and cleanliness. Key quality features include full traceability, controlled heat treatment, advanced surface hardening, and rigorous testing for reliable automotive and racing performance.

Crankshafts in automotive and high-performance racing applications are among the most highly stressed engine components, converting reciprocating piston motion into rotational power under extreme cyclic loading conditions. They are exposed to high torsional forces, bending stresses, vibration, and fluctuating temperatures, requiring materials with exceptional fatigue strength, toughness, and dimensional stability. In racing engines, where higher rotational speeds and power densities are common, additional requirements include superior cleanliness, optimized microstructure, and maximum resistance to crack initiation and propagation.

BÖHLER high-performance steels and alloys are specifically engineered to meet these demanding requirements. Advanced quenched and tempered steels, micro-alloyed grades, and premium forging steels provide an optimized combination of strength, toughness, and fatigue resistance. Produced using advanced melting and refining technologies, BÖHLER materials offer exceptional cleanliness, low inclusion content, and homogeneous microstructures, significantly enhancing endurance under dynamic loading. Key quality features include strict control of chemical composition, certified traceability, and precisely controlled heat treatment processes to achieve consistent mechanical properties throughout the component. Additional processes such as induction hardening and surface strengthening further improve wear and fatigue performance. Comprehensive testing, including fatigue analysis, ultrasonic inspection, mechanical verification, and metallurgical evaluation, ensures reliable operation. BÖHLER materials enable durable, high-performance crankshaft solutions for both production vehicles and the most demanding racing applications.

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