India’s Bharat Forge Ltd. (Kalyani Group), a manufacturer of heavy-duty diesel crankshafts for commercial vehicles, rolled out its one millionth finish-machined crankshaft in mid-May. Bharat Forge, a long-standing supplier to Daimler AG, produces crankshafts that power Daimler’s heavy-duty engines. The company supplies machined crankshafts for the 13L and 15L engine platforms to Detroit Diesel in the U.S. Additionally, Bharat Forge shares the 13L platform with Daimler’s Mannheim plant in Germany. 

Kobe Steel Ltd. received special approval from Nippon Kaiji Kyokai (also known as ClassNK or NK) to use 1.05 as the K-factor for calculating the design fatigue strength of crank throws.

As the critical component that translates reciprocating into rotational motion, the crankshaft is subjected to significant stresses and loads.