The crankshaft is one of the most crucial components of an engine, responsible for converting the linear motion of pistons into rotational energy that drives the vehicle’s wheels. Positioned at the lower part of the engine block, it works in synchronization with pistons and connecting rods. Crankshafts are generally made from forged steel or cast iron, ensuring durability under high stress, torque, and vibration. Equipped with multiple crankpins, journals, and counterweights, the crankshaft ensures smooth power delivery and engine balance. Engine oil is circulated through built-in passages in the crankshaft to lubricate the bearings, preventing wear and overheating. Depending on the engine type, crankshafts vary in size and configuration, such as inline, V-type, or boxer engines. High-performance and heavy-duty engines often use forged or billet crankshafts due to their superior strength. Operating at speeds ranging from 800 rpm at idle to over 7,000 rpm in performance engines, the crankshaft must withstand enormous torsional forces. A well-balanced crankshaft enhances fuel efficiency, reduces engine vibration, and extends engine life. Failure due to cracks, wear, or bearing damage can lead to severe engine breakdown. Proper lubrication and timely maintenance ensure long-lasting crankshaft performance.