A crankshaft is a crucial component in internal combustion engines, converting the linear motion of pistons into rotational motion. It is typically made of steel or iron and consists of a long shaft with several offset sections called crankpins. As the pistons move up and down, the crankshaft rotates, ultimately powering the vehicle's wheels. In addition to its role in engines, the crankshaft is also found in other machinery, such as compressors and pumps. Proper balancing and alignment of the crankshaft are essential for smooth engine operation, as imbalances can lead to vibrations and increased wear on engine components.