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 features a series of offset sections called crankpins, which connect to the pistons via connecting rods. This design allows the engine to produce power efficiently. In addition to its role in engines, the crankshaft also helps balance the engine's weight and reduce vibrations. It is often found in various types of machinery, including automobiles, motorcycles, and industrial equipment, making it an essential part of many mechanical systems.