What is crank?

A crank is a mechanical device that is used to convert circular motion into linear motion or vice versa. It typically consists of an arm attached at a right angle to a rotating shaft, allowing for the transfer of motion in a controlled manner.

Crank mechanisms are commonly found in various machines and devices, such as bicycles, engines, compressors, and hand-cranked tools. They are often used to create reciprocating motion, such as in the piston of a engine or the pedal of a bicycle.

Crankshafts are an essential component of internal combustion engines, where they convert the linear motion of the pistons into rotational motion that drives the vehicle. They are typically made of strong, durable materials like steel or cast iron to withstand the stresses and forces exerted on them during operation.

Overall, cranks play a vital role in various mechanical systems by allowing for the efficient conversion of motion between different forms, making them a key component in many everyday devices and machinery.