A chain drive is a mechanical system that transmits power between two rotating shafts using a chain. It consists of a series of links that connect two sprockets, allowing for efficient movement and torque transfer. Chain drives are commonly used in various applications, including bicycles, motorcycles, and industrial machinery. One of the main advantages of a chain drive is its ability to handle high loads while maintaining a compact design. Unlike belts, chain drives do not slip, providing precise control over speed and movement. This makes them ideal for applications where reliability and efficiency are crucial, such as in automotive and manufacturing industries.