A chain drive is a mechanical system that uses a chain to transmit power between two or more rotating shafts. It consists of a series of links connected together, which engage with sprockets or gears. This system is commonly found in bicycles, motorcycles, and various machinery, providing a reliable and efficient means of transferring motion. One of the main advantages of a chain drive is its ability to handle high torque and power loads while maintaining a compact design. Unlike belts, chain drives do not slip, ensuring consistent performance. They are also relatively easy to maintain, requiring regular lubrication to prevent wear and tear.