Chain drive is a mechanical power transmission system that uses chains to transmit power from one place to another. Traditional chain transmission devices consist of two or more sprockets and the chain itself. The holes on the chain link are installed on the sprocket teeth.
When the prime mover rotates, the chain wrapped around the shaft sprocket also rotates accordingly. This applies mechanical force to the driven shaft, transmitting mechanical power during this process.
One of the main advantages of chain drive compared to belt drive is its zero slip characteristic, which allows it to maintain a constant speed ratio. There is no lag in power transmission, so it can be used as a timing chain in applications such as internal combustion engines. No slipping also ensures high mechanical efficiency. The only loss of chain transmission is due to friction between the chain link and sprocket.
Compared to gears, chain drives are more versatile in terms of working distance. When the distance between the shafts is greater than the actual distance of the gears, they will come into play. The chain drive is highly efficient at different distances while still maintaining a relatively compact setting. They can be used for short distance applications (such as bicycles) and long distance applications (such as 5-story marine engines). A chain can provide power to multiple shafts simultaneously.