Sprockets are simple thin mechanical wheels with teeth used to rotate and engage links in a chain or belt. Sprockets have two rotating cutter blades working in tandem to produce rotational force.
Sprockets are typically made from steel and are available in various sizes and shapes. A typical sprocket consists of a central shaft, which rotates around its axis via an external or internal gearbox. A chain or belt connects two sprockets, both having a rotating shaft where one sprocket is considered the 'driver' and the other the 'driven.' As the shafts rotate at different speeds, the connected sprockets become responsible for transmitting power, changing the torque or controlling the speed of the mechanical system.