The chain converts rotational power to pulling power, or pulling power to rotational power, by engaging with the sprocket.
The sprocket looks like a gear but differs in three important ways:
- Sprockets have many engaging teeth; gears usually have only one or two.
- The teeth of a gear touch and slip against each other; there is basically no slippage in a sprocket.
- The shape of the teeth are different in gears and sprockets.
Figure 1.7 Types of Sprockets