v-belt sheave

The primary function of a fan belt is to transfer rotational power from the engine's crankshaft to various engine accessories. This is done through a series of pulleys that the belt winds around, allowing multiple components to operate simultaneously. In modern vehicles, the serpentine belt design has largely replaced traditional V-belts due to its ability to drive multiple accessories with a single belt, which improves efficiency and reduces the weight of the engine compartment.


...

Timing belts are typically made of high-quality rubber reinforced with fiber and other materials that allow them to withstand high temperatures and wear. Timing chains, on the other hand, are more robust, making them advantageous for high-performance vehicles that demand durability under extreme conditions. Each system has its own pros and cons. Timing belts are generally quieter and lighter but need regular replacement, typically every 60,000 to 100,000 miles. Timing chains, while more robust and capable of lasting longer, can sometimes generate more noise and require more complex replacement procedures when worn.


...