Which bearings are prioritized for oil supply in an engine?

The main bearings are prioritized for oil supply in an engine because they support the engine's crankshaft and are critical in maintaining its alignment and stability during operation. These bearings endure significant loads and friction as they allow the crankshaft to rotate smoothly.

Adequate lubrication of the main bearings is vital to reduce wear and overheating, which can lead to catastrophic engine failure. Since the crankshaft is integral to the engine’s performance, ensuring that the main bearings receive a consistent and adequate flow of oil helps to maintain proper function and longevity of the entire engine.

While other bearings such as camshaft, rod, and oil pump bearings also require lubrication for proper function, the main bearings often take precedence because they play a central role in the overall operation and durability of the engine. Prioritizing oil supply to the main bearings ensures that the most critical components receive the essential lubrication they need to operate efficiently.