What function do bearings primarily serve in an engine?

Bearings primarily serve the function of supporting moving parts within an engine. They provide a low-friction interface that allows rotating or moving components, such as crankshafts or camshafts, to move smoothly and efficiently. By supporting these parts, bearings help to maintain proper alignment and positioning, reducing wear and tear caused by friction and vibration. This support is crucial for the overall performance and longevity of the engine, as it ensures that the moving parts can operate within their designed specifications without excessive stress or damage.

Supporting moving parts also contributes to maintaining the stability of the engine assembly as a whole, which is vital for the consistent operation of closely interacting components. This role is particularly important in high-performance engines where precision and efficiency are critical.