What is the purpose of lubrication using grease or oil?

Lubrication using grease or oil serves multiple vital purposes, with the primary function being to transfer heat and reduce friction between moving parts. When machinery operates, components like bearings and gears generate friction due to their movement. This friction can lead to increased wear and tear, overheating, and even mechanical failure. By applying appropriate lubrication, the heat generated from friction is dissipated, which helps maintain optimal operating temperatures and enhances the efficiency of the equipment.

Moreover, the lubrication creates a film that separates the surfaces of moving parts, thus significantly reducing direct contact and minimizing friction. This not only helps in cooling but also contributes to the prevention of wear, as the reduced friction lowers the chances of surface damage. While other options might touch upon aspects of lubrication, the comprehensive function of transferring heat and reducing friction encompasses the most critical roles that lubrication plays in equipment maintenance.