Maintenance Technician Practice Test 2026 - Free Maintenance Technician Practice Questions and Prep Guide

The purpose of a lubrication system in machinery is fundamentally to reduce friction and wear between moving parts. When components within a machine move against each other, there is potential for friction to generate heat and wear those surfaces down over time. A proper lubrication system introduces a film of lubricant, such as oil or grease, between these moving parts, which minimizes direct metal-to-metal contact. This reduction in friction not only helps to prolong the life of the machinery by decreasing wear but also improves efficiency, as less energy is consumed in overcoming frictional resistance.

Additionally, while a lubrication system can contribute to cooling and removing contaminants, its primary and most critical role is to ensure smooth operation by minimizing wear. This is why the correct answer emphasizes the primary function of lubrication as a means of reducing friction.