Lubrication systems in machinery serve what purpose?

• A. Transfer heat away from components
• B. Prevent wear and tear on mechanical components
• C. Increase friction between moving parts
• D. Seal gaps in enclosures

Answer: (B)

Lubrication systems minimize friction between moving parts by creating a film that keeps surfaces apart. This separates metal surfaces, preventing metal-to-metal contact that causes wear over time. By reducing wear, components last longer, maintain proper tolerances, and run more reliably. Lubricants also help carry away heat and remove contaminants and can aid in sealing small gaps, but these are secondary benefits—the main purpose is wear prevention through reduced friction.