Which lubricant requirement reduces wear due to motion?

• A. Reduce Friction
• B. Seal
• C. Cool
• D. Prevent Corrosion

Answer: (A)

Reducing friction between moving parts is what directly decreases wear during motion. A lubricant forms a separating film that keeps the surfaces apart, lowering the contact stress and the frictional force as they slide past each other. With less friction, there’s less abrasive interaction, fewer micro-welds, and less heat generated at the contact, all of which slows the wear rate. While cooling, sealing, and corrosion protection support overall lubricant performance, the specific action that most directly minimizes wear from motion is reducing friction through proper lubrication.