What does "lubricant film strength" refer to?

Lubricant film strength refers to the ability of a lubricant to maintain a protective layer between surfaces under load. This concept is crucial in machinery lubrication, as it directly relates to the lubricant's effectiveness in reducing wear and tear on moving parts. When surfaces come into contact under pressure or load, the lubricant forms a thin film that separates these surfaces, preventing metal-to-metal contact, which could cause damage and premature failure.

In applications with high loads, film strength is even more critical, as a stronger film can carry more load and provide improved protection. Effective film strength is influenced by several factors, including the lubricant's viscosity, its additives, and the operating temperature. This characteristic is essential for ensuring machinery operates smoothly and efficiently over time.