Lubrication is an essential aspect of maintaining the smooth operation and longevity of machinery and equipment. However, numerous myths and misconceptions surrounding lubricants lead to poor maintenance practices and costly mistakes. Understanding the reality behind these myths helps engineers, maintenance managers, and equipment operators make better decisions — and avoid preventable failures.
One of the most prevalent myths is that using excessive amounts of lubricant provides better protection. Over-lubrication leads to several problems: increased operating temperatures as components churn through excess lubricant, energy losses, accelerated seal wear from excess pressure, and grease contamination of surrounding components.
The truth: The right quantity of lubricant is critical for effective lubrication. Follow the manufacturer's recommendations and consider equipment type, operating conditions, and load requirements. For greases particularly, correct fill quantity is as important as correct grade selection.
Some believe that mixing different lubricants has no adverse effects. Different lubricants may have incompatible additives and base oils, leading to chemical reactions that reduce lubrication performance. Mixing lubricants can compromise their protective properties and potentially damage machinery — particularly when mixing different grease thickener types.
The truth: Avoid mixing lubricants unless specifically confirmed compatible. Stick to a single lubricant type or consult with a technical expert to confirm compatibility when transitioning between products. When in doubt, flush and clean before refilling with a new product.
The misconception that lubricants have an indefinite lifespan leads to the most common and costly maintenance failure in industry. Lubricants degrade over time due to oxidation, contamination, additive depletion, and shear degradation. Using old or degraded lubricants results in reduced protection and accelerated equipment wear.
The truth: Lubricants have a finite service life and need replacement at appropriate intervals. Follow the OEM's recommendations for drain intervals based on operating conditions and usage patterns. Oil analysis can help determine the optimal timing for replacement rather than relying on the calendar alone.
Different equipment requires lubricants with specific properties tailored to their operating conditions. Using the wrong lubricant — even one that appears similar — results in inadequate lubrication, increased friction, and potential equipment failure. Viscosity, temperature range, load-bearing capacity, and compatibility with seals and materials all differ between products.
The truth: Selecting the right lubricant for your specific equipment and application is a technical decision. Refer to the manufacturer's recommendations, consider operating conditions, and consult with lubrication specialists when in doubt. The consequences of using the wrong product can be significantly more expensive than the cost of specification advice.
While lubricants play a vital role in reducing friction and wear, they do not eliminate the need for regular equipment inspection and maintenance. Neglecting maintenance leads to lubricant contamination, reduced effectiveness, and premature equipment failure — even if the lubricant itself is correctly specified.
The truth: Lubricants are part of a comprehensive maintenance strategy, not a substitute for it. Regular equipment inspection, filter replacement, seal checks, and contamination monitoring are all necessary to ensure optimal lubrication performance and equipment reliability. Lubricant selection and maintenance practice are inseparable.
Have questions about lubricant selection for your application or industry? Banesto’s technical team is available to help.
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