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Over 99% of rolling bearings perform as expected throughout their service life. However, many failures—such as rust, corrosion, pitting, and misalignment—are avoidable. To protect these critical components from damage, it's essential to apply a thin layer of lubrication that keeps the rolling elements and raceways separated.
Engineers often choose grease for its ease of use and sealing properties, while oil is preferred in high-speed or high-temperature environments due to its superior cooling capabilities. Both options serve different purposes and should be selected based on the specific requirements of the system.
Proper lubrication offers several benefits:
• Reduces friction and wear caused by direct metal-to-metal contact
• Helps dissipate heat generated during operation
• Extends the bearing’s overall lifespan
• Prevents rust and corrosion
• Keeps contaminants like dirt and water away from the moving parts
Just like bearings have a predicted service life, so does the lubricant used. Regular reapplication is crucial to maintain optimal performance. When done correctly, proper lubrication significantly improves reliability and ensures longer operational life.
However, there are common mistakes to avoid when it comes to lubrication:
• Choosing the wrong type of lubricant—grease and oil each have unique advantages and limitations
• Using excessive or insufficient amounts—too much can increase temperature, while too little leads to metal contact
• Mixing grease and oil—these two should never be combined
• Contaminating the lubricant with foreign particles or moisture—this can compromise its protective function
At Emerson Bearing, we’ve been dedicated to bearings for over five decades. Whether you need a rare bearing or help selecting the right lubricant for your system, our team of experts will assess your needs and provide a tailored recommendation.
For more insights into the importance of rolling bearings and how to maintain them effectively, download our eBook "The Art of Precision Bearings." It’s a valuable resource for engineers and maintenance professionals looking to optimize performance and extend equipment life.
The Importance of Proper Grease and Lubrication
Rolling bearings are precision components designed to support loads with minimal resistance, typically using balls or rollers. These essential mechanical parts are known for their durability and long service life, which can be measured in terms of operating time or the number of rotations, depending on the application.