Protect Your Bearings: Identifying and Preventing Brinelling

Brinelling is a common bearing failure that occurs when a static load is applied to a ball or roller bearing. The load causes the bearing elements to indent the raceway, creating a permanent deformation. This deformation can lead to premature bearing failure, increased vibration, and noise.

Effects of Brinelling

• Premature bearing failure: Brinelling can reduce the bearing's load-carrying capacity, leading to premature failure.
• Increased vibration: The deformed raceway can cause the bearing to vibrate excessively, which can damage other components in the system.
• Increased noise: The vibration caused by brinelling can also lead to increased noise levels.

Identifying Brinelling

Common Causes of Brinelling

• Improper installation: Installing a bearing with too tight a fit or using incorrect mounting methods can create excessive static load.
• Overloading: Exceeding the bearing's load capacity can cause brinelling.
• Improper lubrication: Insufficient lubrication can lead to brinelling by increasing friction and reducing the protective film between the bearing elements and raceway.
• Static loading: Leaving a bearing under a static load for extended periods can cause brinelling.

Tips to Prevent Brinelling

• Proper installation: Follow the manufacturer's instructions for installing the bearing and use appropriate mounting tools.
• Avoid overloading: Calculate the bearing load carefully and ensure it does not exceed the bearing's capacity.
• Proper lubrication: Use the correct lubricant for the application and follow the manufacturer's recommendations for lubrication frequency and quantity.
• Minimize static loading: If a bearing must be under a static load for extended periods, use a mounting method that reduces the load on the bearing.

Advanced Features

Some advanced features can help prevent brinelling:

• Self-aligning bearings: These bearings allow for misalignment between the shaft and housing, which can reduce static load on the bearing.
• Lubrication systems: Automated lubrication systems can ensure a constant supply of lubricant to the bearing, reducing friction and protecting against brinelling.
• Condition monitoring: Vibration monitoring can detect brinelling early on, allowing for corrective action to be taken before the bearing fails.

Success Stories

• A manufacturing plant reduced brinelling-related bearing failures by 50% by implementing proper lubrication and installation practices.
• A wind turbine operator extended the life of its bearings by over 2 years by using self-aligning bearings to reduce static load.
• A food processing company eliminated brinelling in its conveyor bearings by installing an automated lubrication system.

Conclusion

Brinelling is a preventable bearing failure that can have serious consequences. By following the tips and tricks outlined in this article, you can protect your bearings and extend their service life.