Bearing Failure: 4 Most Common Causes and How to Prevent Them

M&M Intercom, d.o.o.: Bearing Failure: 4 Most Common Causes and How to Prevent Them

Why Do Bearings Fail?

Insufficient lubrication, improper selection, and unprofessional installation are the most common causes of bearing failure. Choosing the right bearings can significantly extend the lifespan of machines and prevent unwanted failures.

How to Choose the Right Bearing for Your Machine?

Prior to installation, the appropriate bearing must be carefully selected for the specific application. The selection of ball or roller bearings depends on:

• Rotational speed (RPM),
• Operating conditions (temperature, humidity, dust, etc.),
• Expected lifespan,
• Direction and magnitude of the load.

Ball bearings excel in high-speed applications, while roller bearings are preferred for heavier loads.

Bearing Failure Analysis for Effective Maintenance

Investigating premature bearing failures is crucial to identify their root cause. Analysis results inform preventative measures that extend bearing life and minimise production downtime.

Insufficient lubrication and overheating, often caused by abnormal operating conditions, are common failure modes. Addressing these issues promptly significantly improves bearing performance and longevity.

Top Reasons Bearings Fail:

• Insufficient lubrication – The leading cause of approximately one-third of all failures.
• Material fatigue – Resulting from overloading, imbalance, and misalignment.
• Incorrect installation – Accounts for up to 15% of failures.
• Contamination – The ingress of water, dust, or metal particles shortens bearing lifespan.

Key Strategies for Preventing Bearing Failures

Maximising bearing lifespan requires regular maintenance, preventive diagnostics, and proper installation. For companies with limited resources, outsourcing professional maintenance is recommended to minimise downtime and maximise machine availability.

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Source: M&M Intercom, d.o.o.