7 Common Reasons for Bearing Failure & How to Avoid Them

More than 70% of bearing failures are caused by improper use, not quality problems. Understanding these reasons can greatly extend bearing life and reduce equipment downtime.

1. Incorrect Selection

Choosing the wrong type, clearance, or sealing will lead to early failure. Always select based on load, speed, temperature, and environment.

2. Improper Installation

Knocking the bearing directly, poor concentricity, or unsuitable fit will cause damage. Use heating or press fitting for installation.

3. Lubrication Problems

Too much or too little grease, wrong lubricant type, or polluted lubrication are the top causes of overheating and noise.

4. Contamination & Dust

Dust, water, and metal chips will damage the raceway. Sealed bearings are strongly recommended for harsh environments.

5. Misalignment & Shaft Deformation

Non-concentric shafts cause eccentric force and accelerate wear. Spherical roller bearings can solve this problem.

6. Overload & Impact

Overload will cause fatigue spalling. Choose bearings with sufficient safety factor.

7. Poor Storage

Bearings should be kept dry, clean, and away from moisture to avoid rust.

How CNXY Helps You

We provide professional technical support from selection to installation and maintenance. Our bearings are strictly tested to ensure stable performance.

Learn more at www.cnxybearing.com.