1、Choose high-quality bearings, like the double ball bearing in the double ball bearing exhaust fan because of its higher load capacity and durability.

2、Check the fan regularly to ensure that there is sufficient lubricating oil and no foreign matter.

3.Pay attention to the ambient temperature of the fan to avoid overheating damage to the bearing, especially high rpm exhaust fans such as high speed exhaust fans are more sensitive to temperature.

4. For fans with higher frequency of use, consider using bldc exhaust fans, because brushless motors do not rely on traditional brush contact with bearings, reducing mechanical wear.