Difference Cooling Fan Manufacturer fan life

1, "Cooling Fan Manufacturer" general exchange ball fan lifespan of about 50,000 hours, products from different manufacturers will have to distinguish between:
2 "Cooling Fan Manufacturer", the general exchange of oil for 25,000 hours lifetime fan, because of its repeated rotation bearing wear make life cut short, high-quality manufacturer of life will be to 30,000 -3.5 ten thousand hours;
"Cooling Fan Manufacturer" devices require clean, at least once a month. Air inlet net should be kept clean to prevent blocking airflow, you can clean with a soft brush or compressed air to clean.