"DC Fan" as a traditional blessing bearing seal bearing improvements to Fu bearing wear-resistant material made of high oil hollow bearings, reducing friction between the bearing and the shaft, bearings blessing also comes with reverse spiral groove and block sump shaft, while the fan is running the oil will form a reverse migration, in order to avoid the loss of oil, and therefore enhance the bearing life. Blessing bearing fan through the use of the above structure, parts and components, so oil and oil retention capacity has increased significantly, and reduces noise.