Patent ID: 7682083

Claim:
A bearing system comprising: a bearing with a hole defined therein and an inner surface surrounding the hole; a shaft with an outer surface, the shaft extending in the hole of the bearing with a space formed between the inner surface of the bearing and the outer surface of the shaft; lubricant being filled in the space; and a layer of nano-structured coating being coated on one of the inner surface of the bearing and the outer surface of the shaft for adsorbing the lubricant to form a layer of lubricant film between the coating and the other of the inner surface of the bearing and the outer surface of the shaft; wherein the lubricant is made of polymer material with a hydrophilic functional group and a hydropholic functional group, the hydrophilic functional group being adsorbed adhere to the coating and the hydrophobic functional group being repulsed away from the coating; and wherein the polymer material is perfluorinated polyether.