Patent ID: 7990006

Claim:
A generator for a wind turbine comprising: a rotor arrangement comprising: a rotor element, a first cylinder barrel or a first sleeve enclosing at least one rotor element, and a first bearing surface, and a stator arrangement comprising: a stator element, a second cylinder barrel or a second sleeve covering a stator element, and a second bearing surface, and an air gap in between the rotor arrangement and the stator arrangement; and a lubricant, wherein the rotor element is provided for the production of energy and has a first outer cylinder barrel shaped surface in relation to a center axis of the generator which acts as the first bearing surface of the rotor arrangement, wherein the stator element is provided for the production of energy and has a second outer cylinder barrel shaped surface in relation to the center axis of the generator which acts as the second bearing surface of the stator arrangement, wherein the first bearing surface and the second bearing surface are arranged oppositely from each other with the air gap in between which is formed substantially cylinder barrel shaped, and wherein the air gap includes the lubricant.