Patent ID: 8764300

Claim:
A bearing having a rotational axis and interposed between a first structure and a second structure, the first and second structures being, each, able to turn around the bearing axis and to turn with respect to each other around the bearing rotational axis, said bearing comprising: first and second bearing races a portion of the second bearing race extending around the first bearing race radially to said rotational axis, and several series of mobile members interposed between the first and second bearing races, annularly around said rotational axis, wherein said several series of mobile members comprise at least three annular series, at least two of said three series are located, with respect to said rotational axis, on different radiuses and are arranged in at least three rows scaled along said rotational axis and wherein the mobile members of an intermediate row of said at least three rows of mobile members scaled along said bearing rotational axis are preloaded in a plane that is perpendicular to said rotational axis.