Rolling bearing for blade roots of an aircraft extending along a longitudinal direction between a proximal end and a distal end, the rolling bearing allowing an oscillation of the root about an axis extending along the longitudinal direction relative to a housing, the rolling bearing for blade roots comprising: - a single outer ring having an inner surface and an outer surface opposite to the inner surface, the inner surface of the outer ring having a proximal first outer race and a distal second outer race, the first and second outer races being offset relative to one another along the longitudinal direction, - a first inner ring having an inner surface and an outer surface opposite to the inner surface, the outer surface of the first inner ring having a proximal first inner race and a distal seat, the first inner race and the seat being offset relative to one another along the longitudinal direction, characterized in that the rolling bearing comprises: - a second inner ring having an inner surface and an outer surface opposite to the inner surface, the outer surface of the second inner ring having a distal second inner race, the second inner ring being fixed to the seat and being maintained axially in abutment against the first inner ring, - a single internal space being defined between the inner surface of the outer ring and the outer surface (15, 25) of the first and second inner rings, the single internal space extending between a proximal end where it is closed off by a proximal sealing system between the outer ring and the first inner ring and a distal end where it is closed off by a distal sealing system between the outer ring and the second inner ring, said single internal space containing a lubricant, - a proximal first row of rolling elements having a contact surface mounted in the single internal space, rolling on the proximal first outer and inner races (23, 35) and a distal second row of rolling elements having a contact surface mounted in the single internal space, rolling on the distal second outer and inner races (28, 36), the first and second rows of rolling elements (48, 49) being spaced apart from one another along the longitudinal axis, - the inner surface of the first inner ring comprising a shoulder for assembly to a blade root, - the outer surface of the single outer ring comprising a shoulder for assembly to a housing, and in that at least one of the races and/or the contact surface of the rolling elements of one of the rows of rolling elements is (are) coated by a coating made of a chemical compound of lamellar structure. - a single outer ring having an inner surface and an outer surface opposite to the inner surface, the inner surface of the outer ring having a proximal first outer race and a distal second outer race, the first and second outer races being offset relative to one another along the longitudinal direction, - a first inner ring having an inner surface and an outer surface opposite to the inner surface, the outer surface of the first inner ring having a proximal first inner race and a distal seat, the first inner race and the seat being offset relative to one another along the longitudinal direction, characterized in that the rolling bearing comprises: - a second inner ring having an inner surface and an outer surface opposite to the inner surface, the outer surface of the second inner ring having a distal second inner race, the second inner ring being fixed to the seat and being maintained axially in abutment against the first inner ring, - a single internal space being defined between the inner surface of the outer ring and the outer surface (15, 25) of the first and second inner rings, the single internal space extending between a proximal end where it is closed off by a proximal sealing system between the outer ring and the first inner ring and a distal end where it is closed off by a distal sealing system between the outer ring and the second inner ring, said single internal space containing a lubricant, - a proximal first row of rolling elements having a contact surface mounted in the single internal space, rolling on the proximal first outer and inner races (23, 35) and a distal second row of rolling elements having a contact surface mounted in the single internal space, rolling on the distal second outer and inner races (28, 36), the first and second rows of rolling elements (48, 49) being spaced apart from one another along the longitudinal axis, - the inner surface of the first inner ring comprising a shoulder for assembly to a blade root, - the outer surface of the single outer ring comprising a shoulder for assembly to a housing,