Roller bearing for wind turbines
View Patent ↗A self aligning bearing assembly comprising an inner ring and an outer ring, and two rows of rolling elements of equal length arranged at different contact angles, for supporting a main shaft of a wind turbine.
1. A bearing assembly for supporting a main shaft of a wind turbine, the wind turbine comprising at least a blade rotor, a main shaft and a gearbox, the assembly comprising:
an outer ring;
at least two bearing raceways formed on a radially inner circumferential surface of the outer ring;
an inner ring;
at least two bearing raceways formed on a radially outer circumferential surface of the inner ring;
a first row of rolling elements retained by a first cage;
a second row of rolling elements retained by a second cage;
all of the first row of rolling elements having the same length as all of the second row of rolling elements; and
the second row of rolling elements has a greater contact angle than the first row of rolling elements.
2. The bearing assembly of claim 1 , wherein the first row of rolling elements and the second row of rolling elements are separated by a floating spacer.