Large-scale special-purpose pivotal bearing used for bearing large overturning torque

The invention discloses a large-scale special-purpose pivotal bearing used for bearing large overturning torque. The pivotal bearing comprises a bearing outer ring, a bearing inner ring and a ball, the ball is fixed between the bearing outer ring and the bearing inner ring through a retainer, the thrust devices arranged by corresponding to the ball are distributed on the bearing outer ring, and the end part of the thrust device supports to the ball. The large-scale special-purpose pivotal bearing can symmetrically separate the bearing outer ring to an upper part and a lower part along center, from an assembling angle, the bearing ball and the retainer are convenient for assembling in an outer ring raceway of the bearing, the special-purpose bearing bears the effects of a traditional transverse plane bearing and a radial bearing, the support transverse plane is suffered to with revolution motion by the effect of the axial direction load and radial overturning torque, so that the heavy hoisting and rotation tas