Slewing Bearing for Excavating Machine

The slewing bearing used by the excavator is a single-row ball slewing bearing, and the teeth are quenched. The main function is to support the upper cab and the mechanical arm and other mechanisms, and to control the rotation of the cab and the mechanical arm. The motor or reducer drives the pinion to rotate, and the pinion drives the slewing bearing to rotate, so that the upper mechanism connected to it rotates accordingly. The slewing bearing used in the excavator is required to carry a large axial force, overturning moment and gear circumferential force, and has higher requirements on the clearance, installation size and material of the slewing bearing.