The single-row cross roller slewing ring is composed of two seat rings. It features compact In design, light in weight, high precision and small fitting clearance As the rollers are 1: 1 cross arrange, it is suitable for high precision mounting and Capable to bear axial force, resultant moment and considerable large radial force The single-row crossed roller slewing rings are widely used for histing, transporting Engineering machinery as well as for military products. Inner with the plastic after wooden box.