The DA1210 / 2210 series dry bridge independently developed by XCMG has reached the domestic leading level in terms of technology and reliability. The six-ton wet bridge is used as the technical platform, which has strong bearing capacity and high reliability, has strong working condition adaptability and bearing capacity, and meets the operating requirements of the loader with a weight of 20 to 22 tons. The overall layout of the drive axle is optimized to improve the stress on the axle end of the axle housing and the force on the hub bearings, and improve the reliability and life of the drive axle. The drive axle housing is optimized, and both ends of the axle housing and the supporting shaft are strengthened. The brake adopts split caliper disc brake, which has good maintainability.