Two-Wheel bearings volleyball circle formed by the three blocks. From top to bottom seat are installed directly Ball and isolated quickly. Two rows of steel balls have different diameters to adapt to different loads. This feature open design is convenient. From top to bottom seat load Kok were 90, to provide greater thrust bearings and tendencies of torque. When radial force axial force of more than 1 / 10, bearing seat on the need to re-design. When the axle bearings and double the size of volleyball great, such a solid bearing structure, the tower crane, and so on for more than the distance from the radius of the machinery, mobile cranes.
