Description

The double-row ball slewing bearing has three ***** steel balls and the spacers may be directly arranged into the upper and lower ***** rows of stell balls with different diameters are fitted according to the force. Such open mode fitting features extraordinary ***** load angles of both upper and lower races are *0 degrees, which enable the bearing to bear large axial force and the tipping moment.When the radial force is larger than 1/*0 of the axial force the races should be newly designed.As the axle and the dimension of the double-row ball slewing bearing are rather large, the bearing conatruction is firm. It is expecially suitable for tower cranes which require working radius over medium range, auto-mobile cranes and unloading machines.