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        Double-Row Roller / Ball Combination Slewing Ring

        Double-Row Roller / Ball Combination Slewing Ring

        The LYC double-row roller/ball combination slewing bearing can carry axial load, tilting moment and radial loads at the same time. The top roller mainly carries the axial load and positive tilting moment. The drop ball takes the opposite tilting moment. This is the reason for the loading capacity of the roller/ball combination slewing bearing being larger than the double-row ball slewing bearing, however, the frictional resistance is much larger than the latter. Generally double-row roller/ball combination slewing bearing has advantage of large load carrying capacity and low frictional resistance. The LYC double-row roller/ball combination slewing bearing consists of a inner ring, outer ring, one row balls, one row rollers spacers, sealing device, and other components. In order to accommodate the various working condition at different axial load, tilting moments and axial load, the angle of contact on drop row balls would be adjusted accordingly. The rings structure can be divided into two types, integral type and split type. Generally, the integral type maintains a stronger rigidity. The split type is more convenient to adjust; the two segregate rings are fastened by bolts prior to delivery. The LYC double-row roller/ball combination slewing bearing has cages (or spacing blocks) among the balls. Only when large loading is requested would the full ball type be applied. Loading capacity for full ball type is definitely larger. However, the increased friction generated by this design allows for the balls to be easily scratched. The double row slewing bearing is mainly for the working conditions when carrying an axial load, larger tilting moment and low frication resistanc.This structure provides good performance when fit into an installation when an amount of deformation may be allowed.

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