Double row angular contact ball slewing bearing

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  Double-row ball slewing bearings(no gears)
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  Double-row ball slewing bearings(external gears)
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  Double-row ball slewing bearings(internal gears)

(2) Double row ball slewing bearing with different diameters
Double row ball slewing bearing with different diameters has three races, its steel balls and spacer blocks can be directly discharged into the upper and lower raceway. According to the stress conditions, upper and lower rows of steel balls with different diameters are arranged. This kind of open assembly is very convenient, the bearing angles of upper and lower arc raceway are 90°, making it able to withstand great axial force and tilting moment. When the radial force is more than 0.1 times larger than the axial force, the raceway must be specially designed. Double row ball slewing bearing with different diameters has large axial and radial dimensions and fastened structure. It is especially suitable for tower cranes with medium and above diameter, truck cranes and other loading and unloading machines, as well as port tower cranes, and the situation in which single piece is light, in large quantities and used frequently.