Slewing ring

Single-row four-point contact ball turntable bearing is composed of four parts: inner ring, outer ring, steel ball and isolation block. It is compact in structure and light in weight. The steel ball is in four-point contact with the arc raceway, and can bear axial force and radial force at the same time. Rotary conveyors, welding operators, small and medium-sized cranes, excavators and other construction machinery can be selected.

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Description

The double-volleyball type turntable bearing has three races, and the steel balls and isolation blocks can be directly discharged into the upper and lower raceways. According to the stress conditions, the upper and lower rows of steel balls with different diameters are arranged. This open-type assembly is very convenient. The bearing angle of the upper and lower arc raceways is 90 °, which can withstand large axial force and overturning moment. When the radial force is greater than 0.1 times the axial force, the raceway must be specially designed. The axial and radial dimensions of the double-row reducer ball slewing bearing are relatively large and the structure is tight. It is especially suitable for tower cranes, truck cranes and other loading and unloading machinery requiring medium or above diameter.

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