The slewing bearing is mainly composed of an outer ring, an inner ring, rolling elements, a sealing device and a lubricating device. It is a support bearing that can bear axial load, radial load and overturning load at the same time. Features such as strong carrying capacity. Slewing bearing is a new type of machine component that has gradually developed with the development of machinery industry in the world in the past 50 years. It has gradually extended from tower cranes, truck cranes, and excavators to transportation machinery and metallurgical machinery. , food processing machinery, military equipment (tanks, anti-aircraft guns, radar, rocket launch pads), medical machinery, ladders, windmills, robots, rotating entertainment facilities and other fields.

The development of slewing bearing products in China started relatively late, that is, it did not have a certain scale until the late 1970s and early 1980s. At first, the single-row four-point contact ball slewing bearing was the most used in the market, and the raceway diameter was between Φ500~Φ1500mm, accounting for most of them; now, with the development of construction machinery, special vehicles and industrial robots With the development of slewing bearing products, while the demand for slewing bearing products is increasing day by day, higher requirements are put forward for the quality and innovation of products.

Compare to the previous, now the slewing bearing have many types, Like:

1. Single row four contact ball structure
2. Single row cross roller structure
3. Double row different ball and Double row ball structure
4. Three row roller structure
5. Ball & Roller combination

And now the precision is high, we also can grinding the teeth to catch the precision grade 6.

For the raw material, we not only with generally material 50MN, 42CRMO, now we can also with C45, S48C, or other country’s grade, even stainless steel 2CR13.

If you need anti-corrosion, we can do surface treatment such as painting, galvanizing, thermal spraying zinc, nickel plating, etc.

For now, the domestic slewing bearing has been developing continuously and moving towards the high-end market.