Single row ball slewing bearing are four point contact bearing, it has only one row of steel balls. They could bear axial load, radial load and tilting moment at the same time. One row four point contact ball slewing rings are composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four points. 

There are three types of this kind of single row four points contact ball slewing bearing: without gear bearing (non tooth), external gear bearing (external tooth), and Internal gear bearing (internal tooth).

Single row ball slewing bearing ring is the basic type used most widely in different field.

1. External gear Single row four points ball bearing

 It has the external tooth, The outer diameter range can be from 280 mm to 4726 mm. which are mainly applied in port machinery, mining machinery, welding machinery, construction vehicles, modular vehicles.

the structural feature is as following drawing:

2. Internal gear Single row four points ball bearing

It has the internal tooth, The inner diameter range can be from 222 mm to 4272 mm. which are mainly applied in port machinery, mining machinery, welding machinery, construction vehicles, modular vehicles.

the structural feature is as following drawing:

2. Without gear Single row four points ball bearing

It has the non tooth, The outer diameter range can be from 280 mm to 4226 mm. which are mainly applied in port machinery, mining machinery, welding machinery, construction vehicles, modular vehicles.

the structural feature is as following drawing:

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