Single row four point contact ball slewing bearings consist of a one-piece inner and outer ring and a set of spacers, protected by integral seals. The balls are inserted into the bearings via a hole in one of the two rings and are separated by polyamide spacers. After loading the ball set and spacers, the hole is closed with a plug that conforms to the race-way contour.

 The single row four-point contact ball slewing bearings is divided into three series:

1.        Light series four-point contact ball slewing bearings

2.        Medium size four-point contact ball slewing bearings

3.        Customized four-point contact ball slewing bearings

Crossed roller slewing bearing without gear RKS.921155203001 

Advantage: RKS.061.20.0414 four point contact slewing bearing with external gear teeth, it features compact in design, light in weight, high precision and small fitting clearance. As the rollers are 1:1cross arranged, it is suitable for high precision mounting and capable to bear axial force, resultant moment and considerable large radial force. The four point contact slewing bearing find widely application for transporting, engineering machines as well as for military products.