Thin-walled rings bearing deep groove ball bearings can be (C), four point contact bearings (X), angular contact ball bearings (E). In different series are available in all of these designs. Series depends on the size of the cross section. Match ball and series. 

 

Deep groove ball bearings can support axial loads in both directions as well as radial loads. 

 

Four point contact bearings can support axial loads in both directions as well as radial loads; therefore they are in contact with the double row angular ball bearings same operation mode. 

 

Angular contact ball bearings can match the optimal number of balls and the contact angle of 30 °. They support radial loads than deep groove ball bearings or four point contact bearing higher, and can support axial loads from the same direction. For special needs, angular contact ball bearings bearings can also be provided as a match. Thus, rigidity and load carrying capacity of these combinations than single-bearing products to be much higher.