Four Point Contact Ball Bearing 

Four point contact ball bearing
Four-point contact ball bearingsare a type of single-row angular contact bearing. They can be subjected to radial and axial load in any direction or a combination of radial and axial load.
This type of bearing is mainly used for an axial load and is a separable bearing. One four-point ball bearing can at times be used to replace two angular contact ball bearings used in pairs.