China angular contact ball bearing is major product of FreeRun, which has their own factory.

In FreeRun, angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.

The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from one raceway to another, and a line perpendicular to the bearing axis.

In FreeRun, angular contact ball bearings include single row angular contact ball bearings, double row angular contact ball bearings, spindle super precision high speed angular contact ball bearings and miniature angular contact ball bearings.

Here are examples of applications in which angular contact ball bearings might be used:

Industrial pumps

Industrial gearboxes

Renewable energy

Compressors

Industrial electric motors & generators

Trucks, trailers and buses

Metals

http://www.freerunbearing.com/products/Ball-Bearing/Angular-Contact-Ball-Bearings/449.html