Angular contact ball bearings are particularly suitable for carrying combined (axial and radial) loads. Sometimes, they also can carry pure axial load and operate in higher speed. Under radial load, axial component force will be produced which must be counteracted. So the bearings are normally adjust against a second bearing. In many applications, angular contact ball bearings in pairs or muti-arrangement should be used. The axial load carrying capacity of angular contact ball bearings increase with the increase of contact angle.