1. Having a contact angle

can sustain significant axial loads in one direction together with radial loads

when a radial load is applied, an axial force component is produced

two opposed bearings or a combination of more than two must be used

2. The rigidity of single-row angular contact ball bearings can be increased by preloading

Usage: main spindles of machine tools.

double row angular contact ball bearings correspond in design to two single row angular contact ball bearings but take up less axial space. They can accommodate radial loads as well as axial loads acting in both directions. They provide stiff bearing arrangements and are able to accommodate tilting moments.