Ball bearings are a type of bearing that uses balls to maintain the separation between the different moving parts of the bearing. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. Ball bearings will use seals to contain lubrication and keep out particles to extend the operating life. Precision ball bearings are used in applications that require high precision. These are found in a variety of markets, including automation, aerospace, robotics, health and machine tools.